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Mcdonald, Andrew

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Mcdonald
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Andrew
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Mcdonald, A.
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Author: Kumar, V. × AGROVOC: CONSERVATION AGRICULTURE ×

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Now showing 1 - 6 of 6
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    Influence of conservation agriculture-based production systems on bacterial diversity and soil quality in rice-wheat-greengram cropping system in eastern Indo-Gangetic Plains of India
    (Frontiers Media S.A., 2023) Kumar, R.; Choudhary, J.S.; Naik, S.K.; Mondal, S.; Mishra, J.S.; Poonia, S. P.; Saurabh, K.; Hansraj Hans; Kumar, S.; Das, A.; Kumar, V.; Bhatt, B.P.; Chaudhari, S.K.; Malik, R.; Craufurd, P.; Mcdonald, A.; Sherpa, Sonam
    Publication
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    Understanding decision processes in becoming a fee-for-hire service provider: a case study on direct seeded rice in Bihar, India
    (Elsevier, 2021) Brown, B.; Samaddar, A.; Singh, K.; Leipzig, A.; Anurag Kumar; Kumar, Pankaj; Singh, D.K.; Malik, R.; Craufurd, P.; Kumar, V.; Mcdonald, A.
    Publication
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    Potential of conservation agriculture modules for energy conservation and sustainability of rice-based production systems of Indo-Gangetic Plain region
    (Springer, 2021) Nandan, R.; Poonia, S. P.; Sati Shankar Singh; Chaitanya Prasad Nath; Kumar, V.; Malik, R.; Mcdonald, A.; Hazra, K.K.
    Publication
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    Designing profitable, resource use efficient and environmentally sound cereal based systems for the Western Indo-Gangetic plains
    (Nature Publishing Group, 2020) Jat, H.S.; Kumar, V.; Datta, A.; Choudhary, M.; Yadvinder-Singh; Kakraliya Suresh Kumar; Poonia, T.; Mcdonald, A.; Jat, M.L.; Sharma, P.C.
    Publication
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    Assessing soil properties and nutrient availability under conservation agriculture practices in a reclaimed sodic soil in cereal-based systems of North-West India
    (Taylor & Francis, 2018) Jat, H.S.; Datta, A.; Sharma, P.C.; Kumar, V.; Yadav, A.K.; Choudhary, M.; Choudhary, V.; Gathala, M.K.; Sharma, D.K.; Jat, M.L.; Yaduvanshi, N.P.S.; Singh, G.; Mcdonald, A.
    Soil quality degradation associated with resources scarcity is the major concern for the sustainability of conventional rice-wheat system in South Asia. Replacement of conventional management practices with conservation agriculture (CA) is required to improve soil quality. A field experiment was conducted to assess the effect of CA on soil physical (bulk density, penetration resistance, infiltration) and chemical (N, P, K, S, micronutrients) properties after 4 years in North-West India. There were four scenarios (Sc) namely conventional rice-wheat cropping system (Sc1); partial CA-based rice-wheat-mungbean system (RWMS) (Sc2); CA-based RWMS (Sc3); and CA-based maize-wheat-mungbean (Sc4) system. Sc2 (1.52 Mg m−3) showed significantly lower soil bulk density (BD). In Sc3 and Sc4, soil penetration resistance (SPR) was reduced and infiltration was improved compared to Sc1. Soil organic C was significantly higher in Sc4 than Sc1. Available N was 33% and 68% higher at 0–15 cm depth in Sc3 and Sc4, respectively, than Sc1. DTPA extractable Zn and Mn were significantly higher under Sc3 and Sc4 compared to Sc1. Omission study showed 30% saving in N and 50% in K in wheat after four years. Therefore, CA improved soil properties and nutrient availability and have potential to reduce external fertilizer inputs in long run.
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    Evaluation of long-term conservation agriculture and crop intensification in rice-wheat rotation of Indo-Gangetic Plains of South Asia: carbon dynamics and productivity
    (Elsevier, 2017) Samal, S. K.; Rao, K.K.; Poonia, S. P.; Kumar, R.; Mishra, J.S.; Prakash, V.; Mondal, S.; Dwivedi, S.K.; Bhatt, B. P.; Naik, S.K.; Choubey, A. K.; Kumar, V.; Malik, R.; Mcdonald, A.
    In the context of deteriorating soil health, stagnation of yield in rice-wheat cropping system (RWCS) across Indo- Gangetic plains (IGP) and environmental pollution, a long term field experiment was conducted during 2009–2016 taking four crop scenarios with conservation agriculture (CA), crop intensification and diversified cropping as intervening technology aiming to evaluate the sustainability of the systems. Scenario 1 (S1) represented conventional farmers’ practice of growing rice and wheat with summer fallow. In scenario 2 (S2) and scenario 3 (S3), legume crop was taken along with rice and wheat with partial CA and full CA, respectively. Conventional RWCS was replaced with rice-potato + maize- cowpea cropping system with partial CA in scenario 4 (S4). The S3 scenario registered highest total organic carbon (TOC) stock of 47.71 Mg C ha−1 and resulted in significant increase of 14.57% over S1 (Farmer’s practice) in 0–30 cm soil depth after 7 years of field trial. The S4 scenario having intensified cropping systems recorded lowest TOC of 39.33 Mg C ha−1 and resulted in significant depletion of 17.56% in C stock with respect to S3 in 0–30 cm soil depth. The TOC enrichment was higher in S2, S3 and S4 scenario in the surface soil (0–10 cm) compared to S1. At lower depth (20–30 cm), the TOC enrichment was significantly higher in S2 (12.82 Mg C ha−1) and S3 (13.10 Mg C ha−1 soil) over S1 scenario. The S2 and S3 scenario recorded highest increased allocation of TOC (3.55 and 6.13 Mg C ha−1) to passive pool over S1. The S2 (15.72 t ha−1), S3 (16.08 t ha−1) and S4 (16.39 t ha−1) scenarios recorded significantly higher system rice equivalent yield over S1 (10.30 t ha−1). Among the scenarios, S3 scenario had greater amount of total soil organic carbon, passive pool of carbon and higher system rice equivalent yield, thus, is considered the best cropping management practice to maintain soil health and food security in the middle IGP.
    Publication