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

Elham Samadi Kalkhoran, Mohammad Taghi Alebrahim, Hamid Reza Mohammaddust Chamn Abad, Jens Carl Streibig, Akbar Ghavidel and Te-Ming Paul Tseng
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Elham Samadi Kalkhoran: Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Mohammad Taghi Alebrahim: Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Hamid Reza Mohammaddust Chamn Abad: Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Jens Carl Streibig: Department of Plant and Environmental Science, Faculty of Life Sciences, University of Copenhagen, DK-2360 Copenhagen, Denmark
Akbar Ghavidel: Department of Soil Science and Engineering, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Te-Ming Paul Tseng: Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762, USA

Agriculture, 2021, vol. 11, issue 11, 1-17

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

Keywords: antagonism; binary mixture; isobole model; maximum fluorescence (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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