Oumer Ali Mohammed, Burton Michael, Kassie Menale
Agricultural and Resource Economics, UWA School of Agriculture and Environment, University of Western Australia, Crawley, WA, Perth, Australia.
Ethiopian Institute of Agricultural Research (EIAR), Addis Ababa, Ethiopia.
PLoS One. 2025 Feb 7;20(2):e0314172. doi: 10.1371/journal.pone.0314172. eCollection 2025.
Applying an intertemporal multivariate probit model, we reveal complex complementarity and substitution effects as well as new insights on the drivers of adopting input-intensive and natural resource management (NRM) practices in rural Ethiopia. First, the latent factor that drives each practice is positively and significantly correlated across time, suggesting persistency in adoption decisions. Second, the significant synergies and tradeoffs between the input-intensive and NRM practices underscore that these practices are highly compatible and, hence the importance of promoting technology packages. Third, the covariates that drive adoption significantly differ between practices, reflecting the heterogeneity in farmer behavior. Farm size was associated with the adoption of several input-intensive and NRM practices while off-farm income has the reverse effect. These findings have significant implications for food security policy in sub-Saharan Africa.
运用跨期多元概率单位模型,我们揭示了复杂的互补和替代效应,以及关于埃塞俄比亚农村地区采用投入密集型和自然资源管理(NRM)实践的驱动因素的新见解。首先,驱动每种实践的潜在因素在不同时间呈正相关且显著相关,这表明采用决策具有持续性。其次,投入密集型和NRM实践之间显著的协同效应和权衡凸显了这些实践具有高度兼容性,因此推广技术组合很重要。第三,驱动采用的协变量在不同实践之间存在显著差异,反映了农民行为的异质性。农场规模与采用多种投入密集型和NRM实践相关,而非农收入则有相反的影响。这些发现对撒哈拉以南非洲的粮食安全政策具有重要意义。