Herbicides tested for blackberry knockdown
Trials with herbicides for blackberry control in Northland have so far shown that a mixture of 2,4,5-T and Picloram is most effective for a spring application. The trials are part of an on-going spray programme being carried out by Ministry of Agriculture and Fisheries research staff in Northland. For the past 18 months a range of currently-available and new herbicides have been tested at two times <■' spraying (April and Novem ber).
The pattern of results from all four test sites has been similar, although regrowth results from springtreated plots has been found to be variable between sites. Autumn spraying of both Triclopyr and 2,4,5-T plus Picloram achieved complete knockdown in September, while best regrowth suppression came from Glyphosate. In terms of both knockdown and regrowth suppression from autumn application, the mixture of 2,4,5-T and Picloram was best
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Press, 10 December 1982, Page 22
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142Herbicides tested for blackberry knockdown Press, 10 December 1982, Page 22
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