KERAGAAN HASIL DAN KOMPONEN HASIL BEBERAPA VARIETAS KEDELAI PADA LINGKUNGAN GENANGAN

Abstract

The research aimed to evaluate the yield performance and yield components of several soybean varieties against the waterlogging environment. The research was conducted at the Balitkabi in February until May 2017. The experimental design used Randomized Block Design with two factors and four replications. The first factor is optimal environmental  (L1) and waterlogging environment (L2). The second factor is soybean varieties. The varieties used in this study were 3 varieties of soybeans (Grobogan, Demas 1, and Dega 1). In the optimal environment  (L1), the plants were planted in buckets that were planted under normal conditions . In the waterlogging treatment (L2), the polybags filled with soil and put into a wooden tub and added water. Waterlogging treatment is carried out after the plants are 21 days after planting, the wooden tub is filled with water to a height of 5 cm from the soil surface in the polybags (the plants are in submerged). The fertilizer used in this research was 15% N, 15% P2O5, 15% K2O with a dose of 1.5 g / polybags or the equivalent of 250 kg ha-1 which was applied at planting. Observations were made on the character of the pods per plant,  seeds per plant, seed weight, plant height, shoot fresh weight and shoot dry weight, root fresh weight and root dry weight and chlorophyll index. The waterloggingresulted in a decrease in yield components and soybean yield compared to the optimal environment. Waterlogging increased the root dry weight. Grobogan and Dega 1 varieties produced higher seed weights than Demas 1 varieties in waterlogging environments. Keywords: Yield and Yield Component, Soybean, Waterlogging