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Agronomy, Volume 8, Issue 6 (June 2018)
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Cover Story (view full-size image) To improve the effect of defoliation and reduce the losses caused by boom sprayer rolling, the [...] Read more. To improve the effect of defoliation and reduce the losses caused by boom sprayer rolling, the effect of defoliant dosage on defoliation, boll opening, absorption, and decontamination in cotton leaves and the effect of spraying volume on absorption and decontamination in cotton leaves sprayed by UAVs were studied. The pooled results indicate that plant protection UAVs could be used for cotton defoliants spraying with a twice defoliant spraying strategy, and the defoliant dosage has no significant effect on seed cotton yield and fiber quality in Xinjiang, China. Our research results could provide a reference for the further optimization of the spraying parameters of cotton defoliant using plant protection UAVs. View this paper