Study regarding the influence of some allelopathic species in weed control on a climbing bean crop

Abstract

The aim of the present work was to evaluate the influence of some allelopathic species in weed control. Field experiments were conducted to assess the allelopathic potential of five species. Two experimental variants have been studied. The first variant was represented by the mix of species with allelopathic properties sown in the intercropping system with “Auria Bacăului” climbing bean (Phaseolus vulgaris). The species with allelopathic properties used were white clover (Trifolium repens), red clover (Trifolium pratense), birdsfoot trefoi (Lotus corniculatus) and parsley (Petroselinum crispum). The second variant was represented by the intercropping of barley (Hordeum vulgare) and climbing bean. Before mowing/ hoeing the degree of weed infestation was on average 59% for mixture variant, 23% for barley variant and 94% for control. After mowing/hoeing the results highlighted 21% weeds in mixture variant, 52% in barley variant and 82% for control.