To obtain high yields of winter wheat, it is important to control the contamination of crops with weeds. It is known that yield losses can be 30% or more due to the presence of segetal vegetation in wheat crops. With intensive technology of growing winter wheat, the chemical method of protection against weeds is an extremely important element. The paper highlights data on the species composition and class of contamination of winter wheat agrocenosis. The effectiveness of herbicides and their tank mixtures in winter wheat crops to reduce the presence of the weed component, increase grain yield and quality in the conditions of Luginsky District of Zhytomyr region on sandy loam soils during 2019-2021 was studied. It is established that the structure of the weed component of agrophytocenosis of winter wheat in farm conditions is dominated by dicotyledonous weed species, namely: field mustard (Sinapis arvensis L.), wild radish (Raphanus raphanistrum L.), wild pansy (Viola tricolor L.), shovelweed (Capsella bursa-pastoris L.), toadpipe (Equisetum arvense L.), and blue bottle flower (Centaurea cyanus L.), the share of which is 64.8%. Graminaceous species of weeds are represented by silky bent grass (Apera spica-venti L.), couch-grass (Elytrigia repens L.), rye brome grass (Bromus secalinus L.). The technical efficiency of the studied herbicides with the separate and joint application was in the range of 60.8-94.6%. The highest indicator of technical efficiency of herbicides in winter wheat crops, which is 94.6%, was obtained in an experiment using a tank mixture of Granstar Pro 75 + Apiros 75 preparations, with norms of 0.025+0.013 kg/ha, as well as an increase in wheat grain yield by 2.0 t/ha compared to the contaminated control. Spraying winter wheat crops with herbicides during the growing season allows improving the quality indicators of the grain yield structure. In particular, the content of protein and fibrin increases by 1.1 times; the moisture content of grain decreases by 1.0-1.1 times, and the content of dirt impurity decreases by 2.8-6.7 times, compared to the control version
Goal. The goal of the research is to study the effectiveness of biological preparation made on the basis of fungi of the genus Trichoderma (T. hamatum) (isolated from the mixed forests ground litter in Zhytomyr region) against the causative agent of sugar beet black rot (Fusarium oxysporum, Fusarium culmorum, Fusarium solani, Fusarium javanicum and Rhizoctonia solani); to determine the most effective way of application of the examined strain of the fungus against the sugar beet black rot agents; to study its influence on the initial plant growth and development as well as the indices of sugar beet productivity. Methods. The methods used during the research work include field studies, laboratory studies, field and laboratory studies. The field tests were conducted in the conditions of Uladovo-Liulynetska experimental plant selection station. The sugar beet black rot agents wereselected and identified in the laboratory of the Department of Plant Protection of Zhytomyr National Agroecological University. Results. It has been ascertained that the application of the fungus strain T. hamatum ZH-6 against the sugar beet black rot agents directly into the soil during the sugar beet cropping proved to be the most effective way of its usage. The simultaneous application of T. hamatum ZH-6 with row fertilizers leads to an increase in the density of sugar beet seedlings by 0,6pieces per linear meter in the phase of the first pair of leaves, and by 1.1 pieces per linear metering the phase of the second pair of leaves, compared to the control variant. The application of the fungus strain T. hamatum ZH-6 contributes to a decrease in the degree of development of black rot in sugar beet seedlings by 31.9% as compared to the control variant. However, it`s efficiency is 10.4% lower than that one obtained from the seed treatment with the chemical Tachigaren, 70%WP. The extra yield of sugar beets under condition of simultaneous application of Trichoderma hamatum ZH-6 strain with the row fertilizers amounts to 6.2 t/ha in comparison with the absolute control. Conclusions. It has been proved that the use of the strain of the fungus T. hamatum ZH-6 by means of its application into the soil during sowing allows to protect sugar beets from the black rot agents and obtain a yield increase in the range of 6.2 t/ha.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.