Sorghum growth and yield characteristics as impacted by nitrogen levels and methods for managing rice crop residues

Abstract

The current study was conducted on a sandy clay loam soil at the Agricultural College Farm, Bapatla, during the rabi season of 2021-2022, to determine the impact of different nitrogen levels and rice crop residue management strategies on sorghum development and yield. The experiment was set up using four methods for managing rice crop residues in a split-plot configuration (M1: No residue, M2: Burning of residue, M3: Incorporation of residue with rotovator without application of ANGRAU decomposer and M4: Incorporation of residue with rotovator after application of ANGRAU decomposer as main plot treatments and four nitrogen levels (Control, 40 kg ha−1, 80 kg ha−1and 120 kg ha−1) as sub plot treatments. Following the application of ANGRAU decomposer, the inclusion of residue by a rotovator produced better growth and yielded qualities (M4). When it comes to nitrogen levels, applying 120 kg N ha−1 (S4) gave good results. Therefore, using a rotovator to incorporate residue after applying ANGRAU decomposer (M4) and application of 120 kg N ha−1 (S4) and ANGRAU decomposer (M4) is the most effective and sustainable way to improve the growth and production characteristics of subsequent sorghum.