LONG TERM EFFECT OF ORGANIC MANURE AND FERTILIZERS ON SOIL ORGANIC CARBON POOLS UNDER SOYBEAN-SAFFLOWER CROPPING SYSTEM IN VERTISOL

SWATI MUNDHE¹*, A.S. DHAWAN², SYED ISMAIL^3
1Department of Soil Science and Agricultural Chemistry, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 431 402, Maharashtra, India
²College of Agriculture, Badanapur, Jalna, 431203, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 431 402, Maharashtra, India
³Department of Soil Science and Agricultural Chemistry, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 431 402, Maharashtra, India
* Corresponding Author : swati.mundhe88@gmail.com

Received : 20-05-2018     Accepted : 27-05-2018     Published : 30-05-2018
Volume : 10     Issue : 10       Pages : 6137 - 6140
Int J Agr Sci 10.10 (2018):6137-6140

Keywords : Soil organic carbon, Water soluble carbon, Labile carbon, Total organic carbon, Dehydrogenase activity, Carbon management index
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 431 402, Maharashtra, India
Author Contribution : All author equally contributed

The present investigation was conducted during 2015-2016 under ongoing All India Coordinated Research Project on LTFE with soybean-safflower cropping sequence in Vertisol (Typic Haplusters) that commenced from 2006-2007 at Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani. The present investigation was conducted to study the continuous effect of long-term organic manure and fertilizers on soil organic carbon pools under soybean-safflower cropping system. Treatment includes 50% NPK, 100% NPK, 150% NPK, 100% NPK + hand weeding, 100% + ZnSO4 at 25 kg ha-1, 100% NP, 100% N, 100% NPK + FYM at 5 Mg ha-1, only FYM, absolute control, fallow. The experiment was laid out in Randomized Block Design (RBD) with twelve treatments and four replications. Continuous application of organic manure alone or in combination with inorganic fertilizer significantly influenced the soil organic carbon, water soluble carbon, labile carbon, total organic carbon, dehydrogenase activity, carbon management index. The active fraction of soil organic carbon significantly higher in plot receiving 100% NPK + FYM at 5 Mg ha-1. Significantly increase in soil organic carbon (6.89 g kg-1), water soluble carbon (26.93 mg kg-1), and labile carbon (325.50 mg kg-1) with the application of 100% NPK + FYM at 5 Mg ha-1. Integrated use of nutrient sources was significantly increases dehydrogenases activity (50.21 µg g-1 soil 24 hr-1), total carbon content (18.76 g kg-1) in treatment receiving 100% NPK + FYM at 5 Mg ha-1 and in treatment receiving 150% NPK and only FYM 10 Mg ha-1. As compared to no-fertilizer and no-manure application (control), the carbon management index (CMI) was 2.24 fold higher when organic and inorganic fertilizer applied 100% NPK + FYM at 5 Mg ha-1 improvement in the plant stand and increase in organic inputs increase in CMI would serve as better indicator for soil health. Integrated use of FYM with chemical fertilizers or FYM alone exerted significant effect on soil organic carbon pools in soil.

1. Brar B.S., Singh Kamalbir, Dheri G.S., Kumar B. (2013) Soil and Tillage Research, 128, 30-36
2. Chan K.Y., Bowman A., Oates A.L. (2001) Soil Science, 166, 61-67.
3. Katakar R.N., Sonune B.A. and Kadu P.R. (2011) Indian Journal of Agricultural Sciences, 81 (8), 58-63.
4. Khursheed S., Arora S., and Ali T. (2013) International Journal of Environmental Pollution and Solutions, 1, 17-21.
5. Kumari G., Mishra B., Kumar R., Agarwal B.K. and Sing B.P. (2011) Journal of Indian Society of Soil Science, 59(3), 245-250.
6. Lakaria Brij Lal, Patne Manish Kumar, Jha Pramod and Biswas A. K. (2012) Journal of Indian Society of Soil Science, 60 (2), 125-13.
7. McGill W.B., Cannon K.B., Robertson J.A. and Cook F.D. (1986). Canadian Journal of Soil Science, 66, 1-9.
8. Meshram N.A., Syed Ismail and Patil V.D. (2016) Journal of Pure and Applied Microbiology, 10 (1),139-150.
9. Panse G. and Sukhatme P. V. (1985) ICAR, New Delhi.
10. Puli, M.R., Katkar R.N., Jayalakshmi M. and Rao B.S. (2013) International Journal of Applied Biology and Pharmaceutical Technology, 4 (4), 420-423.
11. Srinivas Rao Ch., Venkateswarlu B., Kundu S. And Vittal K.P.R. (2011) Indian Journal of Dryland Agricultural Research and Development, 26 (1), 53-64.
12. Thakur R., Kauraw D.L. and Singh (2009) Journal of Soils and Crops, 19 (1), 14-20.
13. Verma B.C., Choudhury B.U., Ramkrushna G.I., Kumar M., Bordoloi L.J., Hazarika S.H., Ramesh T., Bhuyan D. (2014) Indian Journal of Hill Farming, 27 (1), 42-46.
14. Verma G. and Mathure A.K. (2009) Journal of Indian Society of Soil Science, 57 (3), 317-322.