LEAFLET 72 OCTOBER 1966 Performance or Pelach larieties for Commercial Produltion in ICentral Alabaia Agricultural Experiment Station AUBURN UNIVERSITY E. V. Smith, Director Auburn, Alabama -AIL- 6 V Performance of Peach Varieties for Commercial Production in Central Alabama C. C. CARLTON and K. C. SHORT, Chilton Area Horticulture Substation H. J. AMLING and W. A. DOZIER, JR., Department of Horticulture PEACH PRODUCTION in central Alabama reached an all-time high of 80.,000 trees in 1968. Since then peach plantings have dropped to 400,000 trees, and more will be removed in the fall of 1966. Several factors have caused the re- duced acreage of peach trees. Some growers stated they were unable to make a profit from commercial peach produc- tion, whereas others blame a shortage of farm labor. During some periods of the harvest season, there have been more peaches offered on the local markets than would be consumed at a price profitable to growers. Peach growers who ship out of state find heavy market competition from other Southeastern States. The resulting reduction in price discourages out-of- state shipment. Adverse weather seriously affects pro- duction of peaches. Lack of chilling, ex- cessive rainfall during critical periods, extremely low temperatures during win- ter, heavy frost during early fruit de- velopment, and hail and wind storms are common causes of crop losses. VARIETY PERFORMANCE UNDER VARIOUS CLIMATIC CONDITIONS Since varieties vary in terms of their ability to withstand adverse weather con- ditions, the variety testing project at the Chilton Area Horticulture Substation Clanton, has been used to evaluate test varieties on the basis of how they are af- fected by climatic conditions. This publi- cation summarizes results of this evalua- tion during the 1963-66 test years. 1963 Results In 1963, accumulated hours below 45?F. reached 1,408 by February 15. A low of 0 on January 24 accounted for extensive dormant bud kill. Additional bud kill may have occurred from the 11 and 15' lows of February 22 and 27, re- spectively. The approximately 10 inches of rainfall in the last half of June, during harvest period, made disease control dif- ficult. Performance of peach varieties un- der such climatic conditions is given in Table 1. 1964 Results Accumulated hours below 45'F. to- taled 1,419 by February 15, 1964. Low temperatures that may have affected bud survival occurred on December 16 and 19 (11' and 14', respectively), 14' on January 15, and 26' after bloom on March 30. One-third of the fruit was damaged by hail on April 28. Only 0.69 inch of rain fell during May. On June 21, hail again damaged 95 per cent of the [2] TABLE 1. 1963 RATINGS OF PEACH VARIETY PERFORMANCEO Pet. Date Date live Variety of of Fruit Skin Flesh Stone Flesh Dessert Yield buds Variety full first size color color free- f irm- Dessert Yield budsafter bloom harvest ness ness Jan. 24 freeze Springtime- 3-22 5-12 6 8 W 0 Cardinal 3-22 5-24 8 9 Y 2 Hiland 3-18 no fruit because of freeze Dixired.-- 3-22 5-29 8 9 Y 1 Redcap----- 3-20 5-24 9 8 Y 4 5 6 4 10 9 9 3 21 0 2 9 8 10 38 9 9 3 12 Coronet........ 3-18 no fruit because of freeze 0 1 Sentinel (FV 173-47) 3-20 6-21 6 9 Y 9 9 9 8 10 Regina 3-20 6-21 6 9 Y 9 9 9 10 37 Ranger --------- 3-22 6-21 9 9 Y 10 8 10 10 38 Keystone 3-18 6-21 10 8 Y 10 10 9 2 5 Redglobe 3-20 6-28 9 9 Y 10 10 8 10 20 Blake------ 3-22 7-3 8 10 Y 10 10 9 10 20 Redskin---- 3-18 7-10 8 9 Y 10 10 9 10 42 Dixiland---- 3-18 7-10 10 8 Y 10 10 9 4 23 Alred Elberta.. 3-19 7-10 10 10 Y 10 10 9 10 25 Regular Elberta.. 3-18 7-10 10 8 Y 10 9 9 10 33 Rio-Oso- Gem----- 3-20 7-22 10 8 Y 10 10 9 10 36 * Rating: 0 - poor, 10 = excellent. TABLE 2. 1964 RATINGS OF PEACH VARIETY PERFORMANCEO Variety Springtime Cardinal Hiland Dixired Redcap Coronet Sentinel (FV 173-47) .. Regina- Ranger- Keystone Redglobe Washington .... Redtop Dixiland Blake Redskin Aired Elberta Regular Elberta. Rio-Oso-Gernm Date Date of of Fruit Skin Flesh Stone Flesh DessertYield full first size color color ness ness quality ield bloom harvest ness ness 3-20 5-10 6 8 W 0 5 6 2 3-22 6-3 8 9 Y 2 9 9 5 3-20 no fruit because of dormant freeze, trees removed 3-24 6-8 8 9 Y 1 9 8 10 3-22 6-8 8 9 Y 2 9 9 5 3-20 no fruit because of low temperatures, trees removed 3-21 6-11 10 8 Y 8 9 9 4 3-19 6-25 6 9 Y 9 9 9 3 3-24 6-24 9 9 Y 10 8 10 10 38-22 6-17 10 9 Y 8 7 8 2 3-22 almost no fruit because of low temperatures 3-21 7-4 10 9 Y 10 9 10 2 3-20 7-4 8 9 Y 9 9 9 9 3-19 7-12 10 9 Y 10 1 9 2 3-22 7-17 10 9 Y 10 10 9 9 3-16 little fruit because of cold damage 3-20 7-17 10 10 Y 10 9 9 2 3-20 7-17 10 8 Y 10 9 9 2 3-22 7-24 10 9 Y 10 10 9 9 * Rating: 0 . poor, 10 excellent. fruit as well as cracking the bark on the trees. Crop results following this weather pattern are presented in Table 2. 1965 Results By February 15, 1965, the accumu- lated hours below 45 0 F. amounted to 1,156. Low temperatures of 11' caused some bud damage on January 17 and 31. Some damage to blooms that were open resulted from lows of 25%, 220, and 280, respectively, on March 20, 21, and 22. These temperatures also killed some flower buds on susceptible varieties that were in the bud swell stage. April and May were dry months, having 1.56 and 0.51 inches of rainfall, respectively. In contrast, June and July were wet months with 9.24 and 6.99 inches of rain, re- spectively. Variety performance under these conditions is presented in Table 3. 1966 Results The warm winter of 1965-66 had barely enough chilling for some varieties. Accumulated hours below 45'F. were 453 on January 1; 605 by January 15; 985 on February 1; and reached 1,109 by February 15. On January 30 the temperature dropped to 0', killing many fruit buds in the dormant stage. A low of 11 was re- corded the following day, January 31. On March 25 a frost and a low of 27' occurred while peaches were in bloom. This further thinned fruit of varieties that were damaged by the January 30 freeze. Variety ratings resulting from TABLE 3. 1965 RATINGS OF PEACH VARIETY PERFORMANCE Date Variet of Variety full bloom Date of- first harvest Fruit Skin Flesh Stone size color color ness ness Flesh Dessert firmness quality .t~'S ness Yield Cold damage 5-17 3-29 5-20 4-2 6-2 4-2 6-7 3-30 6-7 4-1 6-16 4-2 6-18 3-29 6-18 3-29 6-21 4-2 6-23 4-2 6-30 3-29 6-30 3-30 6-30 3 8 W 0 4 4 10 none 3 9 8 Y Y Y It~y hey 10 9 9 10 8 10 9 8 Y 2 9 9 10 none 8 7 Y 10 9 8 6 medium 9 9 Y 9 8 9 10 none 7 8 Y 9 9 8 7 medium 10 9 10 5 9 3-29 7-5 9 4-2 7-12 9 7-12 10 3-30 7-12 10 3-28 7-15 8 4-1 7-15 9 4-2 7-21 8 9 8 9 10 9 Y Y Y Y Y 9 9 10 10 10 8 9 9 10 10 9 9 9 9 10 9 10 10 10 10 8 Y 10 9 9 9 light 8 Y 10 10 10 10 none 10 Y 10 9 9 10 none 8 10 8 7 10 10 10 10 10 9 10 9 10 10 9 10 4-2 7-24 8 8 Y 10 9 9 10 none * Rating: 0 poor, 10 excellent. E 4 1 3-30 none light none Springtime . Springold (FV 9-149) Cardinal Dixired .... Redcap .... Royalvee ... Sentinel (FV 193-47) Regina ----- Keystone Ranger ..... Washington- Redtop .... Redglobe .. Loring (S) Blake Alred Elberta .. Regular Elberta Redskin .... Dixiland --- Jefferson Rio-Oso- Gem .... 4-2 light none none none none none none light none nn .L.LCLJL Vr TABLE- 4. 1966 RATINGS OF PEACH VARIETY PERFORMANCE* Date Variety of Vrey full bloom Date of first harvest Fruit Skin Flesh fre size color color nree- 3-24 5-21 3 3-23 5-21 8 4-2 5-28 8 4-2 6-2 9 3-25 3-24 3-23 3-24 3-22 3-21 3-24 3-22 3-23 3-23 6-6 6-1 6-11 6-13 6-17 6-20 6-22 6-27 6-28 6-28 8 8 9 8 10 10 8 9 10 10 Springtime Springold (FV 9-149) Earlired Cardinal Dixired Redcap Sentinel Royalvee Regina Keystone Ranger Redtop ----- Washington- Redglobe --- Loring (5) Blake------ Redskin ---- Aired Elberta-- Dixiland---- Jefferson---- Regular Elberta Rio-Oso- Gem ----- 9 W17~~5 0 5 315.5 8 9 9 8 9 7 9 9 8 8 10 9 9 8 8 9 9 8 7 y y y y y y y y y y y y y y y y y y y 0 0 1 2 0 5 3 9 9 9 9 10 10 10 10 10 10 10 10 8 8 9 8 9 9 9 10 8 8 10 9 9 8 9 9 9 9 8 8 9 9 9 9 9 9 9 10 9 9 10 9 9 9 9 10 10 9 8 8 8 10 5 5 10 9 1 10 9 5 2 2 9 10 9 9 6 9.0 15.6 12.3 57.8 8.6 18.8 30.1 19.1 5.2 45.0 26.3 15.0 12.5 12.2 49.4 33.3 26.8 23.8 9.9 8 y 10 8 10 10 24.6 3-23 7-30 10 8 y 10 10 9 6 16.1 'Ratinig: 0 poor, 10 such climatic conditions in Table 4. excellent. are presented VARIETIES SUGGESTED FOR COMMERCIAL PLANTING IN CENTRAL ALABAMA Central Alabama peach growers har vested about a 35 to 40 per cent crop in 1966 following an unfavorable season. Based on results reported, a 75 to 80 per cent crop could have been produced if growers had had the following varie- ties in production: Springold, Earlired, Cardinal, Dixired, Redcap, Sentinel, Red- haven, Royalvee, Regina, Ranger, Red- top, Washington, Loring, Blake, Redskin, Dixiland, Aired Elberta, and Rio-Oso- Gem. These varieties performed well de- spite a warm winter, a hard freeze on January 30, and frosts during bloom. Springold, FV89-14 X Springtime, was tested as FV9-149 and named in 1966 by the USDA Field Station, Fort Valley, Georgia. Springold ripens about 3 days after Springtime or about 2 weeks before Cardinal. The fruit is round with a slight tip, small, with light pubescence. About 80 per cent of surface is covered with a bright, attractive, red blush over a yel- low ground color. The flesh is yellow, firm but melting, medium in texture, and good in flavor for an early peach. It is relatively susceptible to bacterial spot disease. It requires about 850 hours be- low 45'F. to satisfy each chilling re- quirement. [5] Flesh firm- ness Dessert Yie qualityYil Pet. live buds after Jan. 30 freeze 3-21 7-9 10 3-24 7-18 9 3-22 7-18 8 3-22 7-18 9 3-23 7-20 10 3-23 7-20 10 3-21 7-22 8 Earlired, Redhaven X B3-674 (Hale- haven X B3293 [Halehaven X Oriole]) ripens 3 days before Cardinal. It was re- leased by the USDA from Beltsville, Maryland, in 1960. Earlired trees are vigorous and highly productive. The fruit is ovate with a slightly enlarged suture and tip, but ripens firmly about 7 weeks before Elberta. It requires 850 hours chilling. Cardinal, Halehaven selfed, was intro- duced by the USDA Field Station, Fort Valley, in 1951. Cardinal ripens 61/2 weeks before Elberta and about 4 days before Dixired. Fruit is yellow fleshed, small, clingstone, well colored, and is fairly firm at shipping maturity. Trees are productive and moderately vigorous. Cardinal is recommended for planting with Hiland. In mild winters Cardinal may exhibit prolonged dormancy, since its 900-hour chilling requirement is higher than for Hiland. Dixired, Halehaven selfed, was named and introduced in 1945 by the USDA Field Station, Fort Valley. It is the most widely planted early maturing peach. Shipping maturity is 6 weeks before El- berta. Trees are vigorous and productive, but fruits tend to be small in some years unless thinned heavily. Often Dixired fruit will not average 2 inches in di- ameter. Fruit is well colored, firm, yel- low fleshed, clingstone, and good quality. Chilling requirement is about 900 hours. Dixired is recommended for planting with Redcap to offset any prolonged dormancy that Dixired might exhibit in mild winters. Redcap, Southland X Dixired, was de- veloped by the USDA Field Station at Fort Valley and introduced commercially in 1952. Redcap ripens approximately 6 weeks before Elberta and normally 1 or 2 days before Dixired. Redcap has good quality fruit that is similar to Dixired, yellow fleshed, round, clingstone, me- dium sized, well colored, and firm at shipping maturity. Chilling requirement is approximately 750 hours. Redhaven, Halehaven X Kalhaven, was introduced by Michigan State University at South Haven, Michigan. Ripening date is 4 weeks before Elberta and 1 week later than Coronet. Fruit is yellow fleshed, semi-cling at shipping maturity, firm, and of good quality, but skin color is not as good as Dixired. In some years fruit develops a rough suture under Ala- bama conditions. Trees are productive, vigorous, and need considerable thinning to size properly. Chilling requirement is about 950 hours. It performed well in growers' orchards during the years 1963- 1966, and is recommended for the pe- riod 4 weeks before Elberta. Sentinel, FV5-56 X Dixigem, is from a cross made in 1946 and evaluated as FV173-47. Named and released in 1966 by the USDA Field Station, Fort Valley, it ripens with Dixigem and slightly later than Coronet. The fruit is round, me- dium-sized, freestone when fully ma- tured, and has medium pubescence. At maturity, about 75 per cent of the sur- face is covered with a red blush over a yellow ground color. The flesh is yellow, firm but melting, and of good flavor and texture. Trees of Sentinel are vigorous, productive, and self-fortile. The variety has good resistance to bacterial spot dis- ease. Chilling required to break the rest period of its buds is approximately 850 hours at or below 45'F. Regina, formerly tested as F-14, was released by USDA in 1958. The variety resulted from a cross between the va- riety Sunhigh and an unnamed seedling of W3-16 (Admiral Dewey X St. John). It ripens with Redhaven, and about 3 days later than Coronet. The fruit is me- dium-sized and ovate, with very light pubescence. About three-fourths of the surface is covered with a bright, attrac- tive red blush over a yellow ground color. The flesh is yellow, firm but melt- ing, smooth-textured, and of good flavor. Trees of Regina are above average in vigor and have been productive. Ranger, Raritan Rose selfed, was intro- duced in 1952 by the USDA Field Sta- [6 ] tion, Beltsville. Ripening 8 to 31/2 weeks before, Elberta, its fruit is yellow fleshed, large, well colored, firm, ovate, nearly freestone at shipping maturity, and has good quality. The fruit ripens uniformly and can be harvested in three pickings. Ranger trees are productive and vig- orous, and the variety has exhibited high resistance to bacterial leaf spot in Chil- ton County. Poorly pruned trees tend to develop weak crotches. Ranger is recom- mended for the same season as Keystone. It has a chilling requirement of about 950 hours. Redtop, formerly tested as F-15, was released by the USDA in 1961. Redtou resulted from a cross between Sunhigh and an open-pollinated seedling of July Elberta. It ripens between the Regina and Coronet season and that of Red- globe, or about 31/2 weeks ahead of El- berta. The fruit is high quality, freestone, and larger than Coronet, but usually not as large as Redglobe. It is almost round with a slightly pointed apex, has light pubescence, and an attractive red blush over %/s of the surface when mature. Trees of Redtop are moderately vigorous and productive. They blossom with July Elberta, indicating a low chilling re- quirement to break the rest period. Loring, Frank X Halehaven, was in- troduced by the Missouri Agricultural Experiment Station in 1946. Fruit ripens 1 to 1 1/2weeks before Elberta, is yellow fleshed, freestone, firm, of good quality and color, medium size, and handles well for commercial packing. Trees are vig- orous and productive. Loring has a chil- ling requirement of about 750 hours and is recommended for the season between Southland and Elberta. Washington, V.P.I. 15 X Sunhigh, was introduced by the Virginia Agricultural Experiment Station. Its fruit is large, well colored, firm, and freestone. The fruit buds are resistant to spring frost damage. Washington is suggested in the Halehaven season. Blake, J. H. Hale X Primrose, was in- troduced in 1958 by the New Jersey Ag- ricultural Experiment Station. Ripening season is one-half week before Elberta. Blake fruit is freestone, yellow fleshed, of good color and quality, and has firm flesh at shipping maturity. Trees are moderately vigorous and tend to set light crops in most years. Chilling requirement is about 750 hours. Blake is recom- mended for commercial planting to pre- cede Elberta by 3 to 4 days. Redskin, J. H. Hale X Elberta, was re- leased by the Maryland Agricultural Ex- periment Station in 1944. It ripens at the same time as Elberta. Redskin fruit has yellow flesh, good color and quality, is freestone, firm, and large when properly thinned. In some years a rough suture will develop. Trees are moderately vig- orous and productive. Blossoms tend to set fruit every year. Redskin is moder- ately resistant to bacterial leaf spot. Chil- ling is about 750 hours. Rio-Oso-Gei, parentage unknown, was introduced in 1938 by W. F. Yerkers, of Rio-Oso, California. Fruit ripens 1 week after Elberta, is yellow fleshed, of excellent quality, round, firm, well col- ored, and of good size when thinned properly. Chilling requirement is about 850 hours. Trees are vigorous and pro- ductive. Rio-Oso-Gem is recommended for late market. Dixiland, FV5-56 (Halehaven selfed) X Dixigem, was released by the USDA, Beltsville, in 1962 after being tested as FV127-1. Dixiland ripens with the va- riety Redskin and about 2 to 3 days earlier than Elberta. The fruit is ovate, large-sized, and freestone, with light pubescence. At maturity about 50 per cent of the surface is covered with a red blush over a yellow ground color. The flesh is yellow, firm but melting, and of good texture and flavor. Trees of Dixi- land are vigorous, productive, and self- fertile. The variety is relatively resistant to bacterial spot disease. The chilling re- quirement to break the rest period of its [7] buds is approximately 750 hours below 450F. Alred Elberta, a bud sport of regular Elberta, is red all over except for a yel- low stripe at the suture. It performs like regular Elberta. Royalvee, is similar to Dixired in ap- pearance but ripens 7 to 10 days later. TESTED VARIETIES NOT RECOMMENDED The following varieties have been tested but are not recommended for com- mercial planting in Alabama: After Glow Alabama Ambergem* Arp Augbert Autum Bell of Georgia Best May Brackett Brilliant Burbank Elberta Cannon Champion Cherry Red Coronet Cumberland Dawne Dixigem Dixigold Early East Early Elberta Early Gold Early Hiley Early-Red-Fre* Early Rose Early Triogem Fair Beauty Fairhaven Fay Elberta Fireglow Fisher Flamingo Gay Elberta Gemmers Early Elberta Gemmers Late Elberta Giant Jubilee Goodcheer Golden Blush Golden East Golden Globe Golden Jubilee Goldenrod * Varieties recommended for home use. Halberta Halegold Hale Harrison Brilliant Halehaven Heath Cling Hiland Indian Cling" Jerseyland Jewel J. H. Hale June Elberta June Gold June Pink July Elberta July Heath Keystone Late Rio Late Rose Liberta Lizzie Marcus Maybell Mayflower Meadowlark Merrill Brilliant Merrill Beauty Merrill Dandy Merrill Fiesta Merrill 49er Merrill Gem Merrill Goldrush Merrill Hale Merrill June Merrill Pageant Missouri Nector Newday Ozark Polly Poppy Prairie Clipper Prairie Dawn Prairie Daybreak Prairie Rambler Prairie Rose Prairie Sunrise Radiance Raritan Rose* Red Bird Red Crest Red Elberta Red Rose Redwing Richaven Robin Rodeo Shin's Delicious Simpsonred Slappey Southern Glow Southaven Springtime Stark's Delicious Stoner Story Early Elberta Sullivan Elberta Summer Crest Summer Rose Sunbeam Sunglow Sunhaven Sunhigh Sure Crop Swannee Triogem Tulip Valigold Vanguard Vedette White Hale White Haven White Rose World's Earliest Yates Late Elberta Yellow Hiley