Nitrogen Mineralization in Texturally Contrasting Soils Subjected to Different Organic Amendments under Semi-Arid Climates

Hafiz Muhammad Rashad Javeed, Mazhar Ali, Nitasha Kanwal, Iftikhar Ahmad (), Aftab Jamal (), Rafi Qamar, Ali Zakir, Hina Andaleeb, Raheela Jabeen, Emanuele Radicetti () and Roberto Mancinelli
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Hafiz Muhammad Rashad Javeed: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Mazhar Ali: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Nitasha Kanwal: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Iftikhar Ahmad: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Aftab Jamal: Department of Soil and Environmental Sciences, Faculty of Crop Production Sciences, The University of Agriculture, Peshawar 25130, Pakistan
Rafi Qamar: Department of Agronomy, Faculty of Agriculture, College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan
Ali Zakir: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Hina Andaleeb: Department of Biochemistry, Bahauddin Zakariya University, Multan 60000, Pakistan
Raheela Jabeen: Department of Biochemistry and Biotechnology, The Women University Multan, Multan 66000, Pakistan
Emanuele Radicetti: Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara, 44121 Ferrara, Italy
Roberto Mancinelli: Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy

Land, 2023, vol. 12, issue 5, 1-17

Abstract: Nitrogen (N) is the prime essential nutrient for agricultural productivity, and its deficiency is overcome through the application of fertilizers. However, the rate of N mineralization from organic N sources is an important process to be monitored for efficient N use and sustainable agricultural management. Laboratory incubation studies were conducted for a period of 150 days to measure N mineralization (N min ) from different organic amendments (OA) in texturally contrasting soils collected at three locations: SL1 (Bahawalpur, sandy loam), SL2 (Bahawalnagar, sandy loam), and SL3 (Rahim Yar Khan, sandy clay loam). A second study was also carried out for 25 days to monitor pH dynamics and ammonia volatilization from the same three OA-treated soils. The results showed that there was no significant difference in net N min between the soils for poultry manure (PMO) and feather meal (FMO), even if there was a substantial N min observed for PMC + FMO followed by poultry manure compost (PMC) at SL2 and SL3 soils. This might have happened due to higher microbial biomass carbon (257), nitrogen (61), fungal colonization (88 cfu g −1 soil) and enzyme activity (79) in SL3 soil receiving PMC + FMO after 150 days of incubation. However, the first-order kinetic model (R 2 = 0.86–0.95) better explained the N min in all three soils amended with OA (PMC + FMO). The soil pH had more pronounced effects on N min in all three soils. A non-significant amount of ammonia volatilization was recorded regardless of the initial pH, buffering capacity, and texture variability of the soils. Further study on the particle size of OA and soil pH is warranted to determine the actual effect of OA on N min .

Keywords: poultry manure; composting; incubation; pH; ammonia volatilization (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
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