Effects of organic manure and chemical fertilizer on soil fertility and productivity of plant and ratoon crops of sugarcane |
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| Authors: | AP Gupta RP Narwal RS Antil |
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| Institution: | Department of Soil Science , CCS Haryana Agricultural University , Hisar, 125 004, India |
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| Abstract: | A long-term field experiment was initiated in November, 1967 at Research Area of Department of Soil Science to study the response of nitrogen to pearl millet-wheat cropping system at various doses and modes of farmyard manure application. The soil organic carbon increased with farmyard manure application and ranged from 0.68% in control to 1.82% in the plot receiving the highest annual dose (90 Mg ha?1) of farmyard manure. To study the contribution of farmyard manure on the productivity of pearl millet and wheat crops, the constants (intercept and slope) were determined between the grain yield of pearl millet and wheat crops with increasing dose of fertilizer nitrogen. Another linear regression was fitted between the intercept of the linear model and the soil organic carbon content. It has been observed that with each unit increase in the soil organic carbon, the productivity of pearl millet increased by 273 kg ha?1 and that of wheat by 1591 kg ha?1. The regression between the slope and soil organic carbon was linear in case of pearl millet (R2 0.49) but in case of wheat there was no relationship. |
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| Keywords: | Soil Organic Carbon Pearl Millet Wheat And Regression Constants |
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