Effects of a growth retardant paclobutrazol on the growth and yield related elements of peanut (Archis hypogea L.)
1988
Lee, H.S. (Rural Development Administration, Suwon (Korea R.). Agricultural Chemicals Research Institute) | Cho, J.S. (Chungnam National Univ., Taejon (Korea R.). Coll. of Agriculture)
This study was conducted to evaluate the effect of a growth retardant Paclobutrazol on the growth, yield and its components, and physiological traits in peanut cv. Saeddle (early variety) and Nampung medium variety. Main stem and branch length of both varieties were remarkably retarded at early growth stage application, but the retardation effect was reduced at late growth stage application. Number of branches was increased remarkably by treating 60ppm at 20 days after seedling DAS in early variety. Lodging in medium variety was not observed through growth period when 120ppm of Paclobutrazol was applied while lodging did not appear between 40 DAS and 80 DAS in early variety. The numbers of riped pods in early variety was increased when application of 120ppm at 40 DAS maed while it was increased as application of 120ppm at 90 DAS in the medium variety. Cercospora leaf spot was reduced by spraying at 40 or 50 DAS regrdless of concentration and varieties. Chlorophyll content and photosynthetic activity increased when paclobutrazol was applied during 40-60 DAS in early variety while these were observed at 90 DAS in medium variety. Seed weight tended to increase as paclobutrazol application was delayed. The ratio of pods to seeds was higher at 60ppm-40 DAS in early variety while it was higher at 130ppm-90 DAS in medium variety
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