After-effect of foliar-applied herbicides for broad-leaved weeds on the primary root weight of cotton seeds (Gossypium hirsutum L.)
Keywords:
cotton; cultivars; foliar treatment; herbicides; primary root weightAbstract
The trial was carried out during 2013-2015 in the Field Crops Institute – Chirpan, under rainfed conditions, on leached vertisol soil type, with twelve cotton cultivars (Gossypium hirsutum L.). Influence of herbicides Bazagran 480 SL (bentazone), Pulsar 40 (imazamox) and Express 50 VG (tribenuron-methyl) was studied. These herbicides were used during the budding stage of cotton. From the viewpoint of cotton growing technology, the most valuable are all cultivars, by foliar treatment with herbicide Bazagran 480 SL. Technologically the most valuable are cultivars Chirpan-539, IPK-Veno, Boyana, Natalia, Darmi, Dorina by foliar treatment with herbicide Pulsar 40. These variants combine high primary root weight and high stability of this index during the different years. None of the cultivars does not received high evaluation by foliar treatment with herbicide Express 50 VG.
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