HIG H LIGHTS of agricultural research VOL. 16, NO. 1 SPRING 1969 Agricultural Experiment Station AUBURN UNIVERSITY -r DIRECTOR'S COMMENTS (II x i litii \XI I'i I. I t x I I l 1 [ u t I \\[" K I1 liii xxiiil i\\ii ii i ll iii x l \111 .~ V lii .1 a\\iiii it i I ( x 1it x l i ix I ixiii kii \ix t-, fit tIc Iiii, ( ,,; 1 I w\i x I I, till it x c i. " I k11! i 1 xt" i i iii I111( Il lil ii'ij i I ixt I tll. Ii lii t111 11111 1 Iw o le Iic o o la lil x of i h tl l, 1111 I\ xt xi diol i d Imi it I, tw ii -c-l Iii .1411 u i a ei o- of l i l ex i il lii ii l tll fill w 1 x~iIi ii ii tl, ii li i1111d ) tiii ii lo cixt l didii c liti iti lix lix \ o ixo Iix \lxi ll l/xliIc il i l it\ xx l xIiix ( dilliio 11 \\ i ll x till e xx i c liii it i - ofi xiu 11 Fii l .il S ith i I it.l of pl i 1 ,1 _,1 1 1 ~ iuiix l \x l iiji I i , 11 SI) [x i to i i )u ( l tha tihe t1)il , lx Ii i lt c l ( -i ll i t. hIo tl xx I Ii Ii ofi ii ite x xx [ i ii ie loti Iit l xii T ) I]i ! ,I I it, 'I'l fi \tI i I x Ii i li t I , Iii 11 1 i .x itm x l xxii i II lixc iiid "ilrdl I, ix II -ii cit \ i ll 1 x1 x 11 it lIi ilxit i o le Ill x. (,-o Ih p o i i 1 1 4, I i lii x( )II c ) I I Iof1 1 i )I I I il I I of lii i III lii I ool it Iii ,xIx k ii ix[ l tii I i xul Iiii c 1, ii xij ,i i ' i I il 1 i I i lit,;I I I i I )i XX Ii t, ieIf l o of1 iiif i'ihi i 1 iii ii i ti 4 l iilp~ lcl iicl~ rfolo l~ o i t i ii le ii' iiiit t xxi i \,iliii ii iii 1i 1 111)111 i l I xx l ll xl ii i hilt' I )Ie~ , a' fkI(., d c r i _ ' ' (I)-'dec fl ldlW f Ill Croing Vege(. tabl lic l ats ine Tranpiniab )(lllli Pts'I 3'l Si1age Copi dtin andI lt Anil( Performance', 5tl o ~ flol Scrub11(ik Hardwool ((clpd Conro.i Rundw Wodits DI7;ci il H )Ir f AI cui tur I 1 a 11 1 11 i1 li ~ Economicsilt 1 ime olIi f Plantingt CrownveI II I tch In Alb m 1 2 (II IIII-I (o o Index I' II, to ice PbIse in Higlht 196 15 IIIo_ EuIona Pln of Far Yout 6I;I I I SPRING 1969 VOL 16, NO A oIlili - ki x i-poriiii I ii -l .11 p] 1i 1ixi~ iiiN XIi If(, Aii iclixt of iil x i"\ iiiill i t ) X l iiiii BI. I. Hiivsixi I iix I. S\ix B . ( li I Xxxiiiiati I.i ct Xxixtliii Jii itili Xxxuxi.Nl/l 1)jii i/il I' iiti i Xxxsoiii lc Ii/ii XxxSix/iiii/ i//il 'iii ii//iiiii I iiiii,s , I/ Co l iit f:. I ).x lI i( nlIi I.I)ti Is I I I ,i XxP I u/ 1111111o i l COVER PHOTO. This bed with wooden framne for plastic cover, heated by light bulbs, is suited for early spring plant grow- ig. I I ixicp 11i of i. I t1 I II( ili lc off ),ilt_' I I lii he iii I( lwii of iii Deli litiill0 tof ) iii illi'x i t tea he ii i LI I I iciii iiw N51 C. " I. c iii liii i a laii d i i II li 11 ckc lix l ilxl iii ll il l t") 'I (1 111 I d c I c l i l 111 111ii l oi i x i i i i li i1( Il(.11 0% fi .lt Il i PhD itil/lI - il1-no Ill Ii li ~ ii i li I i i iic I I I tt o(k ]i ~ ii ,' )I XI iiiiiI I Ii i ip ii l. I tilix 1 ills() Ix%(d I mic I till i 'itiiii Ic- ofW,1i1i I (, 1to I I: I II I I )lIll, x h -I Ili 1 i I t I , Ii i IIIII I I I I I I l l i it, 1 111 1 it dI I I'i lu 1i/I/ iiot N a w((n n it i / lli I l ii i li lllllx-" Iill(il\(o (1 HIGLIGHTIS of Growu ing Vegetables in Tranuspla ntable Pots C 11 1 1 ilx i I i xllii )litii ill i filix iii I i ~ d ill pot .i 11 Ill p' ii ii f i ii'~ \\ Iii) i p I liii it Il x f i ll ffiii xx ifi' iii'iN x iill oi i I t1 wNi I )(ii I fl \,ix c I I I (d I INl li I Il \I Ix a (;II) N ti II .i I 41 N l l I i i l i l ,11 \l it I illI \d oiixx ( lull f i,iilfxd ill ( f ixlil tif i fcif ill it Il i i .I Ii i 1 1 , f t I I Il Ix i itI. ~i I i i tf I' I I I i it t I it ) I t II (h i ii iN I I( I i t I' \iti l a 11 dc Ix I Ii I 1( x I I ) I ;I I \ t i fI li i(i il iii fill xI xx I I x l la(h II 'i )I Ii I I .) ( 'i ( ;lI 1111 ii dii tI i xx -( I I l I I I 1111'1 _iiil ;[lw x ) ix ii 1( .( u( ) iti i i(IN liki) Ii iik i if ( lI Ii N i II 3( ii Ix TI xx ( II) ix l I i ii su i I 1 ) im I ii \ Ii o i 1 1( x ('itII Ici fl N1111' xl' I Iili l ( I if ff1 i I l IItfil d l II I wlii i I Iit1'ii ii' I I III If if II tI il It i N I i x i i iif' Ii xxII II N il dS I 1 fix) x Nii f 1 it If fI I i ) i fII m ll I1 I I B I f mi I I I" \ d liw xl i I III ) IIf ) iii I , I i ii lx, x I I f 11 ) i) i .l I N ta I Ii xIi f I I I )\( SAM T. JONES, Depalrment of Horticulture I i Is 2i I Ix o'k' Noif- w I I. III N i ll x i*' 1. I ) fA N It'I;, I I x Iii xt I IiI rit x eIi x IIt I I tI Ih fi x-II x i I I I 1 , 1) 6 %,, I dii k Ix I . I I, 1 2ffIIit \ 2) 2) ;iti tii i ii I%% ) c ll tri iI I \\ I i t I u (JII t I ) I i I I i it i'Il I I\ ~ i I kx II1 : Af i (~ i ii xI iI ,iiflii I X il xIi I i I i n I t N fI I Ii t in 1 N I II 4 I I; I II i i l II I .( ltItItI i I i xiIN It I' I I I . I ( ' A N St c~ IIIm II I II It I II I NtN I ) 1i l tI Illf ii f Ii kl I "4 1 1 (t1 1 o I I( I t I to ii t I it I I Ii xl T2li t it)lo 511) I 1)1 )1.1)1 itI- if I (IIt l (t .111 t 11 I I i INt i III II e ) fi I I11 I I I to1)I I t 3 i t 2) t 2 fi 4- PI \If I II IN hf i1.it .11 L(1), S,1 I fl I li I i Il tltll' tS1111 ft \I~lllt'llill I) i 1 1 ii" i '.'t 11,1 t~l (01 it1 If ff1 I IlI Di x 1 2 I ii x o . hi N i ix/i' iii'i i'iia ll fI ) )I I i I Ix -N 1 "i f t I I () i f t i'it i Ii 4 i I II'x s 5. (f) Nf) xl t i I ii Tiiti' 5ff~ 1 1 tIkN I Iii I I x I 'I II t Ill )I I l t Il x) i IIA I l ; i 'l If iii f % i, i t x\, i I c iii' li , I (x I xx co\ ili slip- poi ti li~i ii.i' ii i i i iiui itio ix xii xx2) i It i I Ifix. Iit 1 1i' a (iI i '1 i gIfItiti xxi) x I Ii I i I x Ii x1 i o 11) t ill t ( . )( x 11ii xi II I x. ,I tillIx I o xx mf ii ' fiu l xI li ii) IxtI.I I I Ai I 11.11 I ' I I I Ni I io\ t hat ) t I i I tit I li I ')i fxt ( ii .II w I o\\ii. \ x ii tI )III f Ii III il pIi Iii Ix x I NixxII I t Nx 2- I -1 1 4 J'i'tx )il 10 oft 11I ) .,5) ,000f 'l( (If C'ist ;ii r 100) x9,5f0 1fT.f65 2 10) a I tI i p I ( i nv it)N I 'lt111 .Ix I i t i 1 ifl x\ I'i I i i i I i )I- 'it I I ) ill I Si ifr I I l I it ,~ Ii I x to 'xI Il v tha 'lxii t'Ip m io_ NITROGEN SOURCES for Coasta Bermuagras E.M.EV NS Dpt f grnoy ndSal A ,. , (), , .. ,, I,, it poli fi lio c p \ d d M.~ EVANS WilIW . Tie i of llt Ag oi ciji So il d ois d lic i Nhil liii Nil 111,1i x silii i itIii2isI iilxjij Lo. , of'ii Iliti (ll2il i ito l II I iit tiiiixj lii c I li lo iit i iii clii liiiiliill. t ill hi'x ,jliiti p r i t' t hei !ix 11 jlic o li uid x lix xtjt tu i V ix ii N63 (11 it xx( iitil ili Co stliti l o[ ~xt1 i iii t N iii talIk x,m l oam iti ilxi]. I il \iii xx i iiit ijititlix ,ix'l'iil jill~~ ii I Ii\t I Ix t t ti Iit T I t x I t xIxI it ) I i it tit x It x II II i iu of Ii ii tI I x ci , i ii I) I Iw II I w lil itiii , :o i liit 5 . li -, I ) I t \ i V ii2, il it' iit til ( ill Ii td~( ' l III, I t;I it (.It xII I I li (i-\ cci ii itci' i ds. Ili fitf lii \\lxi.id ;s I ) ,,i t I I ; I I I i t li I , III( I t II( )t ItI ,I, xiii ~it t i I I111 I tii t II I i I Ii i ixd "i lix ( x -o I x I II i xx I x t i s. Thc ixicl lx liitit"o i [1i 1ii titil ; Ip it h\ii tixtlld. i j) l i lixi c ii i iu. tsit 11 Il lilli b\11 lnii ilt" I it xx l ,I tIl I( I i i t II I ii t I I ' xloi \i t lIx ixt s ii )t k I i I I -t1. ' litt I,1111 is l dil l\ cli i x i t ol asIi c lii-11 a p iatil f il Ii l it l ist i l' l i i xii a1( 1111 iii i bjj~ill 'ii o\ 111 .i li I i i fx oiiti iii ii rakedx titi ( x ii i c ( ji I (IIH icii iii I it . Ai i I s i l i tilli Ilitro 'l Ii itlli lii Solidliliii ti tqla I Iijlit S ii Ii 100 1) xI it \I -I ii lI I ((i I ' i il - i 1 I\ xxI SOl li~)l'xliii it lJ). . Pit. Pcl (.ttilt 55. 1 t t ))( 16. 9,1) T I x tt til I il I . ()\,.I\ 1,i 1) . ~ It c. P(it 155 100S 66t 9 15,1t 2 l 12 7it 1111 15.1. Iwlilti\ ( \ wlt I ill( I cic \\ it, calcillawd Im '11141 it( the \ icId (), tll(. I]()-I)iti w_'cll plot I Twit that ()I if)(' to caWd plot, tild ( It\ idill'-. b\ ill,, wid (d Hoc '(did '1111111(mitilli Ilitnitc plod it thc .illw r1tv )f llitlo'"'cil. It,( M (1\ \NI, (10,1111ilIE'd b.\ 'Ilbtra( till.-! Ilptako. 11 t1w I](,-] litrw-'('] I JAI 111)[11 tll tt (III 11w ticlic(I plot mid (k idill'-, lv\ (lit I.It'. [ppil, I, 4 10"I'( l\,l ol ( lo X, I xi. Blli\ll 1) \(,It \, lo 'S( )I it( I , \\I) I"olm , op \ 1 I It()(,] -, 1\ ol ) I \\I) Hi(,,\im ()I \Ixi\ ,i \Ito\. N63-65 R. R. HARRIS tand W. B. ANTHONY, Dept. of Animal Science JK. BOSECK, Tenntessee Valley Substationt 3 11. X i [' [ ii 0 \ii ii Ii pridici ('lill iiX X Xl' it'i i iiaii l'liX)] parhl XI',ii t Iitti ti(~ti l il~e lol jt'tX i i~\( 4.88 ll! I ,I i it(t I IX IIiiii t I i tttIi\ I i wk I I (I i II T I IXX mi l dt T w lwc 11111 III4 . I.,I ll- hiilti' i,i I (i11 dittXt (i th i i li 111it p lt foli til iS it t l( hit k lo.tt, 1 ih l _111\(,l ( I ii it 111 1tt t l Ii i it ~ i \ Ai ttit IIt Ii It ill. 1' p I il 1 ki t ilt' . :(I I ,t. XII - ilil N JN aXXIIc X fli dii %k t St Itl-, of XItI , 95 tt tii1 Fito 2.1 (of82 tiChaacteizin 2(1.2 28.2 \\('I(' (.1l't~ l/ d h t 1l~ icl 65 38.8 p igll kI'ciillu (1 ud aid %\a Shel1d So .26111 wi UI )l ii/ K (lit r it .Xk kc iti. 4.25 til 131 SILAGE COMPOSITION and ANIMAL PERFORMANCE .' t~ , ~X 'I ill the 1 coii 11 I li it. iI i 1licit till XX ilX I t111 i lf rl 111tt 1liiil 1"4 111 pltilt il. it soi it itI ll t Ilt' stlk a iiIo'te.im ' It\ ii~t tki.11 the. 1 lit i ii () 111 I I T.I. XX Itik ils' 1).( I (Ii Itt Iill I \ tX~t tXXX It Xiiid to i t](il XX ll1 i it 1 i I i XI I I)I ti I I i tI )(I I9 t wIt I it ( o wi I )I i t -I .11 IIuI -tit 1 X I . I ii X iI'I I I til XX 1' 2 i 14 1, Xit 1. it ilii I .11 i ti - o h~ 1' 57ii. I. itill XII! 1111 i d c i ii ii1111w liiXlts IX l ftit (i'lil X \its i l~ I. F . iti l Iielti till XIII 41111111 Promising NEW HERBICIDES for WEED CONTROL In CORN GAL.E A BUCHANAN D,,pa itin,", of Agrouuoniry ouid Soils C H I i xi x1 i \\I I (I) I lum fll (,1 iii 11 lix1, )c ii fj Ii It c ~ ii a ll i ii iiipt(d li i( i ll it i ill 1 iii xiii Iiiii if tiii~ 11 xiiii (1,1icii ti i l iii 1 11 ltiii 1111 i xx l fil fiii fl t iM ()i x i llu iiIcs i i i lot I\ c l cIixii iio xiii ll 1i i ii ,iti Iit xii IM l ili ii 1()\ ilii i 11 co l ill x xli iii iii a li iii c ii (Iii , k4xi xil eIci i ii it l l T1 i1,111\tii t li i ext t x li Nii I l i diilt,ix u til iii I (% liii Ii -1 tix i t i ii .1 i ii llll ( iiiitiiiic ,li. iiil ii it xc ii loii o x iliil A itb itill k lo xli( ti xi i li ill i ~ (.(, ill Io t Iii p i l it ii Ho " Lite k 2 I) icid2 ii 1 il i ii l 1, iii l ii i i t, ;i t iii x i iio I I I t I ' ,. a lxii Ii IM " A 1 I I l i t i , i x1(. oix i l P1111 i iii t i ii t i i x xiiii ix I111 i t I-ll Ii ii 111 lt Ii 11211o1lilia I I Slli So ofi I ( ( . t I (I lxii I I I i x )IiiLkIi\ ii~l liii Ii iii \cI iii iji Ii( it i x i h ill \t Xii up t i l I oM _- .11t ii t. o w 6j il (m l h it o l \ i l f a l il '~. Si) This is the difference that may be expected in a carn crap when chemical weed control measures are applied. Plot on left was not treated and plot on right was treated. at i i l l it illi Ii i i TI I i I ic I)t' i t tij '\I , I i I I I ( ixd~ . \\ e , ii I I 1 )i,) i, I I i' xl(, I ii Iw o o~~~i~l~~ll I 'L i 1,kii i 1. ;11 t I It I hi tll. L4. ptI (:uiuixl laI'li- I 9f7 Ilti itx , Ii Itx Lit 2, 1-1 (I, (k Itiitx it B10 tilt\x 1.1 [it I t\ 1 1t I t 1 /~ ttiit I itk 1 loibuik 16 ii :3. ii li I e I(I it iii , ii I I \iii it til (d lx xxiii x1 itho t iii liiliiii i ii if xiw~ l hidc l ii C1o ul lh l~( [of. ixl (o I ,,.lllcl N), ] IN \1 \ VoIi1 \ I) IVi I In I 'I I I1 I Ii Y) 2),1 -l iii 172 i'I 721 liii 'it 14 212 5511 i'xil itt Ti is i7 s ill I xiii i ) 2o x i i l \\fi Ii,, I \ ( i li xxiii (A'-50tt 1 I \ I t i \\I, ti I11 11ii1ii I. tper Coastixal 'luuin -I 1967 (Il i I t ---- Al Iu.'ii il96 ( I : 5 iii I (Ill(k-- (:P-50t t I (AI .ttiI I ( ]i' t it I Ii ( ii ii V N' 17T 1714 1 J 1i fit iiiiti Ii i Ti it It it17t M/OST VIRGIN FORESTS on the Upper Coastal Plain of Alabama were domi- nated by open stands of longleaf pines. Loblolly and shortleaf pines were also present but in smaller numbers. Beneath the pines was an understory of scrub oaks. The virgin forest stands were cut for sawlogs near the beginning of this cen- tury and much of the land was con- veted to agricultural uses. Areas on steeper slopes were not cultivated but became farm woodlots. Frequent cut- ting of what was left of the better trees contributed to the further deterioration of these woodlots, and fires also pre- vented natural regeneration of produc- tive forest stands. As a result, woodlots became scrub hardwood stands having only occasional pine trees. Most of the scrub oaks suffered fire damage and consequently were infected with rotting organisms. A woodlot area typifying these condi- tions was used as part of an experiment to determine how rapidly such an area can be rehabilitated into a productive forest stand. Fires were kept out of all plots and scrub hardwoods were con- trolled on some of the plots to reduce competition for pines that might become established. The entire area was di- vided into half-acre plots, and the ex- isting forest cover was inventoried. Plots having 50% or more pines were classi- fied as pine stands; those with pines constituting 25% to 50% of the inven- tory were classified as mixed stands; and those where pines constituted less than 25% of the inventory were classified as scrub hardwood stands. In each of the three types of forest stands some 'plots were cleared of all hardwoods. Fifteen years later, other plots were cleared of hardwoods in the 4-in. and larger diameter class by apply- ing silvicides in frills. In each case, though hardwoods were effectively elim- inated, they sprouted immediately. This sprouting was more prolific where hard- woods were cut than where silvicides were used. The inventory shown in the second part of the table was made 25 years after the experiment was begun. On plots not subjected to hardwood con- trol, very little change took place with respect to hardwoods. Mortality and in- growth of hardwoods were balanced. Where hardwoods were cut they had made some comeback after 25 years, but this comeback was progressively smaller as the pine component of the original stand increased. Ten years after scrub hardwoods were killed with silvi- cides they had not reestablished them- selves to any degree. On plots originally classified as pine stands, pines showed a considerable in- crease in 25 years. This was equally true for the plots where hardwoods were not treated and the plots that were treated 15 years later. Clearing hardwoods at the beginning of the experiment resulted in the largest 25-year gain for pines. On plots with mixed stands at the be- ginning of the experiment, only a mod- erate increase in the pine component EFFECT OF HARDWOOD TREATMENTS ON STAND COMPOSITION OF A RUNDOWN WOODLOT ON THE UPPER COASTAL PLAIN OF ALABAMA Initial Initial Hardwood, Longleaf Loblolly and Scrub stand hardwood treatment 15 pine other pines hardwoods type treatment years later Trees B.A. Trees B.A. Trees B.A. No. Sq. ft. No. Sq. ft. No. Sq. ft. Initial Stand Inventory Pine ........................... 19 8.4 5 2.0 48 10.6 M ixed ...................-..... 18 9.6 2 0.8 89 21.5 Scrub H rdw ..............-............. 5 2.4 0.2 110 26.6 Stand Inventory 25 years later Pine None None_ ------- 45 25.5 20 6.5 42 9.7 Pine Hrdw. cut None -- 80 39.2 6 1.6 7 0.7 Pine None Silvicide .....-------47 25.2 19 3.0 6 0.8 Mixed None None --------- 30 15.4 9 1.4 90 16.9 Mixed Hrdw. cut None --------- 48 18.8 35 12.4 27 2.8 Mixed None Silvicide - 46 28.3 33 7.2 12 1.0 Scrub Hrdw. None None----------17 8.2 12 2.3 130 24.0 Scrub Hrdw. Hrdw. cut None- - 19 5.1 6 1.4 52 5.8 Scrub Hrdw. None Silvicide ............. 22 6.7 28 5.3 6 0.8 occurred where hardwoods were not con- trolled. Cutting and treating hardwoods with silvicides resulted in sufficient in- crease in pines so that mixed stands would become pine stands. Loblolly pine made the most substantial gains in response to elimination of fires and con- trol of hardwoods. On scrub hardwood plots not sub- jected to hardwood control, pines gained ground in spite of hardwood competi- tion. The resulting new stands would now be classified as mixed stands. This indicates there was slow progress toward the virgin stand condition. Elimina- tion of fires, alone, was apparently a factor in changing the stand composi- tion. On plots where hardwoods were cut, pines made sufficient gains to change former scrub hardwood stands to pine stands. However, the pine stands were very lightly stocked. Scrub hardwood on these plots showed considerable comeback. Also, on plots where hard- woods were controlled with silvicides, pines made considerable gains but hard- wood made only sufficient recovery in 10 years to account for a small part of the new stand. In summary, in a rundown woodlot dominated by scrub hardwoods on the Upper Coastal Plain of Alabama, effec- tive control was accomplished by killing the scrub hardwoods with silvicides. Hardwoods were controlled less effec- tively by cutting. All attempts to con- trol scrub hardwoods resulted in the conversion of mixed and scrub hardwood stands to either pine stands or mixed stands. Loblolly pine made the most substantial gains, although it remained second in numbers to longleaf pine. Where hardwoods were not treated they did not show a noticeable change in numbers in 25 years, but they lost sub- stantially in their position relative to pines. This was due to the fact that pines substantially increased, indicating progress toward the virgin forest stand conditions. This progress was slow, par- ticularly where only a scattering of pines existed in the predominantly scrub hard- wood stands. SCRUB HARDWOOD CONTROL in RUNDOWN WOODLOTS GEORGE 1. GARIN Department of Forestry 1(1I l l \I I)I I Xli II \\ ill, , I 111 'X IX it 111 I 1 lit i I I I II i i t o I I )I1, IL t )11I1 I i IX IX I illt 1111 11 X i i ( IX I I i i t iii of I I I It iii I t1itI I 111 I121 I il I 1 111112 h I II I ( to I XX iX I I I I I i T I I I XII itX X lItII I ti X I I II Il I i I 111 I 11 til l Ii I11 it 11,1 ill- ()I 1k.it 11 lw h it( t )i i i I ii iXX- IX, it I X II II IIi I i h.1 I I I I I II i .1( tII i111i I ii II I I I I t I II tIl XI II i fi 11 Ii t it X I I I11, I * t \ to1111I to )I I I I i IX I I i XX I I i X -il XX I1 1 I i I)1 I i t I I III m IX I I I I I i I I11 I I i 1 1 till iii 111 IX Iii I I II I I '1t IX o 111 I(l i 1111 t IX ii iit I Ii 1 i I Il 1 1 i 'I ii IX I I I IX Ii i I 111 to I I Ii ,111 XXI~~i I Alli ii il li i I t Il I il l i i i (III m ) 1 )12l td ()\,Ili( ' Id ilt(il i h\ 111wn ' ' I i i 12,l 'ii llw r v Ii( I iXX I)i liti X I ii i \ ii i i iXII_ \\ iiit ' I I IIO w I i llill'I ]Ill( I ii t 1(, \ l i tI II I I itil l XXI I()(.(l ii it I III I -I I it IX I 11 1 1 i t lIi I l it o 625 125 25 50 I00 I Trufiuralil (ppm.)I FIG. 1. Effect of diffe rent concentrations of trifluratin in soil on oxalic acid produc- tion by Southern Blight fungus. Soil II eriiiues Affect Oxalic Acid Produiojn iim R. RODRIGUEZ-KABANA o-1 E. A. CURL Deporuielit of gololly afud Pltif Pothotogy 4r 8 2040 80 Afrazine tp pm) FIG. 2 Effect of different concentrations of otrozine in soil on oxalic acid production by Southern Blight fungus. -1 : )'I I ti I il i d S ill I XX I 'I IiiI I l IX)1 lit(I~ IIi' 11111 s Ii I iiit III I1 1 I It tl 2,1 IXI Ii illI im I f I I )I . tiI if 1 X 1( 1 1 1 11 1 it 1,1 t I I i I Il ( i til Iii~i 11 I m I Ii II I II i t I I II Iil I Ili i ill I \sp i i I(I i (i i I1 dI1I1 I i II Ito '(,I I ( II1 I I 'II S \\i t i I II I ii tI t SI I I I I I ,I( ilwil I Iit It tl. 11.11 iii I I i 1 11111~~~ mi22 1111 lIi t/l I 211 to1 )I t k n I .I i II II I II XX I IIX I m I i Ii Il II o_111 lii I iIl i t I I I I t il 11 I I Illt i 11 lii l iii I ii 2 II I XX I I1111 t I t to Ii I I I I 11111 1 1 11 1 1 11 t Ill 2 I t 0 1 is I i it II I II I t I ii i I( lii III t (11 Iiii it ;Ill it I 'I( XX ti I T I 1( 111 1 ii tIII I 1 Sit \Ilt ( 111 1 1( of i 11 k 121( i I I I I I I ii ii 'IX ( I 11 Ii I411 Ii( d i Iw \i \ ii h ih iii ii I I Ii I n II I i I I i 111111 t 11 1 it I it( -i I t , t I I n I i 121I I t I Ii I _ I I % tI 1 111( Acid Units per 9p0m 9oi Effect of chemical pinching is illustrated here: left-extra branching of chemically Marked Growth Effects pinched azalea (left) is contrasted with non- pinched branch; right - chrysanthemum \t A'I)III (.1illici .pil~I- hiL if* T , I %_ i sproyed with Offshoot-O (center) is compared wo(1ut\ )I with hand pinched plant (left) and others i l i. ii.. . l~ u i sproyed with Emgord 2077. ittilix Itlttxi. 111 tx ilollit., fI)(- P N H N ,fi rixii J xj I l il Ii i lx i I fi x t de( oI Ix ii lif, I I it-I mi t I 1t ,1 i-If tl l it I , I~ t itt I it tilk t l l it he11411 I i I\ (-( lit t a p litti f i (-x i i I tt ix ttl loili it t ll('\ \\ i li t ii t i l 11 ittilx l ix luxk fl t til iid ()fxiitti f t iii li iiii I(Lj of i ill ii1i i 2 i Pill It I i I I t I II( lIxI I It I Ii ii Iii x I l (t 11\ Iii 4 i/ t. I I litit I ( 'lIt i t o ff it txiI Id (. l i -)I I I icvi til i ll 1(i 1 if I )I it to i x.( if ft i ~ ( ) I11 (LItiIIII III] itt ( i lit ) I i xxI \1 (xxI IIt If Itt I xI t II IIo iiiliilit Io til will 11111h1 iwsllt , \\ 1 i I It I IIT- I Ir i lxi I i t I I IIII i ii i ir i l xx I i ll lxx-, \i I I I (L. ,III ti i- (ij fx H i p ,it I , iu I ft1.1d I O eiii ' S /If.. i iu 1 I t1 i Viit itv Ii, f 16) 1 f. iii 1c 1(i 1 ) x ii f l \( I I i ()\ i I i )Ii I I x I t-ux ix111 lit] i lilt ml il i ' i iii i I 11 , f l i Many Factors Affect Pinching if t illit ii ut itult1lo 1lif x ~ l i o if .1 I 1 u fi i f I ( xI i t _ " ( I t i ITt i - 1111111111 i iII() I ft ;Ii1 xI I x ii x I i t I lilt ; 1 x )I x li xT it x iIIi) I tx) i il Jx ixc xI I It Sl ' Nto'it o. fill, 1 /fill, /I If k.m~ --]I1 . ( T 1 , f IL( ('I tOd li\ ( ,l .11t iii ii ix11 1111 it .11t 114l ii xiii ix cowt (i ]il \ioTrt p i I( I d (; ) It- Ittt I (11i TIME AND LABOR KENNETH C. SANDERSON ond WILLIS C. MARTIN, JR. Dept. of Hoticulturie t-i i , Il (;ill( itdt I ) x lit s i l it x li ifoit (t1 will ill il )Ii itt x l i itt il-'i *xx liI I I IT( I jl ti xli t x I 1 11 i x I 11 If til ft Iii l , 1i I, i Ix ii 1) 11 1 xx 1 t it I li xI if .i ii 11I ft x 1 2 t I 1 5 1n t I i i ti lt x ft till it it litI I (1ii Ii liii(,' ft Il ot fI Ix d I xx l ih Ifl i T III Ii i I xIf I I s. tI l i I fit I I i .i )I I I ( Ii ' Ii oi fi tii 111m I I i Itc I I (i i t I I . \1 iIIt 1 .11 1i 1111 tilti Temperature, Humidity Related to Allatoxin in Peanuts URBAN L DIENER oid NORMAN U DAVSf1fcY , Po w pwil iix ii ill ' " Ij F\ ilxld I I 111111"' -ti ' FI i x11(v lx Illi t \ I x I II I ill t I it ll\i- alit 'I II \ (,- I l i Ii ii ii I i ' Ix i x Ii It .( Ill i I _ ;I ,i .I I it it ] I )I(I(II ( 1 1 I j I(, I I til x I I is[ )l \ . So1 oc iii ll llll\ lllllill 1 '11 I I I\ -Ix t il Is I II\ I ti I I ,II 1 Ii sul I I I I t) iiw 1 ) \ ( I Ii 11 I I II I ,llllIF Ii v, Ji I x i l (.l so lo,1 I i ( o 1 .1 1 t11 I slI ! i x I i , .(1 II -I,111 t(-it 1 )1 il \ (tu' Ill illi- Iful Ill .x\ 111111 I l 11o i x i tll \ i zt I wti 1)11 t . _- ) () . 1 . to p lII \ I I fItII \ i I /(/ Ii f i ill I I fx 3 I I ii Il I1)1t1I1 lii i 11 f11( 111 I t o Ii t I t s(Ii' lI ( 11poo Ill s I )I I I111 I I I )It) ill t i I 'I I Ii. it ', I I IF t1 1() l fix lit ill i I xl(- I( 11111 -I II I I i l t I I I 1 1 i l i lt I xI I )I t iiiit x \ itIw 1' i I \x I I Ic I ji I I I I I no I I I I t I11 I , i i s ill 10 (IIIIst It II sx IuiFF 'i I 1 iitxI I fIll I tx \Ii) - I 111111 ii ~ t f fill f I~i wk i Ilt Il ) I iii - I It I Iiic k ,i ill k i i I l l iI (F, t ii( f )il ii ixx II F 1111cd t i t I'ii k itodi x l ill itm F Il t ws \it ) i 1111 (' i ll . t I w111iii ill ii if sI II _ t l II I F )i f , If ill 1 M i l i, l t t1 F I it 1 i', ( x tl 1111 'Il il lo \( I ll ix i lix i Ill I' \\ is iii Fux k F/ill (Ii Fi fill( ii t t lit (LioF i I F 11 ii ix cli F ~t, fl(ili k 1 le iiiF )Fi Ii I'F F hiI I I( I it 50 1 i s I i x I 1 1 11 1 111 ii it i it i ' i ti fI I I t is I fIl I xIII li lt 1 1 ( , Ii ifIt ltlIl f I l),I IIIItl slIloill cd i i I IIw Fhix i x li i~ I' t~ I I i I I li t ( i t\ i l( Aspcrqlllus flaous mold devclopc on thcsI. peanuts in 7 days in experimental chamber maintained at 86 F. and 92.5 00 humidity. //i I li io i 1111 iii' 1111 it I, (.11 il iF 1111 ix * 111 i i lw(.j iiiF1tII I t xxil o l l i I iot 11 1(i i l ol (d Ill(fl tii x if I flitd . I 111 Fill it11 1 it iwi ft i I fitx1 111111 fdit a d s'( lo - i i as ill illI lIi F 11111 xxi 1 f' il li i d i i ( huh tolIxti Iii F ii x 11111 iii t lotI F Il i 11 tii*wl I l ,1 f ii id ill xIl~Ih i Flx\~ ilop r illi l 1(Il~xxll h pv ill F il lo d p o (sillixI iF lsI\ i l(\ F w llli I II 11 P] \ I I , 13 lix I FliillliiFitx xii I .31 uS Il t luto lilt lo ,,Il -, I0. 1)t 10 ill0 I, I .ItII(ii t't F I Iu IuI m l I F I lIlt tti I 1 I t) 1 of hI - tIllA 105 3 l I lIi F s I tI I I II III I \ I I I . , d I I t I I I I I I , T E DEPARTMENT OF AGRICULTURAL ECONOMICS, having its origin in 1928, was not among the first to be organized in the School of Agriculture and Agri- cultural Experiment Station. Prior to that time farm management was taught in the Department of Agron- omy and Soils for 1 year and in the De- partment of Rural Organization and Farm Management for 7 years. The de- partment was organized initially with two staff members who taught three courses and conducted research. These courses were Agricultural Economics, Marketing and Rural Organization, and Farm Management. Agricultural economics in the United States is a relatively young field of en- deavor. It was not until the early 1900's that attention was paid to farm manage- ment and cost studies. In 1907 Congress made a definite appropriation for work in farm management. The bill carried the phraseology: "To investigate and encourage the adoption of appropriate methods in farm management and prac- tice." As a result of this appropriation, the Office of Farm Management was set up in the Bureau of Plant Industry. Re- search in marketing had its beginning somewhat later and was given a boost by the Research and Marketing Act of 1946. Teaching of courses in the Depart- ment of Agricultural Economics at Au- burn University in early years was pri- marily as a service to other departments. The curriculum first administered by the department in 1931 was known as Agri- cultural Administration. Reason for such a curriculum in the School of Agricul- ture was to provide broad basic training for young men in basic agriculture, eco- nomics, and business in addition to pro- viding essentials in the sciences and liberal and communicative arts. In 1966 the curriculum was revised and the name was changed to Agricultural Business and Economics. The growing demand for young men trained in agribusiness and economics was recognized. Approxi- mately 80 undergraduate students are now enrolled in this curriculum. The first Agricultural Economics De- partmnent Head in 1928 was J. D. Pope. Research work on three projects was conducted in fiscal year 1928-29. These concerned relationship of quality of cot- ton to prices paid farmers, economic study of poultry in Marshall County, Alabama, and an economic study of farm organization in southeast Alabama with special reference to hog production. The cotton study pointed up wide variations in prices paid for cotton. For example, on October 6, 1926, for 25 bales of middling 7 /8-in. cotton sold in six different towns in Alabama the price varied from 8.250 to 130 per lb. One conclusion from the study was that con- siderable opportunity existed for more exact use of government grade and staple standards in marketing cotton. A study of farm organization on 97 Sand Mountain farms in Marshall and DeKalb counties in 1929 had one of its five practical recommendations as follows: "Men with small businesses may increase the size of their business profit- ably by a good sideline in poultry." Little did C. G. Garmon as principal researcher on this study know of the mammoth poultry industry that would exist in the Sand Mountain Area of Ala- bama in the 1960's. Possibly one of the first agricultural economics studies conducted in Alabama that included some survey work was in 1924. This work was conducted by J. D. Pope, Specialist in Farm Manage- ment and Agricultural Economics. The study concerned egg marketing in Ala- bama. The fact that small egg producers received the lowest prices for their eggs, that grading of eggs was of little value without consumer education, and that producers who had established direct marketing connections were ahead of others was pointed out in the 1924 egg study. In 1935, Professor B. F. Alvord be- came head of the department. From 1929 when he came to Auburn to 1935 he taught all agricultural economics courses offered. With overall emphasis on production research and teaching, growth of the department was limited. However, agriculture began to change and agribusiness began to grow. Farm- ing changed from a way of life to a commercial business operation in which most of the inputs come from off the farm. Scientific and technological im- provements were made and there was a need to determine whether these im- provements were economically feasible. Consumer incomes increased and the re- sult was increased demands for services such as processing and packaging of food and other products. So-called sur- pluses developed and the need for em- phasis on economic studies became ap- parent. In the late 1940's and early 1950's emphasis shifted from production to marketing research and considerable growth in the department occurred. In 1950 there were nine full-time staff members and a cooperative USDA em- ployee. Reports were filed for 11 major research projects, 9 of which concerned marketing. Marketing research studies concerned cooperatives, livestock, milk, cotton, potatoes, eggs,, and new sweet- potato products for food use. Staff mem- bers in the department published 11 Sta- tion bulletins, circulars, leaflets, or prog- ress reports and contributed to the pub- lication of two regional research reports in 1950. In 1956, B. T. Lanham, now Vice- President for Research, became head of the department and served as head un- til July 1, 1964. On that date Dr. Lan- ham became Associate Director of the Agricultural Experiment Station and Dr. J. H. Yeager was appointed head of the department. In 1965 the'name of the department was changed to Agri- cultural Economics and Rural Sociology. Presently there are two rural sociologists on the staff. Two research projects are classified primarily in the field of rural sociology and five courses are offered in rural sociology. In addition to research and teaching in the area of rural sociology, there are 23 formal active research projects in production, resource, and consumer eco- nomics as well as marketing. Ten of these projects are being conducted as a part of regional research endeavors. Present professional staff of the depart- ment includes 13 persons, 8 of whom hold the Ph.D. degree. 11 A History of Agricultural Economics at Auburn University J. H. YEAGER, Department of Agricultural Economics and Rural Sociology ~L1~ Time of P/an ting Crowun retch in A laba ma D. G. STURKIE, Dept, of Agronomy aLLd Soils til X IL X I \L. I I . IIoXX IX\ 11(11 I (IIlILi/II I (I11 Off L I IX II o1p XX tiX LoIrI cv IXIIILI III U11S) L t.111 LI ,X iti coi i tt lot111 1 XIII \\1 I .( I X 1111)\II tc IL ILL' II I I t I ILo ii L II 1111 S X I 111 r 11)111 II I IIL Il I I I XXI ( tl I-o( I IX 1111 t~l IIi I) I)XI I s111. till I I. I LX X( (I.\ 1 t1 lilt i ( o I IX IIc I I tIX I 111 XX LX I I 111 III iI I I I L I I1, _' I II i ) I IXI()\I I 11 H I ~t I I X I 'll \\ I It 1. 1111 1 I fiII I, S tI L it itI NI 2 First11 1 plat it 1 I i , \\1 1111 X iI'XIII 131111 '\ltil l, \ILLv Lit Nliiiil 111 ,ild iLX - Li t I' hlorcL l IILIILI I Il l t \\1 r111, 11 I I I I L AIIII 11, 11 to " t I I it I II4I X I X-t o I I I I I1 I II I L XI X I 1 1 \\I11 II N't 111(1 ITI T I biX Il iL i lI pIsL k 11114 11,111 I II (ILIX IT 1 om11 1 litIIIildI 1111 I 1 .11 i\il XI Ii Iii I I \ X \ I (i . LII I I I1111 t- %c e 1 ite ip rxill Xte 1,11 X 11111111 N I IT Ii 1)64 I 1\ I La itI Itil I 1 tIl 111141 I \I '! 1111,1 X (i I i~ w I f - -1 19 ;111 1 clilll l,, XLII 2) i.fll LII I XX IC I W111ill) II t 1 tI I L t s IL I IX 11 I I 'I IT X illI L I 1 2-iI I. lit I II I pILLc I I I ' II ( ; I ) I I1 2 tILI I IX" II I LI I I' LII i ftI I I i LX I I t I I I I LI I II1TI I I L I IX IL -II I I XX' I IL 1 1 I II1II1 iLt I I f II LI I I 'I I II I II II L I I II I t I I I I I t t. I I I I I II t II I t I L1f\11 I 111 I / I II I 'I 'Li 14 111 k I I I I L t I XXo IX I t I I IX IX I Iit I I IX I tI I I I I LI I I I I It I i I k I till ( I I 4 I II SI I tL 'IT XII I I I i It 11 I4ILL11I1S ILI I I LI 1 I L\ I it I I L IX I I I I I IL 't I LI I I~ I I II 'I I I lL c L II %I L if I II t I L I 111 t I11I1to] I I)Ii I tI I I X ' IL II1111 I LLllX i l I ,11 I I )~ III lt I L I LX IX I II I Lt 1. 1 11 1L I t I ll L I )1111I I I h . l I I(o T II (. ,11 XLII I 111 12 5 IL h. ILL' KI co i IL I2 11). i l X 111 (d 1 IX ll LIII 11f 1 pi 1111l'- a 1 1kiILI oLL of cILIIl IIIi1111L4L I I I 1 1111 I I I I L I I I L I L I II I IL I t I I I I XX LX I I I I I I f I I ~ I)L I L I I L I II I n L 1 1 I iI I X11 1 I d Il I I I X I I IXI 1I I I I I IX IX I I I I I I11 ti l' t11- 11f I) I I I I I IX I X Iif II IT I )I t I 11 I ill I I I II II IX I il I II I i LXII I t I X I II I 1 1 I I X I ILILIL I I LII IL tInI I L I I I I I ,IIII tI;II III I11 I I I \II' L II I I LiL I I , I )( - I LX I' II I I I I i III' XIIX I ' tiL I I I I ()I I TT (2 I 1 IX 1 1 j IL 1 Ill' 4Y X LII X I 'I I I I I LXI IL '1( d 1 I ill X )11 ))LlI tI LiL'(q 1 1 LI\L Lit tIL L I \ Ii 1 ) l ' i l I 'Ik 11 1 - lah tL II (1' N 11111r XLI I I1 I NILII L ,(I I I 211I 111111 III.- I 111,5 \ 11111/LI I4 111 1 6 II4 III 2.2 1.6) .S: 2 0 : This stand of crownvctch, photographed June 1 1, 1966, at Adams- yulle, Alabama, was from a planting made April 17, 1964. 11 illh (I t, 1w,[r 'l, J)'"'Ild'. 1() fil't da\ )I molith T i i5l0) of \5 fethl Ir liot deep] f)1055 lill( dlld sobh t'e prila , aNx till age treatmenIt h as b een Invest(xi gated fi 1)111 timne 1to tllie wxithl\illaix lug results. As inoderni mlachines are dexveltopedl and ias fal-iiig teeililiqules iil)llrx e. lioss es (' blasitc (lilt oral p)ractices Ilced to be emlliIiiallv re-exliateti. Rleseairch flits shown that ('ottoll plaint roots ('allilot gi 05 wxell tihnonugli Very stronig soil lay eirs sl1ieh ats t raffie 'Solies 01 I lard pails. W\hen suc bar l a viNers exi st. rooting seemns to he sexverely' restrieteti to the soil areat ahox e those laxvers. Ifi a layer caln Ia.e broken ill, deeper irootinlg shiouild cl This deepei root in g wou(ld 1 ean a gireateir ail )111t of soil xwateir should he axvailahie to the( plaint, anic thle crIop wxoldh b e m ore diot ith recsi stanit. I rriglatioi Is cold 1 alsI) I le scheduliied fuirtiher apairt. There is ailot I c pr oblei inioxolvxed, Ihoxxe . ELxperimIIen ts hiaxve shlloI thlat c'lttoil roolts (10 lot Troxx xwelf ill at subhsoil, e'vein if it is loose, ill 55ilich thle ceilIlieal eollditiolls are till- faxvoraleit. S(o cheimIical probl)1ems may sto p rolot gr'owx'th mollell tile samle ats I liglI Soil str en gth. Thlree pirimary tillage tec('lipies xxecie studiedl inl tests at Atihorii Unixversity. These xx 'e disk hlarroing l 4-(6 ill, det'lp; chiselinig (lirectly liilidC thle rowx, i fielltl callled -precisionl tillage";: anld deep tllrlling 12-14 ill. xx itliia 11101(1 b oad p 1 loxx. The tests xwere illnle ill at sand Icx ami soil Ihaxvinig at coin pac'tt'( lax ci at at diepth (If' 5-6i ill.~ and( a subiso1 il JAI oIf 5.0.. All tiaffic and hlarrowsing xwere kept tol at liiilinti oil thlt dleef-plo\\e plot to pre~ecut so11iil rc llla(tioll. II ll 1(15illg h erbicides aind for fil1 seedbhed prparatxon Iwhere deep'f p 1 lowSillg resulIted l iii (11 cldd sli fce, Also, xwhee'l' triafflic xxas ke(pt to the same idd(les xxhfeiee pxo''f ssibl t) o r1)die~f re- i t'lilpaetionl, anid thle i'owsx xscre puit ill Ill', saili lle oatiolls echi xyear, To fiind if (feel) tlrii iiIg Ilr5 sibi)iliig wxas iiecessarv eachf x ear, tests xx crc made hi xx hiell deep tillage treatmen ts sxCIe uised ill(' first xyca' ol andc tile ploits xxcrc (fisk hlarrowedI'l the follossing years. These ti latill(ilts aie (f(sigilit('(i.5 E'iFC OF I I''LLA(,E ON IEitLD OF1 SEiED CoilOIN OIN A SAND~Y LOAxM Sol], Tillage treatmiet Yield of seedco lttoni 1965' 1966 1967 1968 Lb./A. Lb./A. Lb./A. Lb.1A. Axv.' lI)b./ i. Disk harr ow Only' (T,) 2,463 1,7015 2,251I 1,019 1,658 mo1(1 lboardi plows (T21 1 2,8t)2 1,98:3 2,096 I,1t22 1,7:34 T reat. T, ill 1965, II iarro(IV(( laotei '1 ,R ) 1,777 2,292 t 1 M5t0 1 7t0 Chisel It0 il., ((Itars -till 5 tip 1 (' - 2,.51~5 1,846 2,191 1,201l 1,747 Tre-at. I, iii 19605, laolliIwed lalter ('I R ) I,7:33 2, 2 60 1, 166 1,720 Subhsoil 18-201 iii., tilti\ ate, p)lant ill (lilt' tripl ('14 2,322 1,858 2,4117 1, 160 1,812 Ilariwe I I iter 'lii) 1,74:3 2,329 1 ,0t37 1 ,70:3 C +~ '1, IT') 2,787 2,1:38 2,241 1,180 1,85:3 Tre'at. r iF, 1965, harro Iwed latter ( T',R13 - 1,808 2,35t0 1,t099 1,.75.3 A\ vr,Lo(e __ __ - __ - 2:579- 1,84:3 2~,2701 1,115 1,74:3 DEEP TILLAGE ow eaO& /94Od"Cki4# JAMES G. HENDRICK and WILLIAM T. DUMAS, JR. Department of Agricutural Enqgneerirna T.- , T:J, jsx hll' 13. illtficates residuall effects of deep till- age) etc., fill Ile tale. f~Uctiliteu rates uise'd ill thlese tests xxr b'I'iased (oi soil test I ('('11111)1('111dati(II s, ali ( slififlcil t feutili/tn \\xias appflijell tol PI'C\('lt its heillr at lilihitilla flietor. ill 11111101 al s, I .illec afpplicationl \%its [tat i cllIllnlldef( lx ilt' Soil test- hg (11 allhl 5r. 1110 111)1111 sil testilmg lailIoiatolix lecohill 11)ldilft iol 1 is based oil lillillg ill(' upper 0 ' 6 ill. of Solil, tile Soil hdeptil lisliall\ thor-olughkIllixehNd fIN ('OlS O'ltillla tillage. sillce tile deep till liII tests 55 ('r' tilo ml~~ix lied tol 12 Ill. OFI 11101e, 51i'I'limle \\ias addto tihose plots tol adijust \e.ai , 19(65-6S. All deep tillage treatimenlts IT'-.. T:. T I sho\\ ~ 111 adicesdils ilf l coma le tlo siali(155 tillagie(T ill15 tct depillo,'ls'fx lot ove il( ("I\dpot o 411 year \\,eit 1,4 11). pert xxar Aso it'lI'li an be llllI ha ill 2('fa 1111 trIll clifflle' iliat' c of, t tile 5 toill stllrt't' llt'Cl'( lt iI 15 il s i('I c' lx I l's t c tclill 5111 ise1tm1 nts11 g a f forcI tr l ie t'I t'5 o plll it~ to el oil )ee ( flittI piiitti Icstelt'r'b) 61f) flex si \(lxx 1\5 .111xc'x IISI. T its filloIll 'atttt isi. ts e I If f il l 12ill.e pr ept 1 io I rseac Its Ill idctdta .tllro eltai Aisl \138rc ietrce il olshvn ieX.rlitr eit Burford Chinese holly plantings near Auburn showing weed infestation It before treatment and weed control (R) obtained with ammonium sulfamaote. Weed Control in Highway Plantings of Woody Ornamentals HARRISON BRYCE an~d HENRY P. ORR Depctrtintte of Horticuture i t " I lIN i It hi It 11 Fs I 11 il 4IIII ii' It I FIt It I tit I It i t i It F )t Nt i tt'',i 11f1 ( l l ix F 1h l x t ite st II1 11 tiN i I11. if If I; Ii til 1114 t i x I i 111 iili t 111 (,l ', I I I I ()lit',1 lIi of k~1 t 111 t I xI f ill I II t ii14, t t1 F \ -i Tox 111 't ii flit itx Iiii\,i.t xx lit fi 11 11 1 \ 1l1 i l it] of piI' 11 ill ( Itt-ild t 1 , .11 141ll l','t'' Nc lixi' Fi I fi i i )I t I N til I \ if 11 1 l_ i f it I x I ' Iiii ( )x 'I I I I I 1 iN I I l i 't II I I I1 1 I i' tI ll I I It x I l I 1 Ii I14III(" I NI Fi t~ til 11N1 x Ii I I f r_ t I t I tI - t ii 1 1 1 \ ) I\ .1 )l N x I I' N -(Itt tit F I Ii 'N I i I. I Il x xxi t it x .1 , L111 iSt, lx I S I i x 1 11 it t I I lII; II i I ft it i I ( , iI', ' If I x I i x III II' N f I it t i IT l x iII II it i'll ( ( 1111 Ii' I ( l I l I I II, ( Iii/ilItt I l fl I ( I IIIt Ii I IIf ( t I ll ( lii I'll I14 ( I IIN itInII I il ii I I '), 1 it lii i l x i t I xx;i t TIlit it 11 l IT v xxp ilI IA II Ilix ,II I it 11 11' 14d1 il Ii Ii 11111 i t i .t 1111 -i' .~ 1 -5 .\ 11 ,I ' if t , I i t iNi\ t ii', xx I I li iF/ t1( , 1 N lIi ' / i1 I . t I 11 I q - IN i II . l11 ~i lial i IfIxi 'It I t I i I .1 I I I I t xx i 1)I )I tI li't l' kit ;, I t ,I I 1x ''1ll Ii ti t I f ft I 111 t I i ; I I It I f(III I x I t f11 c I I (. it i at i11.) 1111I1if 1 5 i'', '', 11 I 'I' \,i I11 I iI ItI t I lII I n .1 N I IF N 11 ut it xx p \11 \ F tit I ir, i 'x I '' 1 ill Id I t .i i Ix F n tIl II 'If II 11d, 11.11 111 111 1. I I f. 1111 tl il It I t It i '5 ith 11)o'I I~ .I( ftNI I I I f-I 4 ft I i I 't i o I );I I In If Ii it (of i lit II (d I m h ()It' I 14.l\ (,(,(I 1 I I Illit Fl I 111111 h-N c I lxI Io\, t x )I x it ()IIN i F t III I ' ( i\\ ti Itlt T I i] I I Ix I x Ii I I t I x It o I ( I 11 'tn ,, I F N i, i I I II (Iit t /1 l) lt N f ITi / ii I 4 I '' I t I\ I .II1 f t~ t' l t it Il i tF I If ii H i I I I J Ii i t i t ' I I x,i t f 1 il I t i ii . i I t 14 xI i ()t i t -Iii Fli ifi i l k ti-t FI F t_,i I I it I It I i I I 'I\ l t ix ilx il I t .I i I tIt I ll )I It ) t. it t .11it i i ,' 1 (',[\1111 \\ ItN i ' I it ii Ii I \\i il t 'l,I ii If 14 .11 F It I u i , [,it )I ti tit IIi I It it d 41 t i it Il I t't i ',It' '( . t I li li I I I tI I )I.I t i t I lt I I 1.1111,' it 'S 2.1 It I ti t In .. ill. tiii Ii I. 11.11 ti I 'I '-tillI Ii If rIt 1,I \\ I 1 1) ( :(,\ I It'll I III HIGHLIGHTS with this issue enters its 16th year of publication. It was estab- lished in 1954 for the purpose of re- porting results of research by the Agri- cultural Experiment Station to Alabama farm families, agriculturally based busi- ness, and industry. If you keep a file of Highlights, you may obtain limited issues for the past four or five years by writing the Station. Listed below are the articles published in last year's four issues. Animal Science USING HIGH MOISTURE CORN IN STEER GROWING RATIONS-Harris, Boseck, An- thony. Vol. 15, No. 1, 1968. EFFICIENT GROWTH MADE BY CALVES ON RYE-RYEGRASS PASTURES-Harris, Bos e ck and Anthony. Vol. 15, No. 3, 1968. LIQUID GOLD FEEDING SYSTEM-Anthony and Cunningham. Vol. 15, No. 3, 1968. AUBURN'S SWINE EVALUATION PROGRAM -Collins. Vol. 15, No. 4, 1968. PROTEIN LEVEL INDICATES NUTRITIVE VALUE OF FORAGE-Anthony. Vol. 15, No. 4, 1968. Dairy Science DIRECT-CUT VS. WILTED SORGHUM-SUDAN SILAGE FOR DAIRY Cows-Little, Rollins, Hawkins, Smith, and Grimes. Vol. 15, No. 1, 1968. MACHINE STRIPPING UNNECESSARY, CAN BE ELIMINATED WITHOUT AFFECTING DAIRY Cow PERFORMANCE-Little. Vol. 15, No. 2, 1968. RAW MILK QUALITY AFFECTS PASTEURIZED MILK- -Cannon and Roy. Vol. 15, No. 3, 1968. Farm Economics COMPUTERIZED RECORD SYSTEMS. WHAT THEY ARE AND CAN Do-Miller and Yel- len. Vol. 15, No. 1, 1968. FARM OPERATORS' POTENTIAL FOR CHANGE IN OCCUPATION-INCOME-Hogsette and Dunkelberger. Vol. 15, No. 2, 1968. IMPLICATION OF CHANGE IN AD VALOREM TAXATION OF TIMBER-Hurst and Yeager. Vol. 15, No. 2, 1968. PRICE MAPPING DETERMINES GRAIN FOR ECONOMICAL FEEDING-Hurst and Miller. Vol. 15, No. 3, 1968. Farm Machinery PREDICTING MACHINE CAPACITY-Renoll. Vol. 15, No. 4, 1968. Fertilization SOURCES OF ZINC FOR PLANTS-Wear, Hartzog, and Evans. Vol. 15, No. 1, 1968. INTERACTION OF NITROGEN AND BORON FOR CoTON-Wear, Scarsbrook, and Lang- ford. Vol. 15, No. 2, 1968. METHOD OF APPLICATION AND KINDS OF FERTILIZERS FOR SWEETPOTATOES ON LIGHT SANDY SoiLS-Johnson, Turner, and Carl- ton. Vol. 15, No. 2, 1968. BROADCAST-DRILL - SIDEDRESS, WHICH Is BEST FOR FERTILIZING COTTON?-Scars- brooks and Evans. Vol. 15, No. 4, 1968. Field Crops MID-SUMMER ESTABLISHMENT OF COAST- AL BERMUDAGRASS-King, Patterson, Brown, and Langford. Vol. 15, No. 1, 1968. NEMATODE- RESISTANT S ERICEA-N ow POSSIBLE-Donnelly and Minton. Vol. 15, No. 2, 1968. SUMMER VACATION NEEDED BY FESCUE- Berry and Hoveland. Vol. 15, No. 2, 1968. ESTABLISHMENT AND MAINTENANCE OF LADINO WHITE CLOVER IN THE BLACK BELT -King, Smith, and Grimes. Vol. 15, No. 3, 1968. MANAGEMENT AFFECTS YIELD AND QUAL- rrITY OF YUCHI AEROWLEAF CLOVER-Hove- land, Carden, Anthony, and Cunningham. Vol. 15, No. 4, 1968. Fisheries OVER A TON OF CHANNEL CATFISH PER ACRE-Prather. Vol. 15, No. 1, 1968. Forestry VARIATION OF WOOD CHARACTERISTICS OF SWEETGUM-Hunter and Goggans. Vol. 15, No. 1, 1968. TREE SEEDLING RESPONSES TO FERTILIZA- TION BY SPECIES AND SLOPE-Whipple and Moeck. Vol. 15, No. 2, 1968. FUSIFORM RUST IN SOUTHERN PINES- Davis and Goggans. Vol. 15, No. 3, 1968. CONTROLLING HARDWOOD UNDERGROWTH IN HILLY PINE FoREsT-Hodgkins and Watson. Vol. 15, No. 4, 1968. Fruits and Vegetables TOMATO VARIETY STATUS-COOD BUT GETTING BETTER-Greenleaf and Jones. Vol. 15, No. 1, 1968. PLUM STORAGE PROVED PRACTICAL-CAN EXTEND MARKETING SEASON TO AVOID PRICE DROP FROM OVER-SUPPLY-Norton. Vol. 15, No. 2, 1968. ORGANIC MATERIAL AND IRRIGATION FOR SWEETCORN ON LIGHT SANDY SOIL-John- son and Turner. Vol. 15, No. 4, 1968. SOUTHLAND CANTALOUPE-AUBURN DE- VELOPED VARIETY FITS SOUTHERN NEEDS -Norton. Vol. 15, No. 4, 1968. Insects and Controls WHAT ATTRACTS BITING FLIES TO THEIR HosTs?-Hays. Vol. 15, No. 2, 1968. ULTRA-Low VOLUME SPRAYS OFFER EF- FECTIVE COTTON INSECT CONTROL-Gilli- land. Vol. 15, No. 2, 1968. THE FALL WEBWORM-ARE INFESTA- TIONS LIMITED BY NATURAL CONTROL?- HYCHE. Vol. 15, No. 3, 1968. Index to Articles Published in HIIGH-LIGH-TS of Agricultural Research 1968 15 Marketing FRESH MILK SUBSTITUTES-ARE THEY COMPETITIVE-Wilson. Vol. 15, No. 2, 1968. EFFECTS OF ADVERTISING PASTEURIZED- REFRIGERATED PEACHES-Miller and Strain. Vol. 15, No. 3, 1968. MARKETING FACILITIES FOR ALABAMA SOYBEANS-Hurst. Vol. 15, No. 3, 1968. Ornamental Horticulture NATIVE PLANTS PROMISING FOR ROAD- SIDE LANDSCAPING-Orr and Bryce. Vol. 15, No. 3, 1968. Poultry Science DELAYING MATURITY IN BROILER BREED- ERS-Howes and Cottier. Vol. 15, No. 1, 1968. EFFECT OF CONTINUOUS FEEDING OF AFLATOXIN TO CHICKENS-Cottier, Moore, Diener, and Davis. Vol. 15, No. 3, 1968. Plant Diseases NEW FUNGICIDES FOR CONTROL OF PE- CAN SCAB IN ALABAMA-Diener, Latham, and Garrett. Vol. 15, No. 1, 1968. LEAF SCORCH-NEW OR OLD PEANUT DISEASE?-Lyle and Subirats. Vol. 15, No. 2, 1968. CULTURAL PRACTICES INFLUENCE PINE FUNGs--Kelley and Curl. Vol. 15, No. 3, 1968. Rural Sociology JOB PLANS OF ALABAMA FARM YOUTH- Dunkelberger, Driscoll and Thaxton. Vol. 15, No. 4, 1968. RURAL PEOPLE AWARE OF MEDICARE PROGRAM-Dunkelberger. Vol. 15, No. 4, 1968. Soil and Water Pests OVERWINTER SURVIVAL OF ROOT KNOT NEMATODES-Cairns and Johnson. Vol. 15, No. 1, 1968. NEMATODES IN ALABAMA WATER RE- SOURCEs-Cairns, Mercer, and Merritt. Vol. 15, No. 4, 1968. Weed Control PREPLANT HERBICIDES FOR SWEETPOTA- TOES-Johnson, Amling, Turner, and Hol- lingsworth. Vol. 15, No. 1, 1968. HERBICIDES FOR POSTEMERGENCE WEED CONTROL IN SOYBEANS-Buchanan and Thurlow. Vol. 15, No. 2, 1968. CAN HERBICIDES BE USED SAFELY EVERY YEAR?-Hiltbold and Buchanan. Vol. 15, No. 3, 1968. SICKLEPOD-SUCCESS STORY OF A WEED -Creel, Hoveland, and Buchanan. Vol. 15, No. 4, 1968. Wildlife SOIL FERTILITY AND COTTONTAIL RABBIT LITTER SIZE-Hill. Vol. 15, No. 4, 1968. Miscellaneous TOURISM-RECREATION POTENTIAL IN FOUR NORTHEASTERN ALABAMA COUNTIES-Dris- coll. Vol. 15, No. 1, 1968. AN ERA ENDS-KENNETH B. ROY-ORIG- INATING EDITOR OF HIGHLIGHTS-JOINS RE- TIRED RANKS-Stevenson. Vol. 15, No. 3, 1968. A HISTORY OF BOTANY AND PLANT PATH- OLOGY AT AUBURN UNIVERSITY-Lyle. Vol. 15, No. 4, 1968. INDEX TO ARTICLES PUBLISHED IN HIGH- LIGHTS OF AGRICULTURAL RESEARCH, 1967. Vol. 15, No. 1, 1968. EDUCATIONAL PLANS of FARM YOUTH J E. DUNKELBERGER L. S. DRISCOLL, anid S, S. THAXTOFI Departinettt at Agricultural Eroontrr attd Rural Socilogy i \ I I Ii ,i I IItt I i it it it tlit t Lt tI Ii tI Itt'ii ix jI i i II it I tt t iIIi t II lIi .I it I Iilo tit i t li l t li t t I I I "o I i I(it I i lli ]itt 1 ( 1 i Ii \t I I( it i ti t t I i t i i lit i I itl I Itx d I I ' Ii I\ I t I1it it iII, Ii I(i -[ it .111 lw I t 1x t\ I ) t i Iii .it I ,'tt A Study in Northeast Alabamao B(t\tx tud 11i it I Iitlilt' 1 11 lit i ll 111iii itt 1 1 ~ it ' I Io) lil it Ii it I t lIi it ,~ I 'i ( 1 1 111 Ii li I l I 4 i t Ii ( i it ix ( i -(, I I l ii11 i Itt Ix l i I lIi I l t x. I\ I I ) it I flt t I (di lIi xM 6 itt I Ii t il l] 1i t 1ii 1i 1i litq xxillii i I i ll, iI I Ii I Ix I it (i iii ) i (diii I Ii i xi I iti l i o i 111 I Desired Educational Goals titix \\xiii luut ,1 icIl tutu lttx i lii i'u ii (diil i ilt hlixilti l, ii \(v ii i PIi it( tii 11i \ xcioiiii d 'iw mi I )'W forll 11 It Iilti I II i ti ' oll I i n. 1.(, xii i l I lot I t lI ) I I c 1 111 i i tt e ii Ii Ii I I t111 i 1 1i li it lIi ii I I t iiI I i il I~ I ii I til t i,, 1 it f I ll pr iii it hl t it t ' l it 1)) i~il x'- i l Ii lot iii(t~ I it il h io_ it itt. d _l dlt i itto l til tin llp it I I i I i I I1' I1 I to t Ii I ' I toi Ii t I Ii i I Ii I I i/ liii I i lt i ( ] I i) I 11 11 1i t - I It P t ,t I~~~ I ti i xx I ) t I to I Ii Expected Educational Goals Il1 11w ii li i ih t t tf14 x I i i it Ii thc Iniii i ti t i l d i tt i ii ( Il it 1 liia \\(I(- x ti t I lt t Iti iii t il Ii \ itl (lk t ,uI . I - m IIt iI II I~ t i l it) t t I f 1 il 1 l xi i i it, tt ti 1 Itc il t I I it tI I( it I ii it III It (i lIx coII( I ;1.t 12 S 2 11) xiii i il I2 xx i )Ii Ii i f t 11 1i 11 it 11 12 1 i 1 . t I Ii ij 4 5Iii 1- xii it it l ii t l (I ill' ill11or )II 1 11.11I 25 Ii ~ 2 il ix 1114 li ( ) whw\tc i I t 1 w i il. ii -\I xx I( 0 1:) 1 12 : (i ll itt ili'd (' (i );I I itt x ( I Ii i I I t ill 1 li- it id 15.2 I i 1 2") h. 2 i.x itI x ft( li y It i iit ii ii t ii t i it u i jn (p c Ill it it ii .'i xx .~ 11 i*.iIt * Iiiiii ' t t tlt) 1 xx i ktilix i llt (h Ii til lit I t il dI 1.1 S I w Ii Ii it xx ii t iii 1 t I i It it'l t *' I t I x I I itt i 1 AGRICULTURAL EXPERIMENT STATION AUBURN UNIVERSITY AUBURN, ALABAMA 36830 E. V. Smith, Directo PUBLICATION-H'ighlights of Agricultural Research 2 69 1 OM POSTAGE PAID U.S. DEPARTMENT GF AGRICULTURE F w ( \11,)\ \l 1,[, \ \, , I 1 \to \1 ) ( ( I I i