EFFECT OF HERBICIDES ON MORPHOMETRIC, PHENOLOGICAL, AND PHOTOSYNTHETIC PARAMETERS OF SOLIDAGO CANADENSIS L.
DOI:
https://doi.org/10.32636/agroscience.2026-(5)-2-6Keywords:
herbicides, morphometric traits, photosynthetic activity, phenology, systemic control, invasive plants, Western Forest-Steppe of UkraineAbstract
The aim of this study was to evaluate the effects of different herbicides on the morphophysiological traits of Solidago canadensis L., including plant height, stem diameter, leaf area, number of regenerating shoots, and photosynthetic activity. The research was conducted from 2020 to 2025 in natural phytocenoses of the Western Forest-Steppe of Ukraine. Herbicide treatments were applied during the rosette stage and early phases of intensive vegetative growth to assess the maximum biological effect of systemic herbicides. The control variant did not involve the use of chemical agents. Results showed that all tested herbicides suppressed the morphometric parameters and photosynthetic activity of S. canadensis L., although the degree of effect varied. The strongest suppression was observed with Lintur (0.3 kg/ha), which reduced plant height, stem diameter, and leaf area, limited the number of regenerating shoots, and significantly decreased photosynthetic rate, chlorophyll content, and transpiration intensity. Roundup Max (4.0 L/ha) exhibited an intermediate effect, while Dianat (1.5 L/ha) caused moderate suppression. Phenological development was also delayed, particularly after Lintur application, as evidenced by postponed stem elongation, budding, and flowering. These findings can serve as a basis for developing regulated chemical control schemes for S. canadensis L., improving phytocenosis management, and conserving biodiversity in agricultural landscapes and natural ecosystems
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Copyright (c) 2026 Ганна КОРПІТА, Іван ШУВАР, Галина КОСИЛОВИЧ, Оксана ОВЧІННІКОВА, Володимир АЛЬОХІН (Автор)
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