ARS | Publication request: Peanut disease evaluation research in 2011

Submitted to: Peanut Research at Oklahoma State University
Publication Type: Experiment Station
Publication Acceptance Date: September 30, 2011
Publication Date: December 10, 2011
Citation: Melouk, H.A., Chamberlin, K.D. 2011. Peanut disease evaluation research in 2011. In: Partners and Progress - Peanut Research at OSU, 2011. Oklahoma Agricultural Experiment Station, P-1035. p. 17-20.

Technical Abstract: Our peanut improvement efforts are focused on enhancing yield, quality, and disease resistance. Therefore, the major emphasis of this research project is to develop high oleic peanut cultivars possessing disease resistance, and high yield and grade. All the plot research reported here was performed at the Caddo Research Station, Ft. Cobb, OK. Weed management protocol was implemented and a leaf spot fungicide advisory program was used to manage foliar diseases. All plots were irrigated as needed to ensure optimum moisture with a pivot system. All plots at the Caddo Research Station were planted May 17. On June 20, moderate damage due to thrips infestation was observed on the majority of the plots. Also, on June 20, moderate soil erosion that caused the crowns to be exposed was observed. Due to the excessive and prevailing high temperature coupled with the lack of rain, incidence of Sclerotinia blight was extremely low and variable. Therefore, no disease data are included in this report. Plots were harvested over a two-week period starting Oct. 6. Also, yield and grade of all entries in the tests were determined under the prevailing environmental conditions. No significant difference was observed in yield and grade of all Spanish lines tested. One hundred seed weight of 140-1 OL, 103 and Tamnut OL06 was significantly (P= 0.05) higher than that of OLin. The 100 seed weight of the advanced breeding lines 140-1 OL, 103 and Tamnut OL06 was significantly (P= 0.05) greater than that of OLin. Overall, grades of the runner-type peanut entries ranged from 58 to 68. Two runner breeding lines 29-3 and 32-1 statistically (P=0.05) graded similar to Red River Runner and Tamrun OL07.