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首页> 外文期刊>Outlook on Agriculture >Incidence and severity of Striga spp. in the coastal savanna zone of Ghana Results and implications of a formal survey
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Incidence and severity of Striga spp. in the coastal savanna zone of Ghana Results and implications of a formal survey

机译：Striga spp。的发生率和严重性。加纳沿海热带稀树草原地区的结果和正式调查的意义

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A survey was conducted in the coastal savanna zone of Ghana to determine the incidence and severity of Striga. The aim was to use the results to sensitize stakeholders in agricultural research and development to the current status of the problem so as to help them address it. Of the respondents to the survey, 67.1% had seen Striga before, whilst 32.9% had not. Of the farmers who had seen Striga before, 2.5% indicated that they had known or seen Striga as far back as 1966. However, between 1970 and 1989, 21% of the farmers had seen Striga, whilst between 1989 and the time of the survey in 2001, 40.7% had seen Striga, indicating that its incidence had increased with time. Maize is the single most important crop attacked by Striga in the area: 65.8% of the respondents recognized it in maize, with 5.3% each for cowpeas and millet. Infestation in crops such as sorghum, bambarra groundnut, soybean and rice were indicated by about 3% of the respondents for each crop. Twelve respondents, representing 14.8% of the sample, said they knew of crop varieties that were not attacked by Striga. Of these 12, one (8.3%) mentioned sugar cane, one pepper and one cowpea;four (33.3%) said cassava; two (16.6%) mentioned okra, and the same percentage mentioned aubergines. About 18.5% of the respondents said they had seen Striga attack other weeds as well as crops. Of these, 66.7% specified grass, 20% speargrass, and Andropogon, Cyperus and Sporobulus each received 6.7% of mentions. Of those farmers who had Striga in their fields, 82.4% adopted one of two forms of control. Of the farmers who controlled Striga, 53% did it through mechanical weeding and 47% through hand pulling.
机译：在加纳的沿海热带稀树草原地区进行了一项调查，以确定斯特里加的发病率和严重程度。目的是利用结果使农业研究和开发的利益相关者对问题的现状敏感，从而帮助他们解决这一问题。在接受调查的受访者中，有67.1％的人以前没有看过Striga，而32.9％的人没有看过。在曾经看过Striga的农民中，有2.5％的人表示他们早在1966年就认识或看过Striga。但是，在1970年至1989年之间，有21％的农民看过Striga，而在1989年至调查期间在2001年，有40.7％的人看过Striga，表明其发病率随着时间的推移而增加。玉米是该地区受Striga袭击的最重要的作物：65.8％的受访者在玉米中认识到它，其中cow豆和粟分别为5.3％。每种作物约有3％的受访者表示高粱，班巴拉花生，大豆和大米等作物受到侵害。十二名受访者（占样本的14.8％）说，他们知道未被Striga袭击的作物品种。在这12个中，有1个（8.3％）表示甘蔗，1个胡椒和1个cow豆; 4个（33.3％）表示木薯;其中有两个（16.6％）的人提到秋葵，而提到茄子的人则相同。大约18.5％的受访者表示，他们已经看到Striga侵害其他杂草和农作物。其中66.7％的指定草，20％的长矛草和Andropogon，Cyperus和Sporobulus分别收到6.7％的提及。在田间有Striga的农民中，82.4％采取了两种控制方式之一。在控制Striga的农民中，有53％是通过机械除草的，而47％是通过手拉草的。

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