Improvement of fertilizer application
1993
Ishida, Hiroshi(Hokuriku National Agricultural Experiment Station, Joetsu (Japan)) | Nonglak Vibulsukh(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Prapai Chairoj(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Boonlert Boonyong(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Puanglek Morakul(Department of Agriculture, Bangkok (Thailand). Soil Science Division) | Chairoj Wongwiwatchai(Department of Agriculture, Bangkok (Thailand). Khon Kaen Field Crop Research Center)
Leaching amount of total nitrogen in ball fertilizer was less than that in granular chemical one. However, more nitrate nitrogen in ball fertilizer leached out at the early stage. Leaching of nitrate decreased by coated with clayey soil on surface of ball. Ball fertilizer contained Azolla was effective decline of nitrogen loss and yields increase of corn grain. Moreover, similar effects were obtained through application of chemical fertilizer with Azolla.
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