Abstract

Various experiments on rice or paddy at many of the research stations have shown that ammonium sulphate as a manure for paddy has been efficacious and the increases obtained varied from 10 to 30 per cent depending upon the locality and the dosages of ammonium sulphate. Most of the experiments have also shown that the best results with ammonium sulphate are obtained when it is applied some time after planting, i. e. 3 to 4 weeks in the case of short duration varieties and 4 to 6 weeks in the case of medium and long duration rices. With the pressing need for increasing the production of rice, the quickest and surest way would appear to be the use of this manure to the rice crop where irrigation facilities exist. To estimate exactly what percentage of increase of yield ammonium sulphate would give and also to serve as demonstration to other ryots, experiments were started with the application of ammonium sulphate on ryots fields in this State.

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