N and P fertilization in mungbean-maize cropping system in Takhli soil series
2000
Pairoj Panpruik(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Laksanawadee Panpruik(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Tienchai Suwanavesh(King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand))
Field experiment was conducted at Nakhon Sawan farmers field in 1998. The experimental design was a split plot with 4 replications, Main plots consisted of 2 rates of mungbean (1st crop) phosphate fertilization which were 0, 5 kg/rai. Subplots were N and P fertilization for maize (2nd crop). They were 3 retes of nitrogen 0, 5, 10 kg/rai and 2 rates of phosphate 0, 5 kg P2O5/rai. Mungbean (var. Chainat 36) and maize (var. Cargill Big 999) were grown at a spacing of 75*20 cm with 2 pl./hill and 75*25 cm with 1 pl./hill, respectively. Results showed that phosphate application for mungbean and its residual effect did not significantly increase mungbean seed weight and maize yield. Apparently, marked yield response of maize to nitrogen fertilizer was observed at 10 kg N/rai. However, there were no significant differences in maize yield among the rates of phosphate fertilizer.
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