[Dynamics of fiber flax weed infestation change in Belarus]
2008
Lapkovskaya, T.N. | Lobach, O.K., National Academy of Sciences (Belarus). Institute of Plant Protection
Itinerary inspections of fiber flax crops for studying the weed plant specific composition and their spread were done annually starting from 1996. In the article the dynamics of phytosanitary situation change in the crop is shown. The specific composition of weed plants based on the example of 2006 weed infestation is presented by 46 species belonging to 17 families, among them 13 species - perennial rhizome and sobole what makes 28,3% to the total number. Weed infestation of fiber flax before yield harvest remains high and several times increases the biological threshold of harmfulness for annual dicotyledonous species (6-15 pcs/m2). Also nigh number and occurrence of Polygonum spp, Matricaria inodora, Melandnum album, bonchus arvensis, Agropyron repens is marked. Based on the results of obtained results concerning weed infestation before harvest one can make a conclusion on the efficiency of protective measures and take it into account for the perspective coming by selecting plant protection means for the given crop against weeds
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