Evaluation of Some Herbicides to Weed Control in Seedling Alfalfa

Document Type : Research Paper

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Abstract

of Jiroft in a randomized complete blocks design with 3 replications and 8 treatments for two years. Treatments included Imazethapyr %10 SL at 0.5, 0/75 and 1 Lit/ha + Cytogate at 1Lit/ha in 10-15 cm alfalfa, post emergence of weeds + Cycloxydim %10 EC at 2 Lit/ha post emergence of grass weeds, Pendimethalin %33 EC at 2 and 3 Lit/ha (pre- emergence), Chlorthal-dimethyl %75 WP at 6 and 8 kg/ha + Cycloxydim at 2 Lit/ha, weed free check. The results showed that Chlorthal-dimethyl and Pendimethalin controlled Malva parviflora better than Imazethapyr, and Imazethapyr controlled Brassica tourenforti better than Chlorthal-dimethyl and Pendimethalin. All herbicides showed similar efficiency on Chenopodium and Digera muricata control. Imazethapyr was the best herbicide of the experiment and at 0.5 and 0.75 Lit/ha produced the highest alfalfa biomass in the first and second harvests. Chlorthal-dimethyl increased alfalfa biomass at second harvest, but Pendimethalin caused phytotoxocity on alfalfa and reduced its biomass.

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References

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Iranian Journal of Weed Science
Volume 8, Issue 2 - Serial Number 2
November 2012
Pages 13-24

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