Improvement of soybean seed quality by using micro-fertilizers and plant growth regulators
1991
Muhadjir, F. (Balai Penelitian Tanaman Pangan, Bogor (Indonesia))
A field experiment was conducted at Cimanggu, Bogor during the 1989 dry season. Soybean varieties Kerinci and Tidar were planted at 35 cm x 15 cm plant spacing, and the rates of fertilizer applications were 60 kg Urea + 90 kg TSP + 50 kg KCl per ha respectively. Micro-fertilizers Mo and Zn were applied through the soil and as a foliar fertilizer. Two plant growth regulators, namely Hobsanol 5 EC and Ethrel 40 PGR and their combinations with Mo and Zn were used in the experiment. Pod number and good seed number per plant were increased significantly by Mo/Zn fertilizers, and plant growth regulator Hosbonal 5EC or Ethrel 40 PGR. On the other hand Hobsanol 5EC and Ethrel 40 PGR could reduce harvest time (3-4 day earlier), and made uniformity of ripening. The weight of hundred grains did not increase significantly by application of Mo/Zn fertilizers, and Hobsanol 5 EC or Ethrel 40 PGR. Application of Mo fertilizer could increase soybean seed vigor. The highest seed yield was obtained in the combination of Mo fertilizer + Hosbanol 5EC. The protein content of the seed increased significantly by application of Zn fertilizer + Hosbanol 5EC. Variety Kerinci was more responsive than variety Tidar to the application of Mo/Zn-fertilizers and Hosbanol 5EC or Ethrel 40 PGR.
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