Site-specific nutrient management for intensive rice cropping systems in Asia

Dobermann, A.; Witt, Christian; Dawe, D.; Abdulrachman, Sarlan; Gines, H. C.; Nagarajan, R.; Satawathananont, S.; Son, Tran Thuc; Tan, Pham Sy; Wang, G.H; Chien, N. V.; Thoa, V. T. K.; Phung, Cao Van; Stalin, P.; Muthukrishnan, P.; Ravi, V.; Babu, Merin; Chatuporn, S.; Sookthongsa, J.; Sun, Quingzhu; Rong-xing, Fu; Simbahan, G. C.; Adviento, M. A. A.

doi:10.1016/s0378-4290(01)00197-6

Cited by 403 publications

(228 citation statements)

References 42 publications

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“…These principles have recently become embedded in a new approach for nutrient management (79,80). In field testing conducted in 179 rice farms throughout Asia, average grain yield increased by 0.5 Mg ha −1 (11%) and N fertilizer rate decreased by 5 kg N ha −1 with field-specific management compared to the baseline farmers' fertilizer practice (68). Mean RE of applied N increased from 30% with farmers' practices to 40% with field-specific management that takes into account the large field-to-field variation in the indigenous soil N-supplying capacity.…”

Section: Improving Nitrogen Use Efficiencymentioning

confidence: 99%

Meeting Cereal Demand While Protecting Natural Resources and Improving Environmental Quality

Cassman

Dobermann

Walters

et al. 2003

Annu. Rev. Environ. Resour.

885

476

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Agriculture is a resource-intensive enterprise. The manner in which food production systems utilize resources has a large influence on environmental quality. To evaluate prospects for conserving natural resources while meeting increased demand for cereals, we interpret recent trends and future trajectories in crop yields, land and nitrogen fertilizer use, carbon sequestration, and greenhouse gas emissions to identify key issues and challenges. Based on this assessment, we conclude that avoiding expansion of cultivation into natural ecosystems, increased nitrogen use efficiency, and improved soil quality are pivotal components of a sustainable agriculture that meets human needs and protects natural resources. To achieve this outcome will depend on raising the yield potential and closing existing yield gaps of the major cereal crops to avoid yield stagnation in some of the world's most productive systems. Recent trends suggest, however, that increasing crop yield potential is a formidable scientific challenge that has proven to be an elusive goal.

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Section: Improving Nitrogen Use Efficiencymentioning

confidence: 99%

Meeting Cereal Demand While Protecting Natural Resources and Improving Environmental Quality

Cassman

Dobermann

Walters

et al. 2003

Annu. Rev. Environ. Resour.

885

476

View full text Add to dashboard Cite

show abstract

“…In northwest Taihu Lake Basin, farmers start adopting a new fertilisation strategy to improve nutrient management, based on site-specific nutrient management (SSNM; Dobermann et al 2002;Reidsma et al 2011). Farmers are stimulated to use, as locals call it, formula fertiliser.…”

Section: Assessing Pressures On Biodiversity At Field Level -Crop Manmentioning

confidence: 99%

“…Wang et al 2004), resulting in reduced terrestrial and aquatic biodiversity. Using formula fertiliser has potential to reduce N losses, but application according to principles of SSNM (Dobermann et al 2002;Hu et al 2007) needs to be improved through training. Survey data reveal that around 20% of the farmers currently use different formula of fertilisers, but they have not reduced the total amounts of nutrients applied.…”

Section: Crop Managementmentioning

confidence: 99%

“…In our case, biodiversity conservation was considered important by farmers (Table 2), but most of them do not realise that their management practices have environmental impacts. With improved SSNM, it is however possible to reduce fertiliser inputs and increase nutrient use efficiencies (Dobermann et al 2002). If improved training and education are successfully conducted, and SSNM is widely adopted by farmers within the region, the maximum value of MSA lm can be largely increased (Asai and Tokunaga 2007).…”

Section: The Multi-scale Cause-effect Approachmentioning

confidence: 99%

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Impacts of agricultural land-use changes on biodiversity in Taihu Lake Basin, China: a multi-scale cause–effect approach considering multiple land-use functions

Asai

Reidsma

Feng

2010

International Journal of Biodiversity Science, Ecosystem Servic

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This paper aims to assess the impacts of agricultural land-use changes on biodiversity in Taihu Lake Basin, China, and to identify possible conservation strategies. We used the mean species abundance (MSA) approach, building on simple causeeffect relationships between environmental drivers and biodiversity impacts at the global level. Our assessment estimated that 21% of the original species in the undisturbed ecosystem were present in 2000. We also analysed and reviewed agricultural pressures at different spatial scales to enable the development of conservation strategies at regional and farm levels. This analysis showed, first, that intensive crop management is reflected by the amount of fertilisers applied. Policies and technologies aiming to reduce environmental impacts have been ineffective. Second, the abundance of semi-natural elements was found to be low and the fragmentation high. To link agricultural pressures to the MSA approach, we propose a multi-scale cause-effect approach, which can be linked to other land uses. This approach is useful to provide a quick scan of biodiversity status and identify conservation strategies. Training farmers to use site-specific nutrient management should be stimulated. Furthermore, acknowledging multiple land-use functions will help to develop biodiversity conservation strategies that are acceptable to farmers and policymakers.

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“…Many high-yielding varieties have been released, and the introduction of novel genes has made significant progress (Matsuoka et al 2001;Surridge 2002), yet the practical impacts are limited. Some gains have come from a crop management approach, with site-specific crop management (SSCM) being introduced to attain better yields with reduced by optimized fertilizer input (Dobermann et al 2002). Dealing with water scarcity is also a challenge for the future in rice-growing regions.…”

Section: Introductionmentioning

confidence: 99%

Towards an understanding of the high productivity of rice with System of Rice Intensification (SRI) management from the perspectives of soil and plant physiological processes

Toriyama

Ando

2011

Soil Science and Plant Nutrition

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The System of Rice Intensification (SRI) is based on a set of practices such as transplanting young seedlings and aerobic soil management during the vegetative stage without using costly external input, which attracted rice researchers because of higher yields compared with conventional flooded practices. This review assesses some field data for SRI performance in light of current knowledge about certain agronomic practices, focusing particularly on nitrate production in aerobic paddy soil and the possible effect of differences in nitrate uptake on rice growth, as this could help explain some part of rice performance with SRI. Aerobic soil environments realized with SRI management might be favorable for nitrification as well as for the expansion of rhizosphere area, which could enhance nitrate uptake and boost the yield potential of rice. The effect of nitrate uptake and assimilation under SRI practice on dry matter production should be studied comprehensively to explore the possibility of breaking the yield ceiling of rice.

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Site-specific nutrient management for intensive rice cropping systems in Asia

Cited by 403 publications

References 42 publications

Meeting Cereal Demand While Protecting Natural Resources and Improving Environmental Quality

Meeting Cereal Demand While Protecting Natural Resources and Improving Environmental Quality

Impacts of agricultural land-use changes on biodiversity in Taihu Lake Basin, China: a multi-scale cause–effect approach considering multiple land-use functions

Towards an understanding of the high productivity of rice with System of Rice Intensification (SRI) management from the perspectives of soil and plant physiological processes

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