Peanut Cultivars: Making Sense of all the Options John P. Beasley, Jr. Professor & Extension Peanut Agronomist Crop and Soil Sciences Department John P.

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Presentation transcript:

Peanut Cultivars: Making Sense of all the Options John P. Beasley, Jr. Professor & Extension Peanut Agronomist Crop and Soil Sciences Department John P. Beasley, Jr. Professor & Extension Peanut Agronomist Crop and Soil Sciences Department

Evaluating Cultivars Maturity Range Growth Habit Seed Size Pest Resistance Marketability Seed Availability Oil Chemistry characteristics

Varieties Available in Southeast in 2006 Georgia Green AP-3 Georgia-02C C-99R Georgia-03L Georgia-01R Carver Andru II AT 3081R

Peanut Yield (lbs/A) , Tifton, Irrigated AVG Georgia-03L AP Georgia Green Carver Georgia-02C C-99R Georgia-01R

Georgia Green Predominant cultivar in SE since 1997 When first released, had best level of resistance to TSWV Seed size smallest of currently available runner type cultivars Some resistance to Rhizoctonia limb rot Will account for 55-60% of seed supply in SE in 2006

AP-3 Released in 2003 by Univ. of Florida Marketing contract with Anderson Peanut Co. Medium maturity, similar to Georgia Green Light green foliage color Level of res’t to TSWV best of any varieties More susceptible to leaf spots “Normal” oil chemistry Seed available from Anderson Peanut Co.

Georgia–02C Released from UGA in 2002 Late maturity High oleic Good level of res’t to CBR TSWV res’t better than Georgia Green

C-99R Released from Univ. of Florida in 1999 Late maturity TSWV res’t better than Georgia Green Larger seed size, approximately 650 seed per pound Can produce excess vine growth

Georgia–03L Released in 2003 from Univ. of Georgia Mid maturing (similar to Georgia Green) “Normal “ oil chemistry Resistance to TSWV = to Georgia-02C (better than Georgia Green Seed size larger than Georgia Green Growth habit exhibits prominent main stem Vigorous early season growth

Georgia–01R Released in 2001 from Univ. of Georgia Late maturing “Normal “ oil chemistry Resistance to TSWV better than any other cultivars except AP-3 and Tifrunner Significant level of res’t to CBR Large seed size (similar to C-99R) Very flat growth habit, virtually no main stem

Carver Medium maturity “Normal” oil chemistry TSWV res’t better than Georgia Green Some resistance to CBR

Andru II Early maturity Marketing contract with Anderson Peanut Co. High oleic TSWV res’t = to Georgia Green White Mold res’t = or better than Georgia Green

Variety Comparison Variety Maturity ( DAP) UGA Disease Risk Index High Oleic (Yes or No) TSWVLeaf SpotWhite MoldLimb Rot ViruGard21-28(-)3020 NANo Andru II10-14(-) Yes Gregory (Va)7-14(-) No NC-V 11 (Va)7-14(-) No Carver0-7(-) No Georgia Green No Georgia-03L No AP No AT 3081R0NA No Georgia-02C14-21(+) Yes C-99R14-21(+) No Georgia-01R14-21(+)10 15 No Tifrunner14-21(+) No

Variety2003#2004#2005# Avg. (Rank) Hull 15.2a219.2a123.7a119.4(1) A Norden17.0a116.7ab217.7a-c317.1(2) GaGreen14.2a314.0bc319.2ab215.8(3) AndruII7.7b-d711.5b-d515.2b-d411.5(4) C99R11.0a-c49.0c-e812.2c-e510.7(5) DP19.7a-d611.5b-d410.2d-g710.5(6) Carver11.0a-c59.0c-e911.2d-f610.4(7) GA01R5.2cd810.5cd68.5e-g98.1(8) AP35.7cd911.0cd75.0g87.2(9) Avg. # Feeding Sites/3 ft

Summary of Cultivars Maturity range – compared to Georgia Green –Early – Andru II (10-14), ViruGard (21-28), Carver (0-7) –Mid (same as GG) – AP-3, Georgia-03L, AT 3081R –Late (14-21 days) – Georgia-02C, C-99R, Georgia- 01R, Tifrunner TSWV Rating – from TSWV Index –30 points – Georgia Green, ViruGard –25 points – Andru II –20 points – Carver, C-99R –15 points – Georgia-03L, Georgia-02C –10 points – Georgia-01R, AP-3, Tifrunner

Summary of Cultivars Seed Size –Large-seeded (~650 seed/lb) C-99R, Georgia-01R, ViruGard –Medium (~ seed/lb) AP-3, AT 3081R, Carver, Georgia-02C, Georgia-03L, Andru II, Tifrunner –Small (~ seed/lb) Georgia Green

University of Georgia PEANUT Research and Extension