Effect of Long Term Application of Fertilizers and Manures on Organic Matter Fractions at different Depths under Soybean-wheat Sequence in Vertisol

Author: Anupama K.*, N.G. Mitra, B.S. Dwivedi and M. Mohanty

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Abstract

The study was aimed to enquire the effect of long term application of fertilizers and manures on soil organic matter fractions at different depths under soybean-wheat sequence in vertisol. The experiment was conducted during the year of 2016-17 at Research Farm of Department of Soil Science and Agricultural Chemistry, JNKVV, Jabalpur. Effect on varying doses of N, NP, NPK, NPK with FYM, Zn on organic matter fractions viz., Humic acid, Fulvic acid and Humin after 46 year of soybean-wheat crop sequence was studied. The study includes ten different treatments i.e. 50% NPK, 100% NPK, 150% NPK, 100% NPK+HW, 100% NPK+ Zn, 100% NP, 100% N, 100% NPK+FYM, 100% NPK-S and control. The result obtained from the study revealed that application of 100 % NPK + FYM @ 15t ha-1 to soybean and wheat significantly increased the organic matter fractions in the soil. Combined use of 100% NPK and FYM was significantly superior over all the treatments. It was also observed that the soil organic matter fraction

Keywords

Long term fertilizer experiment, Humic acid, Fulvic acid, Humin, Vertisol

Conclusion

Long-term fertilizer experiments of more than four decades have shown a build-up in soil organic matter fractions as a result of combined application of organic manures and inorganic fertilizers under soybean–wheat cropping system. Integrated use of farmyard manure and fertilizers maintained and improved soil organic carbon. The results showed that the treatment 100 % NPK + FYM in soybean-wheat sequence registered significantly higher value of humic acid, fulvic acid & humin content in soil over control during the year 2016 after the harvest of wheat. The continuous addition of organic and inorganic treatments noticed increased organic matter fractions in soil. It is due to better and improved soil physical parameters and conductive environment for its fraction. Thus, NPK + FYM were the best option for increasing organic matter status in soil. Thus the balanced application of NPK fertilizers with FYM was the best option for nutrient management in intensive cropping system to improve

References

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How to cite this article

Anupama K., N.G. Mitra, B.S. Dwivedi and M. Mohanty (2022). Effect of Long Term Application of Fertilizers and Manures on Organic Matter Fractions at different Depths Under Soybean-wheat Sequence in Vertisol. Biological Forum – An International Journal,