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首页> 外文期刊>Journal of Science and Technology of Agriculture and Natural Resources >Evaluation of Conventional Management of Fallow-Forage Barley and Sugar Beet-Forage Barley Rotations and its Effect on Density and Distribution of Different Species of Weeds
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Evaluation of Conventional Management of Fallow-Forage Barley and Sugar Beet-Forage Barley Rotations and its Effect on Density and Distribution of Different Species of Weeds

机译：休闲饲用大麦和甜菜饲用大麦的常规管理评价及其对不同杂草种类密度和分布的影响

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This study was performed in two barley fields, in Experimental Station, Agricultural College of Ferdowsi University of Mashhad in 2003. Sampling was done by systematic method in which samples were taken from the corners of 7m*7m grids using 0.5m 0.5m size quadrates in three stages (pre herbicide, post herbicide and pre harvesting stages). The results indicted that the density of annual weed seedlings in sugar beet- barley rotation was more than fallow- barley rotation, and the density of perennial weed seedlings in fallow-barley rotation was more than sugar beet- barley rotation. Map of species distribution and density confirmed patchiness distribution of the weeds. The shape and size of patches differed based on the field and weed species, but spatial distribution did not change considerably before and after the application of herbicide. Percentage of free weeds area was 11.5% and 1.5% in fallow-barley rotation and 0.6% and 0% in sugar beet- barley rotation in the first and second sampling stages, respectively. These results indicate beside emphasis on weed infestation. The result also indicates inefficacy of sugarbeet-barley rotation compared to follow-barley rotation. Apparently, the evaluation of management and paying special attention to weed dispersal within the field assist in the implementation of appropriate management strategy, which includes high efficacy, and profit for farmers as well as least damage to crops. Keywords: Weed, Patchiness distribution, Kriging, Site specific management, Forage barley. Full-Text Type of Study: Research | Subject: Ggeneral Received: 2008/01/9 Related Websites Scientific Publications Commission - Health Ministry Scientific Publications Commission - Science Ministry Yektaweb Company Site Keywords ?????, Academic Journal, Scientific Article, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ?? Vote ? 2015 All Rights Reserved | JWSS - Isfahan University of Technology
机译：这项研究于2003年在马什哈德大学农学院的两个大麦田中进行。采用系统方法进行采样，其中使用0.5m 0.5m大小的正方形从7m * 7m网格的角处采样。三个阶段（除草剂前，除草剂后和收获前阶段）。结果表明，甜菜大麦轮作中一年生杂草的密度大于休闲大麦轮作，而休闲大麦轮作中多年生杂草幼苗的密度大于甜菜大麦轮作。物种分布和密度图确认了杂草的斑块分布。斑块的形状和大小因田地和杂草种类而异，但是在施用除草剂前后，空间分布没有明显变化。在第一和第二个采样阶段，休闲大麦轮作的自由杂草面积百分比分别为11.5％和1.5％，甜菜大麦轮换的自由杂草面积百分比分别为0.6％和0％。这些结果表明除强调杂草侵染外。该结果还表明与跟随大麦旋转相比，甜菜-大麦旋转无效。显然，对管理进行评估并特别注意田间杂草的扩散有助于实施适当的管理策略，该策略包括高效，对农民有利以及对农作物的危害最小。关键字：杂草，斑块分布，克里格，特定地点管理，饲料大麦。全文研究类型：研究|主题：一般收稿日期：2008/01/9相关网站科学出版物委员会-卫生部科学出版物委员会-科学部Yektaweb公司网站关键字??????，Academic Journal，Scientific Article，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ??投票吗？ 2015版权所有| JWSS-伊斯法罕工业大学

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