Your search found 3 records
1 Leaky, R.; Caron. P.; Craufurd, P.; Martin, A.; McDonald, A.; Abedini, W.; Afiff, S.; Bakurin, N.; Bass, S.; Hilbeck, A.; Jansen, T.; Lhaloui, S.; Lock, K.; Newman, J.; Primavesi, O.; Sengooba, T.; Ahmed, M.; Ainsworth, E.; Ali, M.; Antona, M.; Avato, P.; Barker, D.; Bazile, D.; Bosc, P. M.; Bricas, N.; Burnod, P.; Cohen, J.; Coudel, E.; Dulcire, M.; Dugue, P.; Faysse, N.; Farolfi, S.; Faure, G.; Goli, T.; Grzywacz, D.; Hocde, H.; Imbernon, J.; Ishii-Eiteman, M.; Leakey, A.; Leakey, C.; Lowe, A.; Marr, A.; Maxted, N.; Mears, A.; Molden, David; Muller, J. P.; Padgham, J.; Perret, S.; Place, F.; Raoult-Wack, A. L.; Reid, R.; Riches, C.; Scherr, S.; Sibelet, N.; Simm, G.; Temple, L.; Tonneau, J. P.; Trebuil, G.; Twomlow, S.; Voituriez, T. 2009. Impacts of AKST on development and sustainability goals. In McIntyre, B. D.; Herren, H. R.; Wakhungu, J.; Watson, R. T. (Eds.). International Assessment of Agricultural Knowledge, Science and Technology for Development (IAASTD): Agriculture at a Crossroads, global report. Washington, DC, USA: Island Press. pp.145-253.
Agricultural production ; Fish ; Livestock ; Crop management ; Water management ; Watershed management ; Agroforestry ; Poverty ; Health ; Gender
(Location: IWMI HQ Call no: e-copy only Record No: H042791)
(2.08 MB)
2 Nandan, R.; Poonia, S. P.; Singh, S. S.; Nath, C. P.; Kumar, V.; Malik, R. K.; McDonald, A.; Hazra, K. K. 2021. Potential of conservation agriculture modules for energy conservation and sustainability of rice-based production systems of Indo-Gangetic Plain Region. Environmental Science and Pollution Research, 28(1):246-261. [doi: https://doi.org/10.1007/s11356-020-10395-x]
Conservation agriculture ; Energy conservation ; Sustainability ; Rice ; Crop production ; Cropping systems ; Crop management ; Wheat ; Maize ; Energy consumption ; Energy requirements ; Productivity ; Crop residues ; Crop establishment ; Direct sowing ; Economic analysis / South Asia / India / Indo-Gangetic Plain
(Location: IWMI HQ Call no: e-copy only Record No: H050198)
https://link.springer.com/content/pdf/10.1007/s11356-020-10395-x.pdf
https://vlibrary.iwmi.org/pdf/H050198.pdf
https://vlibrary.iwmi.org/pdf/H050198.pdf
(0.53 MB) (544 KB)
Rice-based cropping systems are the most energy-intensive production systems in South Asia. Sustainability of the rice-based cropping systems is nowadays questioned with declining natural resource base, soil degradation, environmental pollution, and declining factor productivity. As a consequence, the search for energy and resource conservation agro-techniques is increasing for sustainable and cleaner production. Conservation agriculture (CA) practices have been recommended for resource conservation, soil health restoration and sustaining crop productivity. The present study aimed to assess the different CA modules in rice-based cropping systems for energy conservation, energy productivity, and to define energy-economic relations. A field experiment consisted of four different tillage-based crop establishment practices (puddled-transplanted rice followed by (fb) conventional-till maize/wheat (CTTPR-CT), non-puddled transplanted rice fb zero-till maize/wheat (NPTPR-ZT), zero-till transplanted rice fb zero-till maize/wheat (ZTTPR-ZT), zero-till direct-seeded rice fb zero-till maize/wheat (ZTDSR-ZT)), with two residue management treatments (residue removal, residue retention) in rice–wheat and rice–maize rotations were evaluated for energy budgeting and energy-economic relations. Conservation-tillage treatments (NPTPR-ZT, ZTTPR-ZT, and ZTDSR-ZT) reduced the energy requirements over conventional tillage treatments, with the greater reduction in ZTTPR-ZT and ZTDSR-ZT treatments. Savings of energy in conservation-tillage treatments were attributed to reduced energy use in land preparation (69–100%) and irrigation (23–27%), which consumed a large amount of fuel energy. Conservation-tillage treatments increased grain and straw/stover yields of crops, eventually increased the output energy (6–16%), net energy (14–26%), energy ratio (25–33%), and energy productivity (23–34%) as compared with CTTPR-CT. For these energy parameters, the treatment order was ZTDSR-ZT = ZTTPR-ZT > NPTPR-ZT > CTTPR-CT (p < 0.05). Crop residue retention reduced net energy, energy ratio, and energy productivity when compared with residue removal. Our results of energy-economic relations favored the “conservative hypothesis,” which envisages that energy and monetary investments are not essentially the determinants of crop productivity. Thus, zero tillage-based crop establishments (ZTTPR-ZT, ZTDSR-ZT) in rice-based production systems could be the sustainable alternative to conventional tillage-based agriculture (CTTPR-CT) as they conserved non-renewable energy sources, reduced water requirement, and increased crop productivity.
3 Arenas-Calle, L.; Sherpa, S.; Rossiter, D.; Nayak, H.; Urfels, A.; Kritee, K.; Poonia, S.; Singh, D. K.; Choudhary, A.; Dubey, R.; Kumar, V.; Nayak, A. K.; McDonald, A.. 2024. Hydrologic variability governs GHG emissions in rice-based cropping systems of Eastern India. Agricultural Water Management, 301:108931. [doi: https://doi.org/10.1016/j.agwat.2024.108931]
(Location: IWMI HQ Call no: e-copy only Record No: H052967)
https://www.sciencedirect.com/science/article/pii/S037837742400266X/pdfft?md5=8a233dc1c188695046868d3b13fb208d&pid=1-s2.0-S037837742400266X-main.pdf
https://vlibrary.iwmi.org/pdf/H052967.pdf
https://vlibrary.iwmi.org/pdf/H052967.pdf
(5.84 MB) (5.84 MB)
Reducing methane (CH4) emissions is increasingly recognized as an urgent greenhouse gas mitigation priority for avoiding ecosystem ‘tipping points’ that will accelerate global warming. Agricultural systems, namely ruminant livestock and rice cultivation are dominant sources of CH4 emissions. Efforts to reduce methane from rice typically focus on water management strategies that implicitly assume that irrigated rice systems are consistently flooded and that farmers exert a high level of control over the field water balance. In India most rice is cultivated during the monsoon season and hydrologic variability is common, particularly in the Eastern Gangetic Plains (EGP) where high but variable rainfall, shallow groundwater, and subtle differences in topography interact to create complex mosaics of field water conditions. Here, we characterize the hydrologic variability of monsoon season rice fields (n = 207) in the Indian EGP (‘Eastern India’) across two contrasting climate years (2021, 2022) and use the Denitrification Decomposition (DNDC) model to estimate GHG emissions for the observed hydrologic conditions. Five distinct clusters of field hydrology patterns were evident in each year, but cluster characteristics were not stable across years. In 2021, average GHG emissions (8.14 mt CO2-eq ha-1) were twice as high as in 2022 (3.81 mt CO2-eq ha-1). Importantly, intra-annual variability between fields was also high, underlining the need to characterize representative emission distributions across the landscape and across seasons to appropriately target GHG mitigation strategies and generate accurate baseline values. Simulation results were also analyzed to identify main drivers of emissions, with readily identified factors such as flooding period and hydrologic interactions with crop residues and nitrogen management practices emerging as important. These insights provide a foundation for understanding landscape variability in GHG emissions from rice in Eastern India and suggest priorities for mitigation that honor the hydrologic complexity of the region.
Powered by DB/Text WebPublisher, from
