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Open AccessArticle

Sulfoxaflor Applied via Drip Irrigation Effectively Controls Cotton Aphid (Aphis gossypii Glover)

1
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China
2
Key Laboratory of Natural Pesticide and Chemical Biology, South China Agricultural University, Guangzhou 510642, China
3
Department of Environmental Horticulture and Mid-Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Apopka, FL 32703, USA
*
Authors to whom correspondence should be addressed.
Insects 2019, 10(10), 345; https://doi.org/10.3390/insects10100345
Received: 5 September 2019 / Revised: 7 October 2019 / Accepted: 8 October 2019 / Published: 14 October 2019
Aphis gossypii Glover is a major pest of cotton and can severely affect cotton yield and lint quality. In this study, the efficacy of sulfoxaflor applied via drip irrigation and foliar spray on controlling cotton aphids was evaluated in 2016 and 2017 in Xinjiang, China. The distribution of sulfoxaflor in cotton roots, stems, leaves, and aphids, as well as its effects on two natural enemies of aphids, were also investigated. Results showed that sulfoxaflor applied through drip irrigation mainly concentrated in leaves and provided effective control of cotton aphids for 40 days, compared to 20 days when applied through foliar spray. Furthermore, drip application resulted in much lower sulfoxaflor concentrations in aphids than foliar spray. As a result, ladybird beetle and lacewing populations were higher in drip applied plants than in foliar sprayed plants. Additionally, the cost of drip irrigation was lower than foliar spray as cotton plants are commonly irrigated via drip irrigation in Xinjiang. Our results showed that application of sulfoxaflor through drip irrigation is an effective way of controlling cotton aphids in Xinjiang due to a prolonged control period, safety to two natural enemies, and lower cost of application. View Full-Text
Keywords: Aphis gossypii Glover; Chrysoperla sinica T.; Coccinella septempunctata L.; drip irrigation; natural enemy; sulfoxaflor Aphis gossypii Glover; Chrysoperla sinica T.; Coccinella septempunctata L.; drip irrigation; natural enemy; sulfoxaflor
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MDPI and ACS Style

Jiang, H.; Wu, H.; Chen, J.; Tian, Y.; Zhang, Z.; Xu, H. Sulfoxaflor Applied via Drip Irrigation Effectively Controls Cotton Aphid (Aphis gossypii Glover). Insects 2019, 10, 345.

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