Vol. 9, Issue 5, Part H (2025)

The experiment entitled “Net energy of soybean based cropping systems under diverse nitrogen management” was conducted for two consecutive years viz., Kharif and Rabi seasons of 2019-20 and 2020-21 at Research farm Department of Agronomy, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. The soil selected for experiment was found to be clayey in texture, medium in available Nitrogen (179.00 Kg ha^-1), low in available Phosphorus (18.03 Kg ha^-1), fairly high in available Potassium (367.28 Kg ha^-1) and moderate in organic carbon and slightly alkaline (7.86) in reaction. The present investigation was tested in soybean based cropping sequence treatments during 2019-20 and 2020-21. The analysis of the soybean crop was done in Split Plot design (SPD) while the analysis of Rabi sequence crops was done in Randomized Block Design (RBD). The experiment consisted of main plot treatments as cropping sequence viz., Soybean as Kharif crop followed by four Rabi crops viz., Chickpea, Rabi Maize, Safflower and Potato. On the other hand, main plot is again divided into sub-plots consisting of% Nitrogen and Source (% N Urea-% N FYM) viz., N0-Control (0-0); N1-100% RDN (100-0); N2-100% RDN (75-25); N3-100% RDN (50-50); N4-100% RDN (25-75). Results showed that energy input and energy output (MJ/ha) was found to be highest in Soybean-Potato followed by Soybean-maize. However, application of 75% RDN through Urea and 25% through FYM showed significantly higher energy input and highest energy output was recorded with application of 100% RDN through Urea only during both the years of study. During 2019-20 and 2020-21, highest net energy was observed under Soybean-Chickpea sequence where no fertilizers were applied.