Trung Nguyen T., Bui Vinh L., Lesueur Didier, Atieno Mary, Nguyen Cuong T., Sarobol Ed, Wongkaew Arunee, Nakasathien Sutkhet. 2022. Cassava-cowpea intercropping system for controlling soil erosion in the Northern mountainous areas of Vietnam. Asia-Pacific Journal of Science and Technology, 27 (5), 11 p.
|
Version publiée
- Anglais
Utilisation soumise à autorisation de l'auteur ou du Cirad. 611226.pdf Télécharger (1MB) | Prévisualisation |
Résumé : On sloping lands, cassava is a food crop that often promotes severe soil erosion. Moreover, repetitive monocropping of cassava dramatically increases soil erosion and reduces soil fertility. Intercropping, a key agroecological practice, effectively manages soil erosion by increasing soil cover and improving soil fertility. In 2017, a trial was set up in Mau Dong commune, Van Yen district, Yen Bai province, Vietnam, to evaluate the feasibility of intercropping cowpea into a cassava cropping system. The results showed strong feasibility for reducing soil erosion and maintaining cassava yield. In 2018, a follow-up field experiment was undertaken to assess the effects of a cassava-cowpea intercropping on the growth and yield of cassava, and its impact on soil and nutrient losses. A completely randomized design (CRD) was adopted with 3 replications composed of 4 treatments-cassava monocropped on gentle slope, cassava monocropped on steep slope, cassava-cowpea intercropped on gentle slope, and cassava-cowpea intercropped on steep slope. The results showed that intercropping cassava with cowpea on both gentle or steep slope fields significantly improved soil cover levels (2.2 level of cover out of 10 on gentle and 1.7 on steep), reduced soil erosion (40.0% gentle and 58.2% steep) and decreased nutrient losses (15.9-35.6% nitrogen, 0-18.8% phosphorus, and 14.8-22.5% potassium). Regression analysis revealed significant correlation between dry soil erosion, percentage of soil cover, and nutrients losses. The intercropping system enhanced cassava growth, yield, harvest index, and root dry matter. Thus, cassava-cowpea intercropping system shows great potential as a strategy for soil erosion control and sustainable agricultural production.
Mots-clés Agrovoc : culture intercalaire, agroécologie, érosion, lutte antiérosion, système de culture, fertilité du sol, manioc, rendement des cultures, province de Van, Fixation de l'azote, conservation des sols, Manihot esculenta, culture en mélange
Mots-clés libres : Cassava-cowpea intercropping, Cassava growth and yield, Nutrient losses, Sloping lands, Soil erosion
Agences de financement hors UE : Southeast Asian Regional Center for Graduate Study and Research in Agriculture, Académie de recherche et d'enseignement supérieur
Projets sur financement : (BEL) Assessment of how intercropped legumes helps restore degraded soils, improve crop yields and dampen red mite population build-up of herbivorous mites in cassava fields of northern Vietnam using digital soil mapping and GIS techniques
Auteurs et affiliations
- Trung Nguyen T., VNUA (VNM)
- Bui Vinh L., VNUA (VNM)
- Lesueur Didier, CIRAD-PERSYST-UMR Eco&Sols (VNM) ORCID: 0000-0002-6694-0869
- Atieno Mary, CIAT (VNM)
- Nguyen Cuong T., CIAT (VNM)
- Sarobol Ed, Kasetsart University (THA)
- Wongkaew Arunee, Kasetsart University (THA)
- Nakasathien Sutkhet, Kasetsart University (THA) - auteur correspondant
Source : Cirad-Agritrop (https://agritrop.cirad.fr/611226/)
[ Page générée et mise en cache le 2024-12-07 ]