Western flower thrips control with neonicotinoid-treated lettuce seed, 2022

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Abstract
The objective of this trial was to evaluate the efficacy of clothianidin (NipsIt; Valent USA) seed treatment to control western flower thrips (WFT) in lettuce under desert growing conditions. Commercially treated with clothianidin and untreated romaine lettuce ‘Del Sol’ seed was direct seeded on 23 Feb 2022 at the Yuma Agricultural into beds on 42-inch centers with 2 seed lines per bed. All seeds were planted at a 2-inch spacing. Stand establishment was achieved using overhead sprinklers and irrigated with furrow irrigation thereafter. Plots were 2 beds wide by 35 ft long and bordered by 2 untreated beds. Four replications of each treatment were arranged in an RCB design. No other insecticides were applied during the trial.
Funding Information
  • Arizona Iceberg Lettuce Research Council