Agroecosystem Diversity 2019
DOI: 10.1016/b978-0-12-811050-8.00003-0
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C–N–P Decoupling Processes Linked to Arable Cropping Management Systems in Relation With Intensification of Production

Abstract: C-N-P decoupling processes linked to arable cropping management systems in relation with intensification of production

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Cited by 12 publications
(10 citation statements)
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“…Concerning the first objective, i.e., reducing the use of synthetic fertilizers and reducing nutrients losses and their impact on environment, the options proposed aim to maintain the elemental ratio of crops and crop products by introducing (again) N by symbiotic fixation in rotations, increasing N and P recycling through organic wastes and animal manure as substitutes to synthetic fertilizers, improving synchronisms between soil supplies and crop requirements (notably through permanent soil cover by plants), and by diversifying crops both in space and time to combine their different abilities to capture resources and to produce different "after-life" plant debris (shoots and roots) (Bedoussac et al 2015;Duru et al 2015). All these practices are options that promote the coupling of C and nutrient cycles on the one hand through the presence of vegetation and on the other hand through the constant solicitation of the heterotrophic microbial community that ensures mineralization-immobilization turnover during the degradation of above-ground and below-ground litters, rhizodeposits and organic wastes (Hufnagl-Eichiner et al 2011) Therefore C management combined with stoichiometry homeostasis constraints of microbial communities and SOM can be viewed as opportunity to move from open and leaky farming systems to "closed" systems with reduced losses (Recous et al 2019).…”
Section: Stoichiometric Constraints On Agroecological Practicesmentioning
confidence: 99%
“…Concerning the first objective, i.e., reducing the use of synthetic fertilizers and reducing nutrients losses and their impact on environment, the options proposed aim to maintain the elemental ratio of crops and crop products by introducing (again) N by symbiotic fixation in rotations, increasing N and P recycling through organic wastes and animal manure as substitutes to synthetic fertilizers, improving synchronisms between soil supplies and crop requirements (notably through permanent soil cover by plants), and by diversifying crops both in space and time to combine their different abilities to capture resources and to produce different "after-life" plant debris (shoots and roots) (Bedoussac et al 2015;Duru et al 2015). All these practices are options that promote the coupling of C and nutrient cycles on the one hand through the presence of vegetation and on the other hand through the constant solicitation of the heterotrophic microbial community that ensures mineralization-immobilization turnover during the degradation of above-ground and below-ground litters, rhizodeposits and organic wastes (Hufnagl-Eichiner et al 2011) Therefore C management combined with stoichiometry homeostasis constraints of microbial communities and SOM can be viewed as opportunity to move from open and leaky farming systems to "closed" systems with reduced losses (Recous et al 2019).…”
Section: Stoichiometric Constraints On Agroecological Practicesmentioning
confidence: 99%
“…Increased use of DAP fertilizer relative to TSP might be another key reason for the recent increased use of P and decreased use of N in the study areas. If this type of subsidy scheme is not supervised efficiently, P overdosing could continually increase in the near future, which will not only be an inefficient use of Government investments but also could be a threat to water quality by increasing P export to waterways (Recous et al 2019 ).…”
Section: Discussionmentioning
confidence: 99%
“…Unbalanced (overuse or underuse) nutrient use relative to the government recommendations is a global concern that contributes to crop yield gaps, with many examples in developing and least-developed countries that demonstrate lost opportunities for increased farm income and a threat to sustainable agriculture due to harmful off-site losses of nutrients (Dobermann et al 2021 ). Overuse of one or more nutrients leads to wastage of nutrients and increased risk of environmental losses (Miao et al 2011 ; Recous et al 2019 ). On the other hand, 30–40% crop yield increase could be achieved through balanced (recommended) nutrient use practice in India (Murthy et al 2015 ).…”
Section: Introductionmentioning
confidence: 99%
“…could be addressed via this income pathway. The CBE model would also ensure that waste does not become an environmental problem in towns, where it harbours pathogens that threaten human health, emits greenhouse gases (GHG), or pollutes air, and thus lower the environmental quality necessary for proper human health [ 12 , 19 ]. The use of organic compost from recycled waste could also reduce the need for inorganic fertilizers, thus reducing costs on buying fertilizers [ 20 ].…”
Section: Introductionmentioning
confidence: 99%
“…However, most farmers and consumers in Africa are familiar with the linear model (produce food, and take it to consumption areas like towns and leave the waste to be disposed of there without being reused where food was produced), and view organic waste as valueless [ 19 , 21 ]. Furthermore, in some communities, even in rural areas, it is perceived as against social and cultural norms to harvest waste as a resource, especially human waste [ 22 ].…”
Section: Introductionmentioning
confidence: 99%