2009•Russian Agricultural SciencesRequires access
Harmfulness of weeds in spring barley crops
Н. Г. Власенко, Т. П. Садохина
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Abstract
In multifactor field experiments a close correlation is found between yield losses of two barley varieties (two-row Acha and six-row Sobolek) and air-dry biomass of weeds per unit area and proportion of their participation in total phytomass of the plant community in the crop tillering stage. The economic threshold of harmfulness 5% of the weed assemblage is calculated for both varieties. The possibility of weed control at a safe level by sowing the crop early is shown.