1عضو هیات علمی سازمان تحقیقات، آموزش و ترویج کشاورزی،مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی، گرگان
2عضو هیات علمی سازمان تحقیقات، آموزش و ترویج کشاورزی،موسسه تحقیقات پنبه کشور، گرگان
چکیده
بهمنظور انتخاب مناسبترینحشرهکش علیه سنک قوزه پنبه (Creontiades pallidus) تحقیقی در قالب طرح بلوکهای کامل تصادفی با 6 تیمار و 3 تکرار در مزرعه پنبه، در سالهای1382 و 1383 در استان گلستان اجرا گردید. ابعاد هر کرت آزمایش 2/7×8 مترمربع(9 ردیف 80 سانتیمتری) بوده و در هر نمونهبرداری 10 بوته تصادفی انتخاب و به روش تکان دادن بوته در تور حشره گیری نمونهبرداری انجام گردید. در زمان اوج فعالیت سن در مزارع پنبه، آزمایش انجام ویک روزقبل و 2، 5، 7 ، 10 و14روز بعد از سمپاشی تعداد آفت شمارش و یادداشت شد. در تجزیه مرکب دوساله آزمایش، علیرغم اینکه اثر متقابل مکان× تیمار معنیدار شده امّا تیمارهای مورد آزمایش، ازنظر مکانی هیچگونه اختلاف معنیداری نداشتند. ازنظر سال آزمایش نیزتیمارها، فقط در نمونهبرداریهای روز پنجم و هفتم دارای اختلاف معنیداری بودند. میانگین دوسالانه درصد کاهش جمیعت آفت نشان داد که در ایستگاه تحقیقات کشاورزی گنبد، دانیتول با 69/67 درصد، در ایستگاه تحقیقات پنبه هاشمآبادآفتکش چس با 92/75 درصد دارای بیشترین درصد تأثیر بودند. نتایج مقایسه میانگین مرکب آزمایش نشانگر آن است که چس با 60/67 درصد، دانیتول با 21/63 درصد، متاسیستوکس با 51/57 درصد، آدمیرال با 13/54 درصد وکنفیدر با 51/34 درصد تأثیر در ردههای اوّل تا پنجم قرار داشتند.
The effect of some insecticides on Creontiades pallidus in cotton fields of Gorgan and Gonbad-e Qabus
نویسندگان [English]
Suleyman Khormali1؛ Taghi Darvish Mojeni2
1Scientific Member of Agricultural Research, Education and Extension Organization (AREEO), Agricultural and Natural Resourses Research Center of Mazandaran, Gorgan, Iran
2Scientific Member of Agricultural Biotechnology, Associate Professor, Agricultural Research, Education and Extension Organization (AREEO), Cotton Research Institute of Iran, Gorgan, Iran
چکیده [English]
In order to choose the most suitable pesticide against,Creontidades pallidus, an experiment was carried out in a Randomized Complete Block Design with three replications and six treatments inGolestan province in 2003 and 2004. Plot size was 8 by 7.2 meter (nine 80 meter long rows spaced 80 centimeters apart). At each sampling, 10 randomly-selected plants were shaken into the net.. At the peak of bug activity in cotton fields, the experiment was done, and one day before and 2,5,7,10 and 14 days after pesticides aplication, number of pests were counted.In two-year combined analysis, although,the effect of location by treatment interaction was significant for the traits, there were not any significant differences between locations. There was not any significant difference between pesticide for pest reduction rate at 2nd and 5th day after pesticides application, but treatment means for raw data was singinificantly different from the check.Based on two-year results, Danitol and Chess at Agricultural Research Station of Gonbad and Cotton Research Station of Hashem –Abad, respectivly had the highest effect on pest reduction(67.69 and 75.92 percent reduction, respectively). According to the conbined analysis of the data, Chess, Danitol, Metasystox, Admiral, Confidor were ranked first to five with 67.60, 63.21, 57.51, 54.13 and 34.51 percent reduction, respectively.
کلیدواژهها [English]
Insecticide, Chess, Creontiades pallidus, Pest population
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