Relationship between inorganic nitrogen in soil, nitrogen in plant and tillering in wetland rice [in Philippines]
1990
Bhuiyan, N.I. | Craswell, E.T. | Bouldin, D.R. (International Rice Research Inst., Manila (Philippines))
The relationship between inorganic N in soils, N in plant and tillering in IR36 were studied under flooded conditions in the greenhouse of the International Rice Research Institute, Philippines. Increasing amounts of inorganic N at 0 DAT increased tiller number at maximum tillering stage (45 DAT) but did not benefit the plant at an earlier stage of growth (0-30 DAT) if the soil contained about 50-60 ppm inorganic N during that period. Nitrogen content (%) plant tops at early growth stage (0-15 DAT) was not a useful tool in predicting tiller number at maximum tillering stage (45 DAT) and N-fertility of the soil. Nitrogen loss and N-supplying capacities varied considerably among soils.
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