The seeds of common bean, like other leguminous plants have high contents of protein with high biological value. Weed management is one of the most important problems in dry bean production. The paper presents results of a field experiment on the effect of different methods of weed regulation on the seeds yield and protein content of common bean (‘Mela’ and ‘Aura’). The experiment was conducted in 2010–2012 on an individual farm located in Zamość district, Poland. The following methods of weed regulation were applied: A – no weeding, B – two-time weeding of inter-rows; C – Dual Gold 960 EC at 1.2 dm3 ha–1 + two-time weeding of inter-rows; D – Dual Gold 960 EC at 1.2 dm3 ha–1 + Basagran 480 SL at 2.5 dm3 ha–1 + Pantera 040 EC at 1 dm3 ha–1; E – Dual Gold 960 EC at 1.2 dm3 ha–1 + Basagran 480 SL at 1.25 dm3 ha–1 + Basagran 480 SL at 1.25 dm3 ha–1 + Pantera 040 EC at 1 dm3 ha–1. The highest seeds yield was obtained when three herbicides were applied (treatment E). Two-time inter-row weeding significantly increased the yield as compared to the unweeded control. But compared to herbicides, mechanical regulation was ineffective. This methods caused decreasing of seeds yield and protein content in comparison with chemical weed regulation.
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