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Economics of film antitranspirant application: a new approach to protecting wheat crops from drought-induced yield loss

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  • Kettlewell, Peter

Abstract

Drought is a major cause of economic loss to the world’s wheat growers; estimated at up to US$20 billion (£12.5 bn) in 2000. Film antitranspirants are polymers applied to foliage to reduce water loss and have recently been shown to increase droughted wheat yield. This increase is linearly related to the drought severity (soil moisture deficit [SMD]) at the time of application. This paper demonstrates how this linear relationship can be used to calculate an economic threshold SMD, above which an economic yield response should be obtained, from spray cost and expected grain price. This will enable agronomists and growers to make a clear decision on the cost-effectiveness of spraying to protect from drought damage. Sensitivity analysis shows that using the correct spray decision threshold SMD is especially important when the wheat grain price is expected to be low.

Suggested Citation

  • Kettlewell, Peter, 2011. "Economics of film antitranspirant application: a new approach to protecting wheat crops from drought-induced yield loss," International Journal of Agricultural Management, Institute of Agricultural Management, vol. 1(1), pages 1-3.
    • Handle: RePEc:ags:ijameu:149907
    DOI: 10.22004/ag.econ.149907
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    Cited by:

    1. Mphande, Wiza & Kettlewell, Peter S. & Grove, Ivan G. & Farrell, Aidan D., 2020. "The potential of antitranspirants in drought management of arable crops: A review," Agricultural Water Management, Elsevier, vol. 236(C).

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