IOESEATIC.1 -7i"SULTS FOR FLOT ME GROHEP.S Lilies, Chrysanthemums and 4s cell aneous Crops Horticulture Series No. 20, Agricultural Experiment Station Auburn University R. Dennis Rouse, Director 1!arch'.1974*. Auburn, Alabama CONTEIT TS page 1. Effect of Pre- and Post- Planting 1Miticide Treatments on Bulb Mites and Growth of E'aster Lily, Lilium longiflorum Thunb . . . . . . . . . 2. Growth Retardant Treatment. Evaluations on Japanese Georgia Easter Lilies . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 4 3. Germination of Salt and Boron Sensitive Seeds in Municipal Compost Media . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . 7 4. Effect of Various Growth Retardants on Christmas Cherry and Christmas Pepper . .. *.0. . . . . .I. t . . . . . . . .a.*. . .0. . ... . . . 10 5. An Evaluation of Rieger Elatior Begonias . . . . . . . . . . . . . . II 6. Boron Toxicity of Two Chrysanthemum Cultivars . . . . . . . . . . . . 13 7. Growth and Foliar Analysis of Two Chrysanthemum Cultivars Grownm in Two Soil Media . . . ........... . . o ........ . . 16 8. Fertilization of Potted Chrysanthemums with Several Dry-Form Fertili- zers plus Liquid Fertilization ....... .* .. . . . . ... 21 'ffect of Pre- and Post- Plantiner, T" ticide Treatments on rulb Mites and Groriyt of Easter Lily, Lilium lonaiflorum Thunb. 7M.ennethC , 'anderson, WTillis C.Martin, Jr., P. Frank cueen and lT:onalr. L. Shumacki' ?Tature of T-Tor~k Lirtel.. informiation is available in the literature on mites occurring on 71aster lily Liliumi lon florm Thamb.Mites have been found to be universal in occurrence in lily bulbs and revealed to destroy 15% to 20% of a bulb in shipping. Considerable confusion exists on the species of bulb mite involved, wr'hether mite invasion is of primary or secondary nature, and the value of safe and effective control measures. The present investigation considers the effect of several miticide treatmetis on mite infestations and growth of Georgia Easter lily. R-esults: Preplant bulT) dips (15 min) of formetanate-chlorphenamidine, disulfoton, sar1ex, dicofol, zinophos, and Dasanit, and postplant soil treatments of zinophos- phorate reduced . bulb mite, TEhizopzlyphus callae Oudemans, populations measured at flowering (Tal.les 1 and 2). Foliage injury was less on plants grown from bulbs treated with fornietanate-chilorphenamidine or plants receiving no soil treatment or a soil application of disulfoton. Soil applications of Dasanit, dimethoate, disulfoton, zinophos-phorate, and zinophos yielded plants with less root rot than untreated plants. Preplant-bulb dips of Dasanit, dimethoate, sarolex, or dicofol produced taller plants than untreated bulbs. Plants grown in zinophos treated soil wiere taller plants than either check: plants or plants receiving dimethoate or dasanit. Soil applications of liquid Dasanit produced plants with fewer flowers in this researc h: F. F. Smith and R. L. Smiley of USDA, ARS, Beltsville, Md., and . M. Patterson, Data Analyst, Auburn Univ. (statistir Table I. Effect of various preplant miticide bulb treatments on the mite control, pIant condition and grotith of flowering Easter lily Foliage Root condition Bulb Yt.* No. f lowers rot (cm.) per plant Formetanate 3 10., CcCalorphllenamd ine 6 0 TV (?J?-334 or Fundal) nT.Esulfoton '65.7 LC (Di-Syston) . . . . Sarolex 50 iT (Diazinon) ... ,*.. Dasanit 63 SC *0 0 a0 00 00 oresta a 5 25.....,. Denmeton 26.2 EC (Systox) .a, .a.0 Dirvethoate 26.7 'E.C (Cygon) 0 . a . a Z1-ectran 22.3 EC 40.. *~O 0 Pentac 50 T althion5 EC00aa a0a00 Chlorobenzilate 4 3C .. ?.aa aa O-yeetonnethyl 25A4 sc (T/,eta-.Syvstoz&2) Ohiqorphenamildine .35 UP(EP .333 or Carzol) Checc . , . . . . . . 0. 0 0 a Arami te15 TT a Cb 0.0.. 7 fl1 rg G.OfY 9.m7 3m1 G0,.3ef 2 ,344mag .. 3ef l.3inl 06 0 7 Sal CEde f 0 78ra1 l.Cdef 521mg, 2. 3cde lo3m1 2. 3.de 1 3-m1 2. 5bcd 2 .-l 2.5cd 5 21ng c 3.labc 1. Sm1 3.4abc 1. 3ra1 3 .2.abc l.3m1 3. V;ab c 781mg 4.3abc a-0 - 4 * 5ab 2,344mg 5.Oa T re atgent Conc. ner .1 co trol 0.5c 2. Gab 2. Gab 1. 3bc 2. Gab 2. 8a 2. 3ab I. 8ab 1. gab 2.Oab 3.GOa 2.5ab 2.* 8a l. 3bc 2. 3ab 1 8ab 2. 3ab I .Ocd o. 8cd o .3d G.5d o .8cd 0. Scd 3. 3a o .3d Oo 3d O .5d 2.Sabc, 1.Gced 2.0a-d 0.5d 1. 8a-d 2.GOa-d 2.8Ba 2. Sa 2. 6 a 2 .6a 3. 3a 1 . Sa 3.GOa 2.5a 2.Ga 3. Ga 2. Sa 2. 3a 2. 3a 2.Oa 3.Oa 2.%3 3 ..3a 47, 3abc 45. 5b c 51.9a 50.3a 49. 7ab 51. la 45.Obc 48. labc 51.3a 43. 3abc 44 .9bc 49 .labc 44.2 c 48 ,Gabc 45. qbc 45 .2bc 48. 6abc 5.9a 5.6a 5.9a 5. 7a 6 .2a 6. OGa 5. la 5 .6a 5.5a 4. 9a 6. Ga 5 .4a 6. Ga 5.6a 5. 3a 5. la 5.5a Z 7 atinng for r-ite control and plant condito:0lecletad5=vr or Y lanspaaioin columns, by Duncan's multiple rangre test at the 5% level. a o Table 2. Ef feet of various initicide soil treatments on the mitev'ontrol, plant condition and growth of f lowemring Easter lily Treatment Cone. aepe /tz Foliage Root iBulb t o lwr ml per 15 cm pot control condition rot (c. pepln Zinophos 15G and Phorate (Thimet) 7.5rO 000 w". am -1- ,g 01.3cY 3.8a' O05b 3*6a46a5Sb Dimethoate26.7EHC . .a a * .2.60 lO0m]..0. 8bc 3.8a 0.5b 3.Oa 5% .b Disulfoton l1OG (Di-Syston) . -2.lg l.lbc 2.8abc 0.5b 1.8a48.a .a Dasi-nit lOG . ..--- l7g l.4abc 3.Oab O.8b 3.4a 0Ob .a Dasinit 63 SC .0.. 0 .. .0.78 lO0mI 1. Sabc 2.Sabc O.5b 2.4a,, 8b56 Zinophos 4 EC & 0. .. 0..0.0.78 lO0ml 2.3abc l.8bc 0.8b 2.8a; 33 6Sb Zectran-22.3 EC 0 2. 60 0 lOMI 3.8a 2.Sabc 2.3ab 3.la49.a 6lb Disulfoton 65.7 ]EC (Di-syston) 0.73 lO0m]. 3 .lab 1I5C 1.8a 2.1 83a .b Check ............- --- 3. 8a 1.5c 3.3a 2SA 4.bG2b Oxydemeton-methyl 25.4 SC (Ileta-Systox-*R) 1.,30 100Ml.1.8a 2.5bc 2.3ab 3.1a4- .a 72 z Ratingfor mite control and plant condition: 0 = excellent and 5 g-verUy poor. Y 1i1ean separation, in colurms, by Duncan' s multiple range test at the 5% level. Publications: Sane-eison, K. C.,'U. C, Martin, Jr., 1. Frca-nk McQueen and of mitecides on Lilium longiflorum-Thunb. cv Georgia. Florist Review Ronald L. Shumack. 153: 19-20, 54. 19740 Effectiveness wm O, _..Q r A Growth Retardant Treatment Evaluations on Japanese Georgia Easter Lilies Kenneth C. Sanderson and illis C. Martin, Jr. Nature of Work: Pre-cooled Japanese Georgia Easter lily bulbs were potted into soil-peat-perlite media on December 27, 1971. Prior to planting, the medium was amended with 150 g limestone and 30 g superphosphate per bu. Pots were placed in a glasshouse at a minimum night temperature of 620 F. Upon the emergence of shoots on approximately January 11 and until February 11, the plants were lighted from 10 p.m. to 2 a.m. each night using cyclic lighting. On February 25, the growth retardants listed in Table 3 were initiated. A randomized complete block design was used in applying treatments to 10 plants in 2 replications. Plant height and number of flowers per plant was recorded at flowering. Results: CEPA treatments of 200 ppm and 100 ppm caused abortion of lily buds and records were not taken on height and flower number for these treatments. CEPA is an effective retardant on Japanese Georgia Easter lily and might be used in situations where flower buds are undesirable, e.g. bulb production. Ancymidol drenched plants exhibited stem weakening and several plant stems snapped off in handling. Ancymidol and 100 ppm CEPA drenched plants exhibited the greatest height reduction (Table 4). At the concentrations used in this experiment, CBBP every 2 weeks, NIA 10637 sprays and DPX 1820 spray had very little effect on lily height. The most number of flowers per plant was observed on plants treated with 125 - 150 ppm ancymidol sprays (Table 4). Severe reduction in flower number occurred with 100 ppm CEPA drenches and 1000 ppm NIA 10637 spray. Publications: None. Table 3. Growth retardant treatments used on Japanese Georgia Easter Lilies. ERetardantZ Application Amount Concentration (ppm) Check CEPA CEPA GE P? Ancymidol Ancymidol Ancymidol Ancymnidol Ancymidol Ancymidol Ancymidol Ancymidol Ancymidol II'IA 10637 INIA 10637 NIlA 10637 DPX 1820 Singl Single Single Single Drench Single Single Single Drench Single Single drench drench drench drench every 2 weeks drench 240m1 drench 240m1 drench 240m1 drench 240m1 every 2- weeks spray spray 240m1 240m1 2 40mi1 2 40n1 240n1 240mn1 240m?1 240mn1 240mn1 ~~4*4 ~cc~qr Spray 2 applications 2 weeks apart Single spray Single spray Single spray Single spray Treatment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 100 2 00 400 700 230 2 4 6 8 2 100 125 150 200 50 250 500 1,000 1,250 Z Retardants were CEPA (Anchem's Etherel(R0 or ethephon), Ancymidol (Eli Lily's A-Rest(R), NIA 10637 (Niagara Chemical's experimental material) and DPX- 1820 (Dupont's experimental material). I IVII~~UPI I~ UUI~I) IIQI DCU LIII U~DUWYIOWnlOU) iiPm' I YWYI~~ U1(C~MLU II1~YIOI 6 Table 4. Effect of various growth retardant treatments on lily height and floTer number Treatmentz It(cm) No. flowers per plant None 54.9 2.8 100 ppm CEPA drench 36.2 1.7 200 ppm CEPA drench 400 ppm CEPA drench 700 ppm CBBP drench every 43.6 3o2 230 ppm CBBP drench every 2 wyk 49.9 3.1 2 ppm Ancymidol drench 38.3 3.0 4 ppm Ancymidol drench 28.9 2.9 6 ppm Ancymidol drench 28.2 2.8 8 ppm Ancymidol drench 26.5 2.5 2 ppm Ancymidol drench every 2 wk 31.2 3.1 100 ppm Ancymidol spray 47.3 2,9 125 ppm Ancymidol spray 47.2 3.5 150 ppm Ancymidol spray 46.7 3.3 200 ppm Ancymido- spray 42.6 3.4 50 ppm Ancymidol spray 2 applications 47.5 2.7 250 ppm NIA 10637 50.5 3.0 500 ppm NIA 10637 48.1 2.8 1,000ppm NIA 10637 49.5 1.9 1,250 ppm DPX 1820 53.1 3.0 Z Retardants were CEPA (Amchen's Etherel(R) or ethephon) Ancymidol (Eli Lily' s A-Rest(R)), NIA 10637 (Niagara Chemical's experimental material) and DPX 1820 (Dupont's experimental material). Publications: None. Germination of Salt and Boron Sensitive Seeds in Municipal Compost Media Kenneth C. Sanderson Nature of Work: M unicipal compost which had been treated with (Sewage Com- post) and without raw sewage (Mobile Aid) prior to 12-16 weeks composting was compared with imported German peat moss as a germination media. Compost consisted of ground paper, metal, plastic and assorted trash of the City of Mobile, Alabama. Previous work revealed the compost to contain considerable boron and heavy metals and have a high p which was resistant to change and high soluble salts. Ten seeds of vegetables selected with reference to salt and boron tolerance were so~r in the following pasteurized media: (i) Sewage Compost, (2) Mobile Aid, (3) Sewage Compost and Sand, (4) Mobile Aid and Sand, (5) Sphagnum Peat oss and Sand, (6) Sexwtage Compost and Soil, (7) Mobile Aid and Soil, (8) Sphagnum Peat Moss and Soil. Germination was carried out in a greenhouse using mist and a night temperature of 700 F. Weekly records were taken on germination for 6 weeks after sowing. Results: SeTage-compost and Mobile Aid compost did not influence the germi- nation of vegetable species with various degrees of salt tolerance (Table 5). Rutgers tomato had poor germination in sewage-compost and Mobile Aid compost; however, peat and sand yielded much poorer germination not only with tomato but also with cabbage and radish. Considering boron tolerance, germination was more adversely affected by peat anid sand media than sewage-compost or Mobile Aid compost (Table 6); however, navy bean, a boron sensitive plant, had the poorest germination in Mobile Aid compost (Tables 6 and 7). Generally, the growth of all seedlings was best in sewage-compost or Mobile Aid and soil. Publications: None, Table 5. Influence of sewage-compost, lMobile Aid compost.- and peat.-amended media on the germination percentage of vegetable species w,,ith relative salt tolerancel' Salt Tolerance Kale 'Blue Curled Scotch Tomato 'Rutgers 'tedium Tomato Cabbage Dv V Tiny 'Marioe Time Market' % Germination Sewage-compost .... a........ 86132 92 94 96 Mobile Aid compost . .0 . .... .*96 70 92 96 3 Sewage-compost and sand .0.. . . ...0 96 92 98 84 98 Mobile Aid compost and sand ...... 92 92 32 96 92 Peat andsand,.0 .,0 ............. 82 68 80 74 78 Sewage-com-post and soil ... ,. 96 72 96 80 80 Mobile Aid compost garbage and soil 04. 98 84 90 90 90 Peat and sol . 96 80 83 84 92 -Relative salt tolerance from. a list prepared by Berg, C. Vande. 1950. The Influence of Salt in the Soil on the Yield of Agricultural Crops. Fourth International Congress Soil Science. Trans. 1-411-413. Table 6. Influence of seTiage-coinipost, Mobile Aid compost.- and peat-amended media on germjlqation percentage of boron tolerant and sensitive vegetable species- Media T ole rant Sensitive Broadbean Cabbage Iflavy Bean vLong Pod Fava 'Marion Market' 'Vnite Narroyf at' % Germination Sewage-compost * * . . . . 30 94 92 Mobile-Aid compost..........84 96 88 Sewage-compost anLid sand .... 56 84 98 M1obile Aid compost and sand G a 64 96 92 Peat and sand ...00 .06 .0 ..0 44 74 98 Sewage-compost and soil. . 60 80 100 Mobile--Aid and soil'.... 72 90 98 Peat and soi . . , . . 60 84 92 Relative tolerance determ-ined by Eaton, F. 14. 1935. Boron in Soils and Irrigation Water and Its Effects on Plants with Particular Reference to San Joaquin Valley of California. U. S. Dept. Agr. Tech. Bull. 448. 131 pp.* Media Low Radish 'Cherry Belle --- ---- -- -- -- -- 9 Table 7. Influence of Garbage-Sludge-, Garbage and Peat-Amended Media on the Germination of Semitolerant Boron Speciesl / Sun floter Tomato Tomato Radish Lima Bean 'Hammouth Rutgers' 'Tiny 'Cherry 'Fordhook' Russian' Tim' Belle' % Germination Garbage-sludge . ... 72 82 92 96 96 Garbage ........ 74 70 92 88 88 Garbage-sludge-and sand . 92 92 98 98 88 Garbage and sand ..... 80 92 82 92 100 Peat and sand ... ... 52 68 80 78 94 Garbage-sludge and soil . 80 72 96 80 94 Garbage and soil . . . . . 94 84 90 90 82 Peat and soil ...... 76 80 88 92 90 Pelative tolerance from a list prepared by Eaton, F. 1. 1935. Boron in Soils and Irrigation Water and Its Effects on Plants with Particular Reference to the San Joaquin Valley of California. U. S. Dept. Agr. Tech. Bull. 448, 131 pp. 10 Effect of Various Growth Retardants on Christmas Cherry and Christmas Pepper Kenneth C. Sanderson and Willis C. Martin, Jr. Nature of Work: Christmas cherry, Solanum pseudo-capsicum and Christmas pepper, Capsicum frutescens plants in 15 cm pots were treated on August 10 with the following retardants: (1) none, (2) 5,000 ppm SAD-I (B-Nine) spray, (3) 100 ppm Ancymidol (AORest) spray, (4) 200 ppm Ethephon drench, (5) 1,679 ppm Chlormequat (Cycocel) spray, (6) 3,358 ppm Chlormequat drench and (7) 729 ppm CBBP (Phosfon) drench. Drenches were applied at the rate of 180 ml of solution per 15 cm pot. Five drops of surfactant were added to all sprays except SADH prior to spraying until runoff. Results: None of the retardant treatments used had any effect on the height, flowering, fruiting or appearance of Christmas cherries or Christmas peppers. Publications: None. 11 An Evaluation of Rieger Elatior Begonias Kenneth C. Sanderson and Willis C. Martin, Jr. Nature of Work: Rieger elatior begonias were hybridized and developed by the firm of Otto Rieger, Nurtingen, Germany. Plants used in this experiment to determine if they could be produced. in Alabama were furnished by 4ikkelsens, Inc. Tho hundred 5.6 cm pots of 7 cultivars of Rieger begonias were potted into 15 cm pots on August 7, 1971. Cultivars used included: Aphrodite Cherry Red, Aphrodite Red, Aphrodite Rose, Aphrodite Pink, Schwabenland Orange, Schwabenland Pink, and Schwabenland Red. Potting media consisted of 1.1:1:3 soil, sphagnum peat moss, perlite and Jiffy-Mix (a commercial peat-lite mix consisting of peat moss and vermiculite). The pH of the media was near 5.5, so no adjustment was made. Osmocote 14-14-14 was added to the media prior to potting at the rate of 1.6 kg per m 3 . Fertilization also consisted of 20-20-20 liquid applied every 2 weeks at the rate 227 g per 379 &. The plants were grown in a lightly shaded, air-cooled greenhouse. Later in the crop the cooling system was found to contribute to the disease problem so cooling was restricted to the daylight hours; however, the fans were permitted to operate continuously. A Chapin water system was employed in watering to minimize disease. The plants were drenched'with 227 g per 379 Z each of Dexon and Benlate at potting and on October 7. A Benlate spray was applied on October 14. Biotrol was used as a spray for worms on September 2. Plants were covered with black cloth daily, 4:30 p.m. to 7:30 a.m., starting on September 20 and ending on October 20. The black cloth was used to shorten plant growth and to develop uniform flowering. Results: Plants were in flower and in a salable condition on October 25. Approximately 10 weeks growing time was required to produce this crop. This 12 amount of growing time is less than that required for most chrysanthemums or other major flowering pot plants grown in Alabama. The high initial cost of Reiger elatior begonias (49 to 56 cents each) is probably more than com- pensated for by this short term in the greenhouse and high wholesale price (other begonias selling for $2.00 - $2.50 do not compare in quality). Foliage diseases, especially mildew and botrytis, were production prob- lems. Early in the growth of the plants, mildew appeared to be spotting the leaves; however, black sunken areas were noted later on some leaves and identified as being caused by botrytis. The two flowering groups grown in this experiment were Aphrodite and Schwabenland. The Aphrodite plants had heart-shaped dark green foliage, full double azalea-like blooms, and generally were taller than the Schwabenland plants. Aphrodite Red and Rose were quite similar in color; however, petals of flowers on the Red showed some fading with age. Aphrodite Cherry Red was a more brilliant red than the other Aphrodites. Aphrodite Pink produced lighter green foliage, which appeared less susceptible to disease than the other Aphrodites. Growth of Aphrodite Pink is not as strong or upright as the other Aphrodites (the Pink is probably recommended for hanging baskets for this reason). Schwabenland plants were heavier stemmed, stronger and more erect growing than the Aphrodites. Flowers wTere semi-double with a yellow eye. Foliage was similar to the Aphrodites. Publications: None. 13 Boron Toxicity of Two Chrysanthemum Cultivars G, Jay Gogue and Kenneth C. Sanderson Nature of Work: The purpose of this research was: (1) to determine the foliar boron content of two chrysanthemum cultivars when B was added to the media in various amounts, (2) to establish toxic foliar levels and (3) to study the effects of B addition on growth. Concentrations of B ranging from 13 ppm to 800 ppm were applied (100 ml per 15 cm pot) to the media of the chrysanthemum cultivars Improved Albatross and CF No. 2 Good News. Results: Element content and growth was influenced by B addition. Increases in B concentration applied generally increased foliar B (Fig. 1). Seasonal variation was observed in injury time with toxicity symptoms appearing sooner in an April to May experiment than in a December to March experiment and in foliar toxic levels. Boron toxicity symptoms were observed at foliar levels of 236 ppm in Improved Albatross and 350 ppm in CF No. 2 Good News 4 days after B application in an April to Nay experiment, while 7 to 28 days were required to produce symptoms at foliar levels of 159 ppm in Improved Albatross and 144 ppm in CF No. 2 Good News in a December to March experiment. Foliar N, P, K, and Zn content increased with increases in B concentration applied. Length and weight of flowering stems and diameter and dry weight of flowers decreased with increases in B concentration applied (Table 9). Foliar B levels exceeding 100 ppm reduced growth. Publications: Gogue, G. J. 1970. Boron, sodium and zinc tolerance of chrysanthemums grown in processed garbage amended media. Masters thesis, Auburn Univ., Auburn, Ala. 116 p. Gogue, G. J. and K. C. Sanderson. 1973. Boron tolerance of Chrysanthemum morifolium Ramat. Hdrthiehce B ... i C8: 1./ Former graduate student and Associate Professor respectively.Agr. Exp. Sta. Auburn Univ. Auburn, Alabama. Dr. Gogue's present address: Ecological Services, Hiss. Test Station, Dept. of Interior Bay, St. Louis, MS. 14 1000 900 800 700 600 500 400oo 300 200 BORON APPLIED PPM Fig. 1. Foliar B conc. of two chrysanthemum cultivars treated with a single B application. * Improved Albatross 0O CF2 Good News --- Dec.- Mar. Experiment -. Apr.- May Experiment CL CL 1. Z 0 0 m 100 15 Table 9. Mlean flowering stem length and flower diameter of chrysanthemums treated with boroix Growth D~ata B3 Treatments (ppm 0 100 200 400 800 Stem lengvth (cmi)0* 52.5aZ 46.9ab 4 1. 4ab 35.lab 26*Ob Flower diam. (cm) 11l.8a -1.2a 10.lalbc 9.Obcd 7o3d Z 'Mean separation, in ro-Ts, by Duncan's multiple range test, 5% level 0 16 Growth and Foliar Analysis of Two Chrysanthemum Cultivars Grown in Two Soil Media G. Jay Gogue and K. C. Sanderson / Nature of Work: Chrysanthemums, cv. 'Improved Albatross' and cv. 'CF No. 2 Good News' were grown in two media: 1:1 soil and peat and 1:1:1 soil, per- lite and peat. Both media were adjusted to a pH of 6.0 with either CaCO 3 or So Gypsum and Superphosphate were added to the adjusted media at the rate of 28.4g/23 k and 56.7 g per 23 Z, respectively. Beginning I week after plant- ing and continuing until flowering, a constant fertilization program of 200 ppm N, P, and K (from reagent grade chemicals) was applied at each watering. The growth and foliar N, P, K, Ca, Mg, Mn, Cu, Al, B, Na, and Zn were examined with leaf samples being taken 1 week after the end of vegetative lighting period at approximately the fifth or sixth node. Results: No differences were observed in the fresh weight and length to the two media (Tables 10 and 11). Foliar N, P, Mg, Fe, Cu, and Na content of the two cultivars was similar in both media. Both cultivars absorbed more Ca when grown in soil, perlite and peat (Table 12). 'Improved Albatross' accumulated more K, Mn, Al, B, and Zn when grown in soil, perlite and peat than when gromwn in soil and peat. The foliar values for the 12 elements are not in complete agreement with those reported by other researchers but are believed to be a useful measure of "optimum" mineral content. Publications: G. J. Gogue. 1970. Boron, sodium and zinc tolerance of chrysanthemums grown in processed garbage amended media. Masters' Thesis, Auburn University, Auburn, Ala. 116 p. Gogue, G. J. and K. C. Sanderson. 1973. Foliar analysis of two chrysanthemum cultivars grown in two soil media. Florist Review 153: 63-65. 1/ Former graduate student and Associate Professor, respectively, Agr. Exp. Sta. Auburn Univ. Auburn, Ala. Dr. Gogue's present address: Ecological Services, Miss. Test Sta., Dept. of Interior, Bay St. Louis, MS. 17 Table 10. Growth and foliar nutrient concentration of chrysanthemum grown in 2 media Measurement Media Growth data -Soil and eat Soil pat and perlite Flowering stem fresh wt. (g) ... 66aA' 42b Flower dry wt. (g). ...... 17a 14b Stem length (cm)............84a 62b Flower diameter (cm) .. . . .13a l2b Foliar concentration 11% 0 0 0 * a a 0 0 a 5.5a4,,8b P% ......................... a .0.7a 0.5b K . . . . 0 # ..1. .a .0 . 5e4b 7.2b Ca%...........0 .a 0*0*ID 0 a * .0l.Ob 1.3a .............. 0.4a 0.2b Mn ppm.............296a 318a Fe ppm 9 0 Q 0 0 0 0 101a 98a Cu PPM...a... 39b 54a Al pp m....a..o1.63b 240a B ppm *a.to . . 0 a .0 . 0 . a 103b 191a Na ppm..............301b 522a Zn ppm.................67b 129a MenZepraio, -n7os, by Duncan's multiple range test, 5% level. 18 Table 11. Effect of media on flowering stem fresh weight, flower dry weight, stem length, and flower diameter of 2 chrysanthemum cultivars Media, ! Growth data Flowering stem Flower dry Stem Flower fresh wt. (g) wt. (g) length (cm) diam. (cm) mp edAlbatross SPtp.... CF No. 2 Good N~ews SP . SPtp. . 82.89a2/ 80. 30a S. 105.27a 110009a Media were: SP) 11 Soil:Peat and SPtP) 1:1: 1 V'Means separations, separations for cultivar in r ange at the 5% level. SoilPerlite:Peat. columns, by Duncan' s multiple 2.98a 3.17a 3. 82a 3.76a 76.38a 59.6 8b 93. 48a 93. 73a 110 a 11. 38a 15. 15 a 15 .53a s o 19 Table 12. Foliar N, P, K, Ca, Mg, Mn, Fe, Cu, Al, B, Na, and Zn concentration of 2 chrysanthemum cultivars grown in amended media Elements Medial/ Cultivars Improved Albatross CF No. 2 Good News N (%) SP 5.S2aYJ 5.37a SPtP 5.28a 5.28a P (%) SP .68a .75a SPtP .69a .77a K (%) SP 5.28b 6.15a SPtP 6.24a 6.27a Ca (%) SP .78b l.21b SPtP .99a 1.38a Mg (%) SP .32a .51a SPtP .32a .51a Mn (ppm) SP 252.Ob 340.5a SPtP 282.Oa 361.5a Fe (ppm) SP 102.Oa 100.Oa SPtP 106.Oa 103.2a Cu (ppm) SP 41.5a 37.Oa SPtP 37.2a 32.7a Al (ppm) SP 155.5b 181.Oa SPtP 217.5a 200.Oa 20 Table 12. (cont'd) Elements B (ppm) Na (ppm) Zn (ppm) Media;:- Gui tivars Improved Albatross CF No. 2 Good News SP SptP SP SF U? SP sptP 100.5b 130.2 a 346,Oa 415.Oa 75 a7b 65.7a 104.7a 103.7a 306. Oa 294 .Oa 57.5a 57.2a Mfedia were: SP) l1:1 Soil:Peat and SPtP) 1:1:1 Soil:Ferlite:Feate Means separation, in columns, by Duncan's multiple range test at the 5% level. Z : 22 Fertilization of Potted Chrysanthemums with Several Dry-Form Fertilizers-plus Liquid Fertilization Kenneth C. Sanderson and Willis C. Martin, Jr. Nature of Work: Previous years' research indicated that two urea-form fertilizers plus liquid fertilization yielded plants with the most flowers. Three experiments were conducted in 1971 to test four urea-form fertilizers and three non-urea-form fertilizers. All fertilizers were used in conjunc- tion with applications of 25-10-10 at the 2-1/2 lb. per 100 gal. every 2 weeks. Fertilizer treatments incorporated prior to planting were: (1) check, none; (2) 12 g Agriform tablet (14-4-6) per pot; (3) Nitroform Urea (38-0-0) 88 g per 23 k; (4) Sta-Green (12-6-6) 264 g per 23 Z; (5) Sulfur-coated urea (38.6-0-0) 88 g per 23 t; (6) Osmocote (14-14-14) 264 g per 23 k; (7) 8-8-8, 339 g per 23 A; (8) Mag-Amp (7-40-6) 339 g per 23 . Media consisted of 1:1:1 soil, peat and perlite amended with 200 g of limestone and 60 g of superphosphate per 23 X. Five cuttings of the cultivar 'Yellow Mandalay' were potted in a 15 cm pot. Experiments 1, 2, and 3 were conducted during February 17 to May 6; March 2 to May 25; and March 16 to June 9, respectively. Results: Osmocote, a non-urea fertilizer produced the tallest plants; however, sulfur-coated urea plants were only a centimeter less in height (Table 13). The check yielded the shortest plants and the fewest flowers per plant. Osmocote, the best treatment, produced 1.7 more flowers per plant than the check treatment. These experiments differ from previous work. Differences might be due to unequal amounts of nitrogen applied and a different rate of breakdown of urea in previous experiments. Publications: None. 22 Table 13. Height and number of flowers per plant of Yellow Mandalay Chrysanthemums Fertilized with Various Dry-Form Fertilizers Plus Liquid Fertilization (2 lb. 25-10-10 every 2 weeks) Treatment Height Number of flowers (cm) per plant Check ........... . . . 26.5 3.7 12g Agriform tablet 14-4-6 . . 28.7 4.7 Nitroform Urea 38-0-0 . . . . . 27.8 4.3 Sta-Green 12-6-6 . . . . . . . 27.8 4.5 Sulfur-coated Urea 38-0-0 . . . 30.2 4.4 Osmocote 14-14-14 . . . . . . . 31.1 5.4 8-8-8 .... ............. .. 28.2 4.9 Mag-Amp 7-40-6 . . . . . . . . 29.7 5.1