Uman NUH | today: 12/22/2024
| Author(s) | Красноштан В. І., , , | ||
|---|---|---|---|
| Category | The Agronomy | ||
| year | 2022 | issue | Issue number 101. Part 1 |
| pages | 155-163 | index UDK | 633.17:[632.954+631.8] | DOI | 10.32782/2415-8240-2022-101-1-155-163 (Link) |
| Abstract | The use of herbicides is an integral part of most technologies for growing grain crops, including grain sorghum. However, taking into account the potential negative impact of herbicides not only on weeds, but also on cultivated plants, in recent years, the direction of biologization, which involves the use of plant growth regulators and biological preparations of natural origin, has been actively developing in the technologies of growing agricultural crops. The compositional effect of such preparations on cultivated plants, in particular on their anatomical and morphological indicators, was poorly studied, which determined the relevance of our research. The effect of the herbicide Cytadel 25 OD, the plant growth regulator Endophyt L1, and the biological preparation Bioarsenal on the parameters of the cell structure of the epidermis of grain sorghum leaves (Sorghum bicolor (L.) Moench) was studied in the laboratory conditions of the Department of Biology of the Uman National University of Horticultural in 2019–2021. As the result of research, it was found that the optimal anatomical structure of the epidermis of the leaves with signs of mesomorphism was formed in the variants of the experiment, where the herbicide Cytadel 25 OD was used in mixtures with the plant growth regulator Endophyt L1 on the background of pre-sowing seed treatment with Bioarsenal. Under these conditions, the area of leaf epidermis cells increased by an average of 358.7 μm2 with a morphostructure coefficient of 0.82–0.88. The most productive structure of the epidermis of leaves with signs of mesomorphism of the leaf apparatus (morphostructure coefficient 0.82–0.88) is formed by treating grain sorghum crops with the herbicide Citadel 25 OD at rates of 0.6; 0.8 and 1.0 l/ha in combinations with PRR Endophyte L1 on the background of pre-sowing seed treatment with Bioarsenal. Under these conditions, the number of cells per 1 mm2 of the epidermis decreases by an average of 15.1 % compared to the control, and their area, at the same time, increases by an average of 60.3 %. | ||
| Key words | Sorghum bicolor, cells area, biologisation, herbicide, plant growth regulator, biopreparation, coefficient of morphostructure | ||