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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: Jat, M.L. × AGROVOC: CONSERVATION AGRICULTURE ×

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Now showing 1 - 4 of 4
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    Conservation agriculture impacts in cereal-based cropping systems of South Asia: a meta-analysis
    (CIMMYT, 2021) Jat, M.L.; Chakraborty, D.; Ladha, J.; Dharamvir Singh Rana; Gathala, M.K.; Mcdonald, A.; Gerard, B.
    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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    The conservation agriculture roadmap for India: policy brief
    (ICAR, 2018) Jat, M.L.; Biswas, A.K.; Pathak, H.; Mcdonald, A.; Patra, A.K.; Acharya, C.B.; Sharma, P.C.; Chaudhari, S.K.; Singh, R.; Bhaskar, S.; Sharma, R.; Jat, H.S.; Agarwal, T.; Gathala, M.K.; Pal, S.; Sidhu, H.S.; Yadvinder-Singh; Chhokar, R.S.; Keil, A.; Saharawat, Y.S.; Jat, R.K.; Singh, B.; Malik, R.; Sharma, A.R.; Parihar, C.M.; Das, T.K.; Singh, V.K.; Jat, S.L.; Jha, B.K.; Pratibha, M.; Singh, P.; Singh, R.C.; Choudhary, O.P.; Sharma, S.; Satyanarayana, T.; Sidhu, B.S.; Gehlawat, S.K.; Sen, S.K.; Singh, A.K.; Sikka, A.K.
    Agriculture remains central to the Indian economy, providing livelihood to the majority of its population. Though Indian agriculture have made spectacular progress for food self-sufficiency, yet growing challenges of large management yield gaps, low water and nutrient efficiency, imbalance and inadequate use of external production inputs, diminishing farm profits, deterioration of soil health and environmental quality coupled with climate risks are major concerns. Feeding a growing population with increasing dietary preferences for resource-intensive food products is a major challenge. Moreover, with no scope for horizontal expansion of farming to produce needed food; improving agronomic productivity and achieving high and stable yields under changing and uncertain climate are important for feeding the growing population. Increasing climatic variability affects most of the biological, physical and chemical processes that drive productivity of agricultural systems. The productivity and stability of agricultural systems depends upon measurable factors and processes controlled by climate and non-climate drivers of production paradigm. It is therefore vitally important to develop strategies and practices to sustainably increase food production while increasing farm income, protecting natural resources and minimizing environmental footprints.
    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.
    Publication