Abstract
Aim of the research was to determine whether the band application of herbicides in soybean, covering a 50% smaller herbicide area, in combination with inter-row cultivation can achieve a similar or approximate weed control effectiveness, as compared to the broadcast herbicide application method in soybean crops, with and without inter-row cultivation. In three-year trials, pre-emergence (dimethenamid-P + metribuzin) and post-emergence (bentazon + imazamox) herbicides were applied using the broadcast and band (25 cm wide) application of herbicides, with and without inter-row cultivation.Inter-row cultivation was applied one week after the first and second post-emergence treatments. Impact of the tested variants on the fresh aboveground biomass of weeds was assessed, with the following species being dominant: Abutilon theophrasti Medik., Amaranthus retroflexus L., Ambrosia artemisiifolia L., Chenopodium album L., and Xanthium strumarium L. The results showed that using the band application of herbicides with inter-row cultivation can achieve approximate effectiveness in reducing fresh biomass compared to broadcast application of herbicides, with or without inter-row cultivation. The combination of pre-emergence herbicides and the two-time application of divided amounts of post-emergence band and broadcast application of herbicides with inter-row cultivation achieved the most reliable control of all weeds, with an efficiency >95%. The results indicate that under favorable conditions for the herbicide action, it is possible to omit one half of the total amount of applied post-emergence herbicides. This can further contribute to significantly reducing the total amount of herbicides used in weed control.
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