Sequential Post-Emergence Herbicide Applications in Control of Yellow Nutsedge (Cyperus esculenthus L.) in Bermudagrass Turf

Document Type : Research Paper

Authors

1 Department of agronomy, Faculty of agriculture, Shoshtar branch, Islamic azad university Shoushtar, Iran,

2 Azad University

Abstract

To evaluate the efficacy of some herbicides in the control of yellow nutsedge (Cyperus esculenthus L.) in Bermudagrass, an experiment was conducted in green zone of Ahwaz in 2014. Experiment was conducted in a randomized complete block design with 6 treatments and 4 replications. The treatments consisted of application of metsulfuron-methyl+sulfusulfuron (Total), oxadiazon (Ronstar), clethodim (Select Super), cycloxydim (Focus), nicosulfuron+rimsulfuron (Ultima) and untreated check. Herbicides were applied at the beginning of weed emergence and repeated two more times with one month intervals. The results showed that weed treatments had significant effects on the density and dry weight of yellow nutsedge. Ronstar, Focus, and Select Super, with the mean of 95.4%, 93.42% and 90.9% weed control compared to control treatment, respectively, were the best treatments. Application of Total, Ultima and Ronstar herbicides caused 22.23%, 19.56% and 13.58% damage to yellow nutsedge, respectively. Other herbicides had less adverse effects on Bermudagrass. Total and Focus were the most suitable herbicides because of its proper control on yellow nutsedge and its low level of adverse effects on African grass (Bermudagrass) than other herbicides and therefore, it is recommended.

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References

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Iranian Journal of Weed Science
Volume 14, Issue 2
December 2018
Pages 1-8

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