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1 August 2018 Safety of Bicyclopyrone on Several Vegetable Crops and Efficacy of Weed Control
Yin Chen, Chengsong Hu, Douglas Doohan
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Abstract

Weed control in vegetable production is especially challenging, because few registered herbicides simultaneously offer excellent crop tolerance and broad-spectrum weed control. We report here the response of several vegetables and weeds to 37.5 and 50 g ai ha-1 of the new herbicide bicyclopyrone (BCP). Vegetable crops showed good tolerance to BCP PRE and post-directed (POST-DIR) in high organic matter content muck soil. POST BCP severely injured all crops. Soil type and the rate of BCP PRE significantly affected response of vegetable crops, and variety of onion was significant. POST BCP controlled hairy galinsoga and small common purslane plants (>80% injury). Hairy galinsoga was not controlled by BCP PRE application in muck soil but was controlled in a 2:3 (vol/vol) blend of Wooster silt loam and a commercial potting mix. Common purslane was slightly injured in the muck soil and was well controlled in the soil and potting mix blend by PRE BCP. The herbicide did not control prostrate pigweed in either soil type or at any growth stage.

Nomenclature: Bicyclopyrone; common purslane, Portulaca oleracea L.; hairy galinsoga, Galinsoga quadriradiata Cav.; prostrate pigweed, Amaranthus blitoides S. Wats.; onion, Allium cepa L.

© Weed Science Society of America, 2018.
Yin Chen, Chengsong Hu, and Douglas Doohan "Safety of Bicyclopyrone on Several Vegetable Crops and Efficacy of Weed Control," Weed Technology 32(4), 498-505, (1 August 2018). https://doi.org/10.1017/wet.2018.26
Received: 27 June 2017; Accepted: 3 May 2018; Published: 1 August 2018
JOURNAL ARTICLE
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KEYWORDS
herbicide tolerance
soil types
vegetables
weed control
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