The symbiotic relationship between the legume (pea) and the bacteria housed in the nodes of its root system enables the plant to fix atmospheric nitrogen, thereby allowing it to meet its nitrogen nutrient requirements. ![]() This system aims to establish two crops that are complementary in nutritional and morphological terms. It promotes a certain ecological intensification through which one can ensure a quantitative dry matter yield equivalent to that produced by the same two pure crops while increasing protein yield and reducing nitrogen fertilization. The results of this review help to identify priorities that actors of the value chain can address to better focus their efforts on significant problems and solutions that can accelerate the adoption and dissemination of this agroecological system.Ĭereal–legume intercropping using crops such as wheat and pea represents one of these diversification systems. However, the value chain resulting from the wheat–pea intercropping system has levers to be exploited at all levels, particularly in terms of its competitive advantages, ecosystem benefits, and superior product quality. ![]() ![]() The present review shows that structuring the value chain around the products of this innovative cropping system faces a set of technical (i.e., varietal selection, phytosanitary issue control, crop management sequence, collection management, and storage), economic (i.e., cost, price, market opportunities, and contracting), and public policy (i.e., subsidies for ecosystem services provided by intercropping) obstacles that contribute to its slow adoption and dissemination in Europe. Beyond the ecosystem benefits of diversification through wheat–pea intercropping, this review analyzes the barriers and levers to its adoption and diffusion.
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