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Research Article Open Access
Highly dependence of today’s agriculture to chemical herbicide causes different environmental effects and scientists search for finding alternative methods for weed management. This experiment was conducted in order to use of allelopathy extract of sorghum, sunflower, sugar beet and safflower for weed management in wheatat Fars province, Iran. The experiment consisted of aqueous extract of mentioned plants with reduced dose of Granstar, Illoxan and 2,4-D herbicides (half of recommended dose) which applied post emergence in Completely Randomized Blocks Design. The results showed that use of aqueous extract solely reduced number and dry weight of weeds and increased wheat yield and yield components. Application of 10 L/ha aqueous extract solely causes 17.8% increase in wheat yield in comparison to weedy control. Use of aqueous with reduced dose of herbicides caused a good control of weed and increasing wheat yield. Overall the results showed that 10 L/ha of allelopathic plants extracts
with reduced dose of wheat herbicides can be recommended for good weed control and reducing herbicide application in wheat.
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Author(s): Hamid Reza Miri and Mohammad Armin
weed management, aqueous extract, allelopathy, yield and yield components