Influence of weed control systems on the formation of the assimilateral surface of sunflower plants leaves

Authors

DOI:

https://doi.org/10.33730/2310-4678.1.2025.324369

Keywords:

leaf surface area, protection systems, herbicides, duration of sunflower growth phases, EuroLightning, Express, hybrids, NK Neoma, NK Condi, Sumiko HTS

Abstract

Sunflower is the main oilseed crop in our country, accounting for almost 65% of oilseed crops and 15% of all sown areas. In recent years, the area of sunflower crops in Ukraine has grown to 6 million hectares, which has contributed to the production of high-quality seeds. In this regard, research aimed at studying and finding various ways to increase the environmental efficiency of growing this crop is becoming relevant. The article presents the dynamics of the formation of the duration of interphase periods and the surface area of the leaf apparatus in sunflower hybrids under different systems of plant protection from weeds. The change in the area of the assimilation surface of sunflower plants during the growing season of medium-early hybrids NK Kondi, NK Neoma, Sumiko HTS in the conditions of the Right-Bank Forest-Steppe of Ukraine was studied. The results of scientific observations of sunflower crops in 2020–2022 were highlighted. The newest, traditional and most common models of plant protection from weeds in sunflower cultivation were analyzed. The leaf surface area of sunflower plants and the features of its changes under different protection systems were determined. The influence of different plant protection systems in extreme climatic conditions of cultivation was revealed, which in turn necessitates the improvement of cultivation technologies for each hybrid separately, taking into account its genetic capabilities and the specifics of the region. It was established that when using the New Synthetic and Euro-Lightning protection systems, the full onset of development phases occurred 1–2 days later compared to the ecological protection option. The need for additional research into the development biology of new intensive-type sunflower hybrids when grown under new synthetic weed protection systems was substantiated. The results of changes in the assimilation surface of the leaf surface of sunflower hybrids under traditional, Euro-Lighting, Express and ecological plant protection systems are presented.

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Published

2025-02-24

Issue

No. 1 (2025)

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Articles

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