Indian Journal of Agricultural Research

  • Chief EditorV. Geethalakshmi

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Indian Journal of Agricultural Research, volume 45 issue 4 (december 2011) : 320 - 325

EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON SOIL FERTILITY STATUS AND PRODUCTIVITY OF RICE-MAIZE SEQUENCE UNDER PERMANENT PLOT EXPERIMENT

A. Satish, A.Y. Hugar, Nagaraja Kusagur, H. Chandrappa
1Agricultural Research Station, (UAS), Kathalagere – 577 219, India

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Cite article:- Satish A., Hugar A.Y., Kusagur Nagaraja, Chandrappa H. (2024). EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON SOIL FERTILITY STATUS AND PRODUCTIVITY OF RICE-MAIZE SEQUENCE UNDER PERMANENT PLOT EXPERIMENT. Indian Journal of Agricultural Research. 45(4): 320 - 325. doi: .

ABSTRACT

Long term experiment (1988-2008) was carried out at Agricultural Research Station, Kathalagere, Karnataka to study the effect of integrated nutrient management on soil fertility status and productivity of rice-maize cropping sequence. The soil samples were collected after the harvest of summer maize crop in 2007-08 and analysed for pH, EC, organic carbon, available phosphorus and potassium status.The organic sources of nutrients  in combination with inorganic fertilizers has showed improvement in  organic carbon content from 0.68 per cent to 0.73 per cent, available phosphorus from 12.3 kg/ha to 22.01 kg/ha and maintained  available potassium content. In general there was decrease in available potassium content among all the treatments due to crop removal as a result of continuous cropping.  Significant increase in rice yield were noticed in treatments with paddy straw as  source  of nitrogen (25 to 50 %). Higher maize yield was observed in treatments with both organic and inorganic fertilizers in kharif followed by 100 per cent NPK in summer season, thus showing the beneficial effect of organic sources of nutrients on the succeeding crop and also improving the soil fertility levels.

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