Effectiveness of herbicidal treatment of spring triticale crops in the Leningrad region

The high need for herbicidal treatment on spring triticale crops in the Leningrad region and the limited range of herbicides make research relevant to find effective drugs for use in this crop. According to the results of studies conducted in the fields of the Menkovsky branch of the Agrophysical Research Institute in the period 2021–2024, it was determined that the use of the herbicide Ballerina Super, SE at a rate of 0.3 l/ha during the tillering phase of spring triticale was an effective measure both in reducing the number of weeds and their phytomass. The decrease in the growth density and phytomass of perennial dicotyledonous species ranged from 52.7 to 80.9% and 82.7–97.3% over the years, and in juvenile dicotyledonous species — from 64.7 to 82.4% and 68.4 to 94.0%. According to the research results, a group of weed species sensitive to this herbicide has been identified, which include common shepherd’s purse, wild radish, white marsh, and field violet. The effect of increasing doses of nitrogen fertilizer did not lead to regular changes in the effectiveness of herbicide treatment. The value of the preserved crop from herbicidal treatment varied from 7.0–20.5% and only in one of the years, against the background of a thinned Swedish oatmeal, it amounted to 71%. The economic effect of the herbicide application was achieved mainly due to the increased density of the productive stem (by 2.2–59.6%), to a lesser extent — the mass of grain formed by the ear (by 1.7–8.5%).

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