THE EFFECT OF WEED CONTROL METHOD ON WEED INFESTATION AND YIELD OF BUCKWHEAT
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Abstract
Buckwheat is characterized by a high level of competitiveness against weeds but under certain conditions it can be strongly infested by weeds. A three-year study (2010–2012) was conducted as a field experiment in Experimental Station IUNG-PIB Osiny, the objective of which was to compare the biological method of weed control in buckwheat that relied on the use of winter rye as a catch-crop com- bined with mechanical weeding and chemical method (linuron-based herbicide). The herbicide-based control was found superior to the bi- ological method in terms of efficacy but it involved some damage to buckwheat plants. The reduction of weed infestation rate achieved by using rye as a catch crop varied from 28 to 92%, depending on weed species. In this treatment the growth of Viola arvensis, Anthemis ar- vensis and Polygonum convolvulus was the most strongly suppressed. The yield of seeds from the latter treatment was about 40% higher than that from the former.
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