Aspects of barley physiology treated with als herbicides
2020
Ionescu, Nicolaie
Preservation of environment is a necessity, as well as ensuring the sustainability characteristics of agricultural production (Abeledo et al., 2002). Such measures require the use of herbicides as closely as possible. In this paper we refer to some herbicides belonging to ALS group. Lately, they have been used incorrectly, not recommended, in winter barley crop. Excessive infestation with new, invasive, monocotyledonous species from genus: Avena, Apera, Bromus, Lolium, Vulpia, was found in the practice. Against this, there are currently no sustainable control solutions in this crop. Although it was known that some products from this group of herbicides are not recommended for the treatment of barley, farmers have tried them, even at the risk of predicted adverse effects. The negative effects were obvious. Winter barley does not have the enzymatic equipment necessary to metabolize it, and the plants suffer. To highlight such phytotoxic phenomena, some investigations have been carried out. Thus, compared to untreated ALS barley, the plants showed a smaller size of 20-25 cm, the weight of the ears was less with 1.1 g, they formed with 15 grains less in an ear, the sterility increased by 50%, and TGW-thousand grain weight was reduced by 10 grams. Lack of barley selectivity for such treatments can cause significant production losses, both total and grain. It is currently working to find active ingredients with total selectivity for winter barley.
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