International Journal of Chemical Studies
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P-ISSN: 2349-8528, E-ISSN: 2321-4902   |   Impact Factor: GIF: 0.565 NAAS Rating: 5.31 NEW

International Journal of Chemical Studies

Vol. 5, Issue 6 (2017)
Soil fertility and crop productivity in upland rice (Oryza sativa L.) under different NK levels and FYM substitution


Author(s): M Saravana Kumar, GA Manjunatha, R Rajakumar and S Dhilsha

Abstract: A field experiment was conducted in College of Agriculture, Padannakkad, to study the response of soil fertility and crop productivity in upland rice to different levels of NK and substitution of inorganic N through FYM. Results revealed that application of 120 kg N ha-1 (50% through FYM) and 60 kg K2O ha -1 recorded the lowest bulk density, highest porosity, whereas highest water holding capacity was recorded by application of 100 kg N ha-1 (50% through FYM) and 50 kg K2O ha-1. Regarding nutrient status, available N and P2O5 were found to be enhanced due to the application of 120 kg N ha-1 with 25 per cent substituted by FYM and 60 kg K2O ha-1 and the highest available K2O and organic carbon per cent was recorded with the application of 120 kg N ha-1 with 50 per cent substituted as FYM and 60 kg K2O ha-1. The highest yield attributes (highest number of productive tillers m-2, filled grains panicle-1 and 1000 grain weight), grain (2822 kg ha-1) and straw (3560 kg ha-1) yields were obtained with the application of 120 kg N ha-1 with 50 per cent substituted by FYM and 60 kg K2O ha-1 and was on par with 120 kg N ha-1 with 25 per cent substituted as FYM and 60 kg K2O ha-1.

Pages: 235-238  |  522 Views  10 Downloads

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How to cite this article:
M Saravana Kumar, GA Manjunatha, R Rajakumar, S Dhilsha. Soil fertility and crop productivity in upland rice (Oryza sativa L.) under different NK levels and FYM substitution. Int J Chem Stud 2017;5(6):235-238.
International Journal of Chemical Studies