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Light Interception and Radiation Use Efficiency of Cassava under Irrigated and Rainfed Conditions and Seasonal Variations

Author

Listed:
  • Supattra Mahakosee

    (Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Sanun Jogloy

    (Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
    Peanut, Jerusalem Artichoke, and Cassava Improvement Research Group, Khon Kaen 40002, Thailand)

  • Nimitr Vorasoot

    (Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Piyada Theerakulpisut

    (Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Carl Corley Holbrook

    (USDA-ARS, Crop Genetics and Breeding Research Unit, Coastal Plain Experimental Station, Tifton, GA 31793, USA)

  • Craig K. Kvien

    (Crop & Soil Sciences, The University of Georgia, Tifton, GA 31793, USA)

  • Poramate Banterng

    (Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand)

Abstract

Determining the effect of irrigated and rainfed conditions on light interception, light extinction coefficient ( k ), radiation use efficiency (RUE), biomass, and storage root accumulation of cassava was the objective of this study. The field experiment was arranged in a randomized complete block design (RCBD) with four replications. The effect of irrigated and rainfed water conditions in cassava were evaluated under two planting dates for two years. Light interception depended on k and LAI which affected solar radiation accumulation and thus biomass production for cassava. The k values ranged from 0.49 to 0.93 a nd 0.46 to 0.86 for irrigated and rainfed crops, respectively. The RUE bi and RUE sr depended on water conditions and crop growth stages and seasons, whereas rainfed crops in the May planting were slightly lower in RUE bi than irrigated crops. RUE bi of the crop planted in November was not significantly different for irrigated and rainfed crops. Irrigation at the late growth stage could maintain higher LAI, light interception, and RUE for the crop planted in May, whereas those in November planting were not significantly different.

Suggested Citation

  • Supattra Mahakosee & Sanun Jogloy & Nimitr Vorasoot & Piyada Theerakulpisut & Carl Corley Holbrook & Craig K. Kvien & Poramate Banterng, 2022. "Light Interception and Radiation Use Efficiency of Cassava under Irrigated and Rainfed Conditions and Seasonal Variations," Agriculture, MDPI, vol. 12(5), pages 1-14, May.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:5:p:725-:d:820751
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