Efficiency of application of soil herbicides on sunflower crops

Authors

DOI:

https://doi.org/10.31548/dopovidi.3(109).2024.008

Keywords:

productivity, herbicides, weeds, chemical protection, agrocenosis

Abstract

The selection of the optimal scheme for the protection of sunflower crops is always relevant, since the protection of crops from weeds is very important and has a direct impact on the productivity of the crop. The goal is to determine the effect of soil herbicides on weediness of sunflower crops. Determining the effectiveness of various options for herbicide protection. Applied materials and methods: field experiment, laboratory, analysis, processing and generalization of data. The results of the application of different options of herbicide protection on the yield of sunflower of the right-bank forest-steppe of Ukraine are presented. It was determined that the experimental plots had a small-year type of weeding and an average degree of weeding. Among chemical protection, the best efficiency was recorded when using the soil herbicide Challenge at the rate of 5 l/ha, the efficiency compared to the control was 86.7%. It is worth noting that the efficiency of the reference herbicide Primekstra TZ Gold at the rate of 4.5 l/ha was 69.7%. The level of destruction of segetal vegetation on other variants of herbicide use ranged from 65.8% to 78.9% 14 days after application. The use of the drug Challenge at the rate of 2.5 l/ha in combination with Prometrex, Racer and Aspect Pro showed average efficiency and ranged from (61.0 to 55.3%). A decrease in the application rate of the drug Challenge - 2.5 l/ha in tank mixtures led to the growth of dicotyledonous weeds. It was established that the highest yield of 3.8 t/ha has the option of using the soil herbicide Challenge with a rate of 5.0 l/ha. In comparison with the control, an increase of 0.6 t/ha is recorded. A significantly lower level of sunflower productivity was obtained with the introduction of tank mixes Prometrex - 1.5 l/ha + Aspect Pro - 2.0 l/ha and Racer - 1.5 l/ha + Aspect Pro - 2.0 l/ha. A promising direction for further research is the study of the impact of herbicide protection on sunflower productivity and the effectiveness of segetal vegetation.

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Published

2024-06-28

Issue

No. 3/109 (2024)

Section

Agronomy

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