Combination inorganic and organic fertilizerincreased yield production of Soybean in rain-field Malang, Indonesia

Inorganic and organic fertilizer have role on improve growth and yield of crops. We have examined combination effect inorganic and organic fertilizers on growth and yield production of soybean in rain-fieldat rainy season.The experiment was designed based on a Randomized Completed Block with following combination inorganic fertilizer at doses75 kg ha ^-1, 150 kg ha ^-1, 225 kg ha ^-1,with organic fertilizer at doses 0 t ha ^-1, 0.5 t ha ^-1,1t ha ^-1. The resultof this experiment showed that combination between inorganic and organic fertilizers havesignificant effect on growth and yield production of soybean. Combination of inorganic and organic fertilizerat dose 225 kgha ^-1 and 1 tha ^-1respectivelyobtained the highest yield production of soybeanthat is3.51tha ^-1. The combination also increased 41%yield production of soybeancompares withinorganic fertilizer alone at dose 75 kg ha ^-1.Besides increased yield production of soybean, the combination also increasedCorganicof soil 26.4% compared with inorganic fertilizer at dose 75 kg ha ^-1without adding organic fertilizer.