pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-1-1-7 Articles Effects of Succinic Acid 2,2-Dimethylhydrazide on Yield and Other Characteristics of Peanut Cultivars1 R. H. Brown and W. J. Ethredge 2 Professor and Assistant Professor of Agronomy, respectively

1Contribution of the Georgia Agricultural Experiment Station, College Station, Athens, Georgia 30602 and the Southwest Georgia Branch Experiment Station, Plains, Georgia 31780.

 3 1974 1 1974 1 1 20 23 American Peanut Research and Education Society 1974 American Peanut Research and Education Society Abstract

Succinic acid 2,2-dimethylhydrazide (SADH) was applied at 0.95 kg/ha 60 days after planting to seven peanut (Arachis hypogaea L.) cultivars in 1970 and eight cultivars in 1971 and 1972. Pod yield of all cultivars were increased by SADH in 1970 by an average of 20%. Yields of Spanish type cultivars were increased in 1971 but not in 1972, while yields of runner and Virginia cultivars were not affected in 1971 nor 1972. There was a trend for increases in the number of pods per plant in Spanish cultivars in all three years and in runner and Virginia types in 1970. Weight per 100 pods was reduced in the Spanish cultivars only in 1972. Main stem lengths were reduced by SADH treatment by an average of 32% in 1970 and 27% in 1971.

 Additional key words Kylar; , Alar; , B-nine; , growth retardant; , groundnuts.