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Adoption and impact of fertiliser trees on heterogeneous farmer classified soil types in the Chongwe district of Zambia

机译：赞比亚崇威区异质农民分类土壤类型采用和影响

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摘要

Adoption of fertiliser trees in Zambia remains very low while efforts to understand the farmers' decision-making process in embracing sustainable agricultural practices still eludes research. One area not vigorously pursued in understanding the farmers' adoption process is the role that farmer classification of on-farm soils plays in adoption and impact of sustainable technologies such as the fertiliser trees. Therefore, the objective of this study was to estimate adoption rates and impact of fertiliser trees on heterogeneous soil types according to farmers' classifications. Using data randomly collected from 324 households in the 2011 farming season in Chongwe district of Zambia, it was found that farmers were able to classify the dominant soils on their farms into sandy, clay, sand loamy and loamy soils. Most of the farmers (60%) who perceived their soils to be sandy also indicated facing soil fertility challenges. Perception of being on sandy soils was significantly associated with adoption of the fertiliser trees. Propensity score estimates showed that the technology significantly increased maize productivity on soils perceived to be sandy and sand loamy. The non-significant impact results of the technology on relatively perceived high fertile loamy and clay soils could be indicative of diminishing marginal effect of the technology on already fertile soils. Although adoption of the technology on relatively fertile soils is important for fertility sustainability, its promotion on farms with degraded soils could ensure full expression of its potential, and hence, increase its adoptability chances. Targeting of farmers who receive fertiliser tree seedlings should embrace this condition.
机译：赞比亚采用肥料树仍然很低，同时努力了解农民的决策过程，在拥抱可持续的农业习俗仍然露出研究。在理解农民通过过程中没有大力追求的一个区域是农场土壤的农民分类在采用和影响等肥料树等中发挥的作用。因此，本研究的目的是根据农民分类估算肥料树木对异质土壤类型的采用率和影响。在赞比亚崇威区的2011年农业赛季中随机收集的数据，发现农民能够将他们的农场上的主要土壤分类为沙质，粘土，沙壤土和壤土。将土壤感知到桑迪的大多数农民（60％）也表明了土壤生育挑战面临。在采用肥料树上，对砂土的感知与施肥树显着相关。倾向评分估计表明，该技术显着提高了玉米和沙子壤土的土壤上的玉米生产率。对相对感知的高肥沃植物和粘土土壤的技术的非显着影响结果可能表明，在已经肥沃的土壤上的边际效应递减。尽管采用了对肥沃土壤的技术对生育能力的重要性，但其对具有退化土壤的农场的促销可以确保充分表达其潜力，从而提高其所需的机会。接受肥料树幼苗的农民的目标应该拥抱这种情况。

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