Abstract
An assessment was carried out on the dry land of Banjararum village, Singosari district, Malang regency East Java, from January to May 2017 (500 m asl). A randomized block design with four replications was used. As treatments were a). Control (without P), b). SP-36 with dose 125 kg ha-1 (standard); TSP with dose c). 50 kg, d). 100 kg, e). 150 kg and Rock Phosphate (RP) with dose f). 200 kg, h). 300 kg, h). 400 kg, i). 500 kg ha-1. Urea and KCl fertilizer with doses of 350 kg and 75 kg ha-1 were used in all treatment plots. The result showed that the application of TSP and RP fertilizers had the same effect as SP-36 on the plant growth and harvest yield. The best plant growth was obtained from the TSP and RP in the highest dose fertilizer. Observation of harvest yield and components of the yield also showed significant differences compared to the control and treatments of TSP and RP in the lowest dose. The highest yield was obtained at 150 kg/ha TSP treatment reaching 7.78 ton/ha-1 and not significantly different from the highest RP and SP-36 levels. RP fertilizer can use as an alternative to substitute of SP-36.
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