Nutrient management practices and benefits in Conservation Agriculture systems

Boulakia Stéphane, Tivet Florent, Husson Olivier, Séguy Lucien. 2020. Nutrient management practices and benefits in Conservation Agriculture systems. In : Advances in conservation agriculture. Volume 2: Practice and benefits. Kassam Amir (ed.). Cambridge : Burleigh Dodds Science Publishing, 169-197. (Burleigh Dodds Series in Agricultural Science, 62) ISBN 978-1-78676-268-9

https://doi.org/10.19103/AS.2019.0049.06

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Résumé : Nutrient cycling is considered as a key agroecosystem service of Conservation Agriculture (CA). CA brings together major nutrients and organic matter fluxes within the soil-micro-organism-plant system. It also generates organic and inorganic nutrient pools accessible through new biological pathways. This chapter addresses nutrient management practices and benefits in CA systems. Current trends in CA systems design are discussed, as is integrated nutrient management. The concept of the “forest model” is introduced and discussed in detail. Sections on nutrient pools, bioavailability of elements, and mineral use efficiency in CA systems are also included. The chapter concludes with two case studies from contrasting agroecosystems: one from a Brazilian Fazenda transitioning from "generic" CA to CA based on multifunctional mix species cover, and one from a French dairy farm, illustrating how CA, associated with important and diversified organic matter inputs from cover crops and crop residues, impacts and modifies plant nutrition management.

Mots-clés Agrovoc : agriculture de conservation, système d'exploitation agricole, gestion des éléments nutritifs, gestion intégrée des éléments nutritifs des plantes, cycle des nutriments, fertilité du sol, agroécosystème

Mots-clés libres : Conservation agriculture, Impact, Review, Practices

Classification Agris : F08 - Systèmes et modes de culture
P35 - Fertilité du sol
F60 - Physiologie et biochimie végétale

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