Nitrogen, phosphate and potash fertilizer application on potato grown after irrigated paddy in mid-elevation
1990
Gunadi, N. | Asandhi, A.A. (Balai Penelitian Hortikultura Lembang (Indonesia))
The response of potato to fertilizer application varies from area to area, from type to type of soil and depends on several factors, i.e.: the previous crop and fertilizer application. In order to make use of the fertilizer residue of the irrigated paddy, an experiment using RBD was conducted in Magelang (452 m asl) to study the effect of nitrogen (0, 45, 90, 135 and 180 kg/ha N) phosphate (0 and 135 m asl P2O5) and potash (0 and 100 kg/ha K2O) application on the growth and yield of potato. The result showed that nitrogen, phosphate and potash fertilizers application did not affect the plant height and number of plant harvested of potato. However, the application of nitrogen, phosphate and potash fertilizer increased the tuber yield, either per plant or per plot (24 m2). The highest tuber yield was obtained in the application of 45 kg/ha N. In addition, phosphate and potash fertilizers are still needed for growing potato after irrigated paddy in mid-elevation.
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