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Maize yield in smallholder agriculture system—An approach integrating socio-economic and crop management factors

Author: Dutta, S.
Author: Chakraborty, S.
Author: Goswami, R.
Author: Banerjee, H.
Author: Majumdar, K.
Author: Bin Li
Author: Jat, M.L.
Year: 2020
ISSN: 1932-6203 (Print)
Format: PDF
Language: English
Publisher: Public Library of Science
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Type: Article
Place of Publication: San Francisco, CA (USA)
Issue: 2
Issue: art. e0229100
Volume: 15
DOI: 10.1371/journal.pone.0229100
Description: Yield gaps of maize (Zea mays L.) in the smallholder farms of eastern India are outcomes of a complex interplay of climatic variations, soil fertility gradients, socio-economic factors, and differential management intensities. Several machine learning approaches were used in this study to investigate the relative influences of multiple biophysical, socio-economic, and crop management features in determining maize yield variability using several machine learning approaches. Soil fertility status was assessed in 180 farms and paired with the surveyed data on maize yield, socio-economic conditions, and agronomic management. The C&RT relative variable importance plot identified farm size, total labor, soil factors, seed rate, fertilizer, and organic manure as influential factors. Among the three approaches compared for classifying maize yield, the artificial neural network (ANN) yielded the least (25%) misclassification on validation samples. The random forest partial dependence plots revealed a positive association between farm size and maize productivity. Nonlinear support vector machine boundary analysis for the eight top important variables revealed complex interactions underpinning maize yield response. Notably, farm size and total labor synergistically increased maize yield. Future research integrating these algorithms with empirical crop growth models and crop simulation models for ex-ante yield estimations could result in further improvement.
Agrovoc: FARMS
Agrovoc: MAIZE
Agrovoc: SEED
Journal: PLoS ONE

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  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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