Studies carried out to investigate the effect of slow release nitrogenous fertilizers with different levels of nitrogen (N) on mahagement of rice pests. indicated that application of prilled urea with need based plant protection recorded less population of green leafhopper (GLH) and less percentage of gall fly damage as well as stem borer white ears. Neem blended urea (5:1) also recorded less population of GLH and earhead bug. Coal tar coated urea registered less white ears due to stem borer. Increased doses of nitrogen from 75 to 150 kg/ha was found to increase the population/damage of above pests and less incidence of pests was observed at low dose of nitrogen (75 kg N/ha). Coal tar coated urea and prilled urea plus need based plant protection registered higher grain yield. Among the nitrogen levels. 125 and 150 kg N/ha resulted higher grainyiel d.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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