The Joint Action of Some Broadleaf Herbicides on Potato (Solanum tuberosum L.) Weeds and Photosynthetic Performance of Potato

Herbicide mixtures are a modern weed management practice as they reduce herbicide application. This study aimes to evaluate the effect of metribuzin, halosulfuron and flumioxazin applied individually (metribuzin:halosulfuron metribuzin:flumioxazin) on Chenopodium album, Amaranthus retroflexus, potatoes biomass chlorophyll-a fluorescence in 21 experiments. The individual experimental design was randomized completely block with seven doses three replications. factorial experiments were performed basis replications for binary mixture Flumioxazin very potent controlling C. A. injured 50% effective dose (ED50) 1.21, 0.54, 12.23 g ai·ha−1, respectively. Both metribuzin:halosulfuron metribuzin:flumioxazin generally showed an antagonistic both weeds potato 12 independent Metribuzin, halosulfuron, significantly decreased photosystem II activity by decreasing maximum quantum efficiency (Fv/Fm). almost followed Additive Dose Model Fv/Fm, whilst there that closely related biomass. results indicated antagonistic, endpoint choice is pivotal when assessing joint action mixtures.