S. Zubaidah, I.L. Mulyaning, H. Kuswantoro
Soybean may undergo growth disorder due to destructive plant organisms. One of these organisms threatening the productivity of soybean is Bemisia tabaci Genn. This research aims to study the response of soybean lines suffering from B. tabaci fertilized with four different doses of potassium (K), K0= 0g/kg soil, K1= 0.02789 g/kg soil, K2= 0.055g/ kg soil, K3= 0.083 g/ kg soil. This research used a randomized complete block design with three replications. The genotype difference influenced pod width, pod thickness, number of unfilled pods, number of reproductive nodes, days to flowering, and days to maturity. The variation of dose influenced plant height, pod length, number of unfilled pods, the weight of 50 seeds, and days to maturity. Interaction (genotype x fertilizer) affected many aspects such as plant height, pod length, pod width, pod thickness, number of filled pods, total pods per plant, number of reproductive nodes, seed length, seed weight, and seed thickness, the weight of 50 seeds, days to flowering, and days to maturity. The research result of each genotype showed a different response to every dose. © 2020, ALÖKI Kft., Budapest, Hungary.
Universitas Negeri Malang, Jl. Semarang No. 5, Malang, Indonesia; Indonesia Legume and Tuber Crops Research Institute, Indonesian Agency for Agricultural Research and Development, Jl. Raya Kendalpayak Km. 8, Malang, Indonesia
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