CCS Haryana Agricultural University, India
Title: Historical amendments of farmyard manure and nitrogen fertilizer on soil carbon sequestration and nitrogen use efficiency
B. H. Kumara has completed his PhD at the age of 28 years from CCS Haryana Agricultural University, Hisar, India under the guidance of Dr. R. S. Antil with very good academic performance. He has awarded Senior Research Fellowship from Indian Council of Agricultural Research (ICAR), Govt. of India for his PhD programme. Now, he is working as a Senior Research Fellow in the Department of Soil Science on a project entitled ‘GPS and GIS based soil fertility mapping in selected districts of Haryana’. He has published three research papers in reputed journals. He attended and presented in International Workshop on Silicon in Agriculture and published his master degree research work in workshops’ compendium. He had training on Remote sensing (GPS, GIS based techniques), ISRO, Department of Space, Govt. of India.
Long-term application of organic and inorganic fertilizers is a compromise between food security, soil carbon sequestration and nitrogen use efficiency. A long-term field experiment was initiated in 1967 to evaluate the impact of modes and levels of FYM and fertilizer N on soil organic C stock, and C sequestration and nitrogen use efficiency under pearl millet-wheat cropping sequence. Soil organic C stock, C sequestration and nitrogen use efficiency increased significantly with the application of FYM from 0 to 15 Mg ha-1 and fertilizer N from 0 to 120 kg N ha-1 after 43 cycles of pearl millet-wheat cropping sequence. Highest content of soil organic C stock, and C sequestration and nitrogen use efficiency in soil was observed when FYM was applied in both the seasons (kharif and rabi) compared to applied in rabi or kharif season alone. However, application of FYM was found more beneficial in rabi season as compared to its application in kharif season. Highest soil organic C stock, and C sequestration and nitrogen use efficiency in soil was recorded with combined application of 15 Mg FYM and 120 kg N ha-1. The results suggest that after 43 cycles of pearl millet-wheat cropping sequence with continuous application of FYM in different modes and doses of the intervention and N levels maintained better soil nutrients status, which in turn supports better crop productivity, C sequestration and nitrogen use efficiency and can achieve the positive and balanced soil nutrient budget in soil.
Keywords: Long-term, FYM, Nitrogen, C sequestration, Nitrogen Use efficiency.