Long-Term Integrated Nutrient Management in the Maize–Wheat Cropping System in Alluvial Soils of North-Western India: Influence on Soil Organic Carbon, Microbial Activity and Nutrient Status

Autor: Ahmed Gaber, Akbar Hossain, Vibha Verma, Seema Sharma, A. S. Toor, Vivek Sharma, Lovedeep Kaur Pandher, Salwinder Singh Dhaliwal, Mehakpreet Kaur Randhawa, Sohan Singh Walia, Arvind Kumar Shukla, Majid Alhomrani, Prabhjot Singh
Rok vydání: 2021
Předmět:
Zdroj: Agronomy; Volume 11; Issue 11; Pages: 2258
Agronomy, Vol 11, Iss 2258, p 2258 (2021)
ISSN: 2073-4395
Popis: Integrated nutrient management (INM) is a widely recognized tool to ensure sustainable crop productivity while preserving soil fertility. The addition of organic manures in soil has been evidenced to improve soil characteristics, in addition to improving nutrient availability. The soil samples, with five treatment combinations of chemical fertilizers with farmyard manure (FYM), were collected from a 17-year-old field experiment conducted at PAU, Ludhiana to investigate the effect of INM on the buildup of organic carbon (OC), microbial community, soil nutrient status and improvement in soil physical properties under the maize–wheat cropping system. The INM technique enhanced the OC content (0.44 to 0.66%), available N (152.8 to 164.9 kg ha−1), P (22.8 to 31.4 kg ha−1) and K (140.6 to 168.0 kg ha−1) after 17 years. The DTPA-extractable and total micronutrients (Zn, Cu, Fe, and Mn) status also improved significantly with FYM supplementation. The organic source, coupled with inorganic fertilizers, improved the water holding capacity, total porosity, soil respiration, microbial biomass C, microbial biomass N, and potentially mineralizable N. However, pH, EC, and bulk density of soil decreased with the addition of FYM, coupled with chemical fertilizers.
Databáze: OpenAIRE
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