Comparative effectiveness of two potassium sources in rice wheat cropping system
2000
Hussain, T. (University of Agriculture, Faisalabad (Pakistan). Dept. of Soil Sciences) | Abbas, M.A. | Ali, T.I.
A long term field experiment was conducted on rice and wheat on a sandy clay loam Typic Camborthid soil to assess the relative effectiveness of two potassium sources viz. sulphate of potash (SOP) and muriate of potash (MOP) each applied @ 75 and 150 kg/ha as K2O. The results of 5 years trials showed that both the K sources were statistically at par at 75 and 150 kg/ha in paddy yield where as the wheat grain yield were not affected significantly both by K source or K dose. There was no significant effect of various treatments on the soil ECe and pHs whereas SO4 Content in the soil increased with SOP applied @150 kg K2O/ha and Cl content increased with MOP. Economic analysis of time data showed that MOP fertilizer was more profitable and economical than SOP. Besides, no ill effect of increased Cl ion was observed oil soil properties as well as crop yield under the Typic Camborthid, non saline, non sodic soil conditions.
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