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Herbicidal Efficacy of atrazine for Weed Control in Maize (Zea mays L.)

How to cite

Khogali I Idris ,Dafalla A Dawoud ,Hassan A Mubark ,2015, Herbicidal Efficacy of atrazine for Weed Control in Maize (Zea mays L.) ,Journal of Science and Technology,16 (2) ,pp:-

By Khogali I Idris ,Dafalla A Dawoud ,Hassan A Mubark ,
Weeds, atrazine, Maize, Yield
A field trial was conducted at Gezira Research Station Farm, duringseasons 2010/2011 and 2011/2012, to evaluate activity and selectivity of the pre-emergence herbicide atrazine (Oxatryne 500SC) for weed control in maize. The herbicide was tested at 0.357, 0.476, 0.595 and 0.714 kg a.i ha-1. The most prevailing weed species were False amaranth {(Digera muricata (L.) Mart}., Blue morning glory (Ipomoea spp.), Cattail grass (Seteria pallidefusca)and Ocimum basilicum . The herbicide displayed very good to excellent control of broadleaved weeds (73- 98%) . However, its activity against grassy weeds was poor to moderate (4- 56% control). All herbicide treatments were highly selective to the crop.Yield reductions as a result of unrestricted weed growth were 81 and 74 %, in the first and second seasons, respectively. In both seasons, the herbicide at all rates tested, irrespective of supplementary hand weeding increased maize yield significantly compared to the untreated control
ﻡ ﺒﻬﺩﻑ ﺘﻘﻭﻴﻡ ﻓﻌﺎﻝﻴﺔ ﻤﺒﻴﺩ 2012/2011 ﻭ 2011/2010 ﺃﺠﺭﻴﺕ ﻫﺫﻩ ﺍﻝﺘﺠﺭﺒﺔ ﺒﻤﺤﻁﺔ ﺒﺤﻭﺙ ﺍﻝﺠﺯﻴﺭﺓ ﺨﻼ ﻤﻭﺴﻤﻲ 0.595 0.476 0.357 ﺍﻻﺘﺭﺍﺯﻴﻥ ﻝﻤﻜﺎﻓﺤﺔ ﺍﻝﺤﺸﺎﺌﺵ ﻓﻲ ﻤﺤﺼﻭ ﺍﻝﺫﺭﺓ ﺍﻝﺸﺎﻤﻴﺔ. ﺃﺴﺘﺨﺩﻡ ﺍﻝﻤﺒﻴﺩ ﺒﺎﺭﺒﻌﺔ ﺘﺭﺍﻜﻴﺯ ﻫﻲ ﻜﻴﻠﻭﺠﺭﺍﻡ ﻤﺎﺩﺓ ﻓﻌﺎﻝﺔ ﻝﻠﻬﻜﺘﺎﺭ. ﻭﺘﻤﺕ ﺇﻀﺎﻓﺔ ﺍﻝﻤﺒﻴﺩ ﻗﺒ ﺍﻻﻨﺒﺜﺎﻕ. ﺃﻫﻡ ﺍﻝﺤﺸﺎﺌﺵ ﺍﻝﺴﺎﺌﺩﺓ ﻓﻲ ﻫﺫﺓ ﺍﻝﺘﺠﺭﺒﺔ ﻫﻲ ﻝﺒﻼﺏ 0.714ﻭ ﺍﺤﻤﺭ ﺘﺒﺭ ﻝﺼﻴﻕ ﻭﺭﻴﺤﺎﻥ. ﺃﺘﻀﺢ ﻤﻥ ﺍﻝﺩﺭﺍﺴﺔ ﺍﻥ ﻤﻌﺎﻤﻼﺕ ﺍﻝﻤﺒﻴﺩ ﺫﺍﺕ ﻓﻌﺎﻝﻴﺔ ﻋﺎﻝﻴﺔ ﻓﻲ ﻤﻜﺎﻓﺤﺔ ﺍﻝﺤﺸﺎﺌﺵ ﻋﺭﻴﻀﺔ ﻤﻜﺎﻓﺤﺔ ﻀﻌﻴﻔﺔ ﺍﻝﻲ ﻤﺘﻭﺴﻁﺔ ﻝﻠﺤﺸﺎﺌﺵ ﺫﺍﺕ ﺍﻻﻭﺭﺍﻕ ﺍﻝﺭﻓﻴﻌﺔ ) 98-73ﺍﻷﻭﺭﺍﻕ ) -4 %(. ﺒﻴﻨﻤﺎ ﺍﻋﻁﻲ ﻨﻔﺱ ﺍﻝﻤﻌﺎﻤﻼﺕ %(. ﺃﻅﻬﺭﺕ ﺍﻝﻨﺘﺎﺌﺞ ﺃﻥ ﺠﻤﻴﻊ ﻤﻌﺎﻤﻼﺕ ﺍﻝﻤﺒﻴﺩ ﺫﺍﺕ ﺍﺨﺘﻴﺎﺭﻴﺔ ﻋﺎﻝﻴﺔ ﻝﻠﻤﺤﺼﻭ. ﺃﺘﻀﺢ ﻤﻥ ﺍﻝﺩﺭﺍﺴﺔ ﺃﻥ ﺍﻝﻀﺭﺭ ﺍﻝﺫﻱ ﺘﺴﺒﺒﻪ 56 % ﻓﻲ ﺍﻝﻤﻭﺴﻤﻴﻥ ﻋﻠﻲ ﺍﻝﺘﻭﺍﻝﻲ. ﻓﻲ ﺍﻝﻤﻭﺴﻤﻴﻥ ﻤﻌﻅﻡ 74 ﺍﻝﺤﺸﺎﺌﺵ ﻓﻲ ﺍﻹﻨﺘﺎﺠﻴﺔ ﻝﻤﺤﺼﻭ ﺍﻝﺫﺭﺓ ﺍﻝﺸﺎﻤﻴﺔ ﻗﺩ ﺒﻠﻎ 18 ﻭ ﻤﻌﺎﻤﻼﺕ ﺍﻝﻤﺒﻴﺩ ﺃﺩﺕ ﺍﻝﻲ ﺯﻴﺎﺩﺓ ﻤﻌﻨﻭﻴﺔ ﻓﻲ ﺇﻨﺘﺎﺠﻴﺔ ﺍﻝﺫﺭﺓ ﺍﻝﺸﺎﻤﻴﺔ ﺒﻐﺽ ﺍﻝﻨﻅﺭ ﻋﻥ ﻋﺩﻡ ﻭﺠﻭﺩ ﺍﻝﻌﺯﻴﻕ ﺍﻝﻴﺩﻭﻱ ﺍﻝﻤﺼﺎﺤﺏ ﻝﻠﻤﻌﺎﻤﻼﺕ ﻭﺫﻝﻙ ﻤﻘﺎﺭﻨﺔ ﺒﺎﻝﺸﺎﻫﺩ ﻏﻴﺭ ﺍﻝﻤﻌﺸﺏ.
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