Increasing the efficiency of Rhizobium inoculation by applying Mo and effectiveness of NPK fertilization on soybean planted in zero tillage system
1989
Irfan, Z.
A study was conducted in 1986/87 with the objective of evaluating the growth and yield of soybean (Glycine max (L) Merr.) cultivar Galunggung, planted in zero tillage system after irrigated rice on latosol and vertisol soil, with different rhizobium inoculation systems and different levels of NPK fertilization. Variables studied included : a. three rhizobium inoculation systems (without inoculation, inoculation without Mo, and inoculation with Mo) and b. three levels of N, P, and K fertilization (without fertilizer, 22,5 kg N + 45 kg P2O5 + 60 kg K2O, and 22,5 kg N + 90 kg P2O5 + 30 kg K2O per hectare). On latosol soil, applying Mo increased the yield of soybean respectively, but NPK fertilization was not effective. Rhizobium inoculation with Mo, with or without fertilization, yielded the soybean seeds more than 2 t/ha. Otherwise, on vertisol soil, inoculation without Mo with 22,5 kg N + 90 kg P2O5 + 30 kg K2O per hectare gave the highest yield. Applying Mo tended to decrease the yield of soybean
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