To study the status of organic matter and its role on the physical properties of soil under intensive cultivation of paddy, a field trial was conducted. Paddy was culti vated in the sequence of IR 8 IR 8 in 1972-73, Karuna-IR 20 in 1973-74 and Co 36 IR 20 in 1974-75 following all the package of practices. Fertilizer at 185-85- 85 kg of NPK/ha was applied with a basal dressing of 25 tonnes compost. The study revealed increase of organic matter content which resulted in decrease of bulk density and improvement of water-holding capacity and porespace.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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