Influence of 11 years of crop residue management on rice productivity under varied nitrogen levels in the rice-wheat cropping system

• Published in: Plant, soil and environment soil and environment, 2023, Vol.69 (7), p.333-343
• Main Authors: Kumar Gupta, Rajeev, Kaur Sraw, Paramjit, Singh Kang, Jasjeet, Kaur, Jagroop, Kalia, Anu, Sharma, Vivek, Singh Manhas, Surjeet, Al-Ansari, Nadhir, Alataway, Abed, Dewidar, Ahmed Z., Mattar, Maohamed A.
• Format: Article
• Language: English
• Subjects: climate change; environmental pollution; Geoteknik; nitrogen uptake; Oryza sativa L; paddy straw; Soil Mechanics
• ISSN: 1214-1178; 1805-9368; 1805-9368
• DOI: 10.17221/68/2023-PSE

The present study compares the six crop residue management techniques in main plots (since 2008) and three split nitrogen (N) levels, i.e., 75, 100 and 125 kg N/ha in subplots for rice crops for two years, i.e., 2019 and 2020, in sandy loam soil under field conditions. This experiment evaluated the long-term effect on rice productivity, soil organic carbon content and nutrient requirement in rice-wheat cropping system. The results revealed that different crop residue management practices and N levels significantly influenced rice growth, yield and yield attributes and improved nutrient uptake by grain and straw. Maximum grain yields of 20.8% and 17.8% higher over the conventional (no straw) treatment during 2019 and 2020, respectively, were recorded where the rice and wheat residue was re-tained or incorporated. The rice grain yield without residue responded significantly up to 125 kg N/ha. Whereas, with rice and wheat residue, rice grain yield did not respond to the application of N beyond 75 kg N/ha during both years.