Kanyenji George Magambo, Oluoch-Kosura Willis, Onyango Cecilia Moraa, Ng'ang'a Stanley Karanja
Department of Agricultural Economics, University of Nairobi, P.O. Box 29053-00625, Kangemi, Nairobi, Kenya.
Department of Plant Science and Crop Protection, University of Nairobi, P.O. Box 29053-00625, Kangemi, Nairobi, Kenya.
Heliyon. 2022 May 21;8(5):e09500. doi: 10.1016/j.heliyon.2022.e09500. eCollection 2022 May.
Improving agricultural productivity to improve food security and feed the future generation is needed. One of the ways to achieve this is by adopting low-cost solutions such as soil carbon enhancing practices (SCEPs). Given the complexity of adoption decisions, technologies are either adopted as substitutes or complements. A structured survey was utilized to collect data from 334 households in Western Kenya to estimate the impact of adopting SCEPs in combination and identify challenges hindering the adoption of the technologies. Two models, namely a multinomial endogenous treatment effect model and a multi-valued treatment effect model under conditional independence, were utilized to assess the impact of adoption on maize yield. Key variables established to influence adoption were literacy level, tenure security, and market participation. It was further revealed that adopting farmyard manure, intercropping, and a combination of intercropping and farmyard manure had a significant and positive impact on maize yield. This creates a need to promote the adoption of low-cost SCEPs to increase productivity and food security.
提高农业生产力以改善粮食安全并养活后代是必要的。实现这一目标的方法之一是采用低成本解决方案，如土壤碳增强措施（SCEPs）。鉴于采用决策的复杂性，技术要么作为替代品被采用，要么作为补充品被采用。通过一项结构化调查从肯尼亚西部的334户家庭收集数据，以估计采用土壤碳增强措施组合的影响，并确定阻碍采用这些技术的挑战。使用了两种模型，即多项内生处理效应模型和条件独立下的多值处理效应模型，来评估采用这些措施对玉米产量的影响。确定影响采用的关键变量是识字水平、土地保有权保障和市场参与度。进一步揭示，采用农家肥、间作以及间作与农家肥的组合对玉米产量有显著的积极影响。这就需要推广采用低成本的土壤碳增强措施，以提高生产力和粮食安全。
