Agriculture, Pêche et Aquaculture
Department of Agriculture, Aquaculture and Fisheries
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  Effect of Sprout Year Applications of Herbicides on Lamb's-Quarters Growth and Crop Yield within Wild Blueberry

G.L. Graham1, G. Chiasson2 and É. Thériault3

Parter: Bleuets NB Blueberries

Abstract: Lamb's-quarters (Chenopodium album L.) has unexpectedly begun to be problematic within managed wild blueberry production. Innovative herbicides for lamb's-quarters control were applied in the sprout year of a commercial blueberry field in the Lord and Foy region of New Brunswick. Imazamox and aminopyralid caused unacceptable crop injury at the application rates and timings evaluated. Mesotrione, sulfentrazone, hexazinone and, to a lesser extent, flumioxazin, gave control of lamb's-quarters when applied pre-emergent to weed growth. Mesotrione and mesotrione plus fluazifop-p-butyl both demonstrated high levels of weed control in both the sprout and crop years when applied post-emergent. Mesotrione, sulfentrazone and, to a lesser extent, flumioxazin should undergo further research to understand the weed control spectrum in blueberries to ensure these products would be valuable in current weed control practices.

1NB Department of Agriculture and Aquaculture, Crop Development Branch, P. O. Box 6000, Fredericton, NB E3B 5H1
2NB Department of Agriculture and Aquaculture, Regional Agri-Business Development, 1425 King Avenue Bathurst, New Brunswick E2A 1S7
3NB Department of Agriculture and Aquaculture, Regional Agri-Business Development, P. O. Box 3058, Tracadie-Sheila, NB, E1X 1G5

Agriculture, Aquaculture and Fisheries
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