Relevance of the sugar beet nematode number control in modern agrocenoses of the right-bank Forest-Step of Ukraine
Year: 2024
Type: article
Abstract: Purpose. To establish the effectiveness of treating sugar beet seeds with insecticides in limiting the development of heteroderosis in modern agrocenoses of the right-bank Forest-Steppe of Ukraine. Methods. General scientific ones: scientific hypothesis, experiment, observations, analysis, field research, laboratory analysis, mathematical and statistical analysis. Results. The cyst-forming beet nematode Heterodera schachtii Schmidt, which belongs to the ecological-trophic group of phytohelminths and is the causative agent of heteroderosis, is widely distributed in all beet-growing zones of Ukraine. At high population density (over 250- 300 eggs and larvae per 100 cm3 of soil), root crop losses can reach 65% or more. Microscopic size, rapid reproduction, long-term (up to 9 years) viability, resistance to abiotic factors greatly complicate effective control of the pathogen's population, which makes the existing integrated method of protection insufficient against the background of global changes in modern agrocenoses and necessitates the strengthening of its chemical component. Treatment of beet seeds with insecticides and their compositions makes it possible to reduce the population density of the first generation of the pathogen, the most dangerous for young plants, by 53.7-62.6%, which, despite its subsequent recovery, allows saving the plant density from excessive thinning at the time of harvesting by 4.1-9.1 thousand pcs/ha and reduce the yield losses of root crops by 2.6-9.9 t/ha, sugar production – by 1.3-1.72 t/ha. Conclusions. Treatment of sugar beet seeds with insecticides and their compositions is a fairly effective measure in limiting the density of the most harmful first generation of beet nematode, which allows saving a significant part of the crop from losses in modern agrocenoses, reduce the population density of the first generation by 60-62%.
Source: Feeds and Feed Production
Author: L. Suslyk
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W4407130362