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Plant growth regulators on winter wheat – yield benefits of variable rate application

Published online by Cambridge University Press:  01 June 2017

S. Griffin  and
J. Hollis
S. Griffin*
Affiliation:
SOYL, Kennetside, Newbury, Berks, UK, RG14 5PX
J. Hollis*
Affiliation:
SOYL, Kennetside, Newbury, Berks, UK, RG14 5PX
*
† E-mail: simong@soyl.co.uk; jeremy.hollis@soyl.co.uk
† E-mail: simong@soyl.co.uk; jeremy.hollis@soyl.co.uk
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Abstract

The use of plant growth regulators (PGRs) on winter wheat in the UK is a common practice. Significant yield benefits can be gained from its use. For the most efficient use of PGRs the rates of application must be matched to the crop canopy. The variation of crop growth was monitored during the spring growing season using vegetation indices derived from satellite imagery. Application rates of PGRs were matched to changes in biomass as measured by the imagery. Final yields were measured using a GPS combine yield meter. The variable application showed an average yield benefit of 0.4 t/ha over the uniform full recommended application rate.

Keywords

biomassplant growth regulatorssatellite imageryvariable rate application

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References

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