Improvement of soil physical and chemical properties with compost application in rice-wheat cropping system
2008
Sarwar, G. (Sargodha Univ. (Pakistan). Dept. of Soil and Environmental Sciences) | Schmeisky, H. (University of Kassel, Witzenhausen (Germany)) | Hussain, N. (Soil Salinity Research Inst., Pindi Bhattian (Pakistan)) | Muhammad, S. | Ibrahim, M. | Safdar, E.
Crop productivity of soils of Pakistan has become stagnant in the last decade. One of the major constraints is organic matter status that has reached to bare minimum. This research work was conducted to evaluate the use of compost for the improvement of soil parameters of normal soil having no salinity (pHs = 8.19, ECe = 2.35 dS m-1 and SAR = 7.20). Compost (12 and 24 t per ha) was applied without and with chemical fertilizer (NPK for Rice: 100-70-70 and wheat: 140-110-70 kg/ per ha to investigate the probable effects of compost on crop yields and soil conditions. The soil pHs was lowered and SAR decreased due to acidic effect of compost, formation of acids, release of Ca and leaching of Na. There was a slight increase in ECe of the soil. The available amount of all the major plant nutrients (N, P, K, Ca and Mg) and organic matter content increased in the soil.
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