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ارزیابی پدیده ای به نام رشد مجدد یولاف وحشی بعد از کاربرد علفکش در دو توده فارس و کردستان | ||
| آفات و بیماری های گیاهی | ||
| دوره 88، شماره 2 - شماره پیاپی 111، اسفند 1399، صفحه 187-197 اصل مقاله (501.91 K) | ||
| نوع مقاله: علوم علف‌های هرز | ||
| شناسه دیجیتال (DOI): 10.22092/jaep.2020.126574.1286 | ||
| نویسندگان | ||
| احمد زارع* 1؛ حمید رحیمیان مشهدی2؛ مصطفی اویسی3؛ رضا حمیدی4 | ||
| 1دانشگاه علوم کشاورزی و منابع طبیعی خوزستان | ||
| 2هیت علمی دانشگاه تهران | ||
| 3هیات علمی دانشگاه تهران | ||
| 4هیات علمی دانشگاه شیراز | ||
| چکیده | ||
| آزمایشی به‌صورت کرتهای دوبار خردشده به منظور ارزیابی اثر دوزهای مختلف علفکش یدوسولفورون+مزوسولفورون (آتلانتیس) و زمان کاربرد آنها بر دو توده فارس و کردستان یولاف در سال زراعی 1392-1393 در شرایط مزرعه در استان فارس انجام شد. دوزهای مختلف علفکش (0، 6، 12، 18 و 24 گرم ماده مؤثره در هکتار) به‌عنوان کرت اصلی، دو توده یولافوحشی (توده جمعآوری شده از فارس و توده جمعآوری شده از کردستان) به‌عنوان کرت فرعی و زمان کاربرد علف کش مرحله 18 (هشتبرگی) و 23 زادوکس (مرحله پنجهزنی) به‌عنوان کرت فرعی فرعی درنظر گرفته شد. درصد رشد مجدد در دو توده فارس و کردستان در بالاترین دوز (24گرم در هکتار) در دو زمان کاربرد علفکش در هشتبرگی به‌ترتیب 6/16 و 5/ 4 درصد و پنجهزنی 23 و 6 درصد به دست آمد. درصد رشد مجدد یولافوحشی در دوزهای کاهش یافته (12گرم در هکتار) در زمان پنجهزنی نسبت به هشتبرگی در دو توده کردستان و فارس بیشتر بود. معادلات دوز- پاسخ نشان داد که دوز مورد نیاز برای کاهش 50 درصد وزن خشک یولافوحشی در توده کردستان در دو زمان کاربرد هشتبرگی و پنجهزنی معادل 93/7 و 38/8 گرم ماده موثره در هکتار و در توده فارس در دو زمان هشتبرگی و پنجهزنی به ترتیب برابر 89/9 و 66/9 گرم ماده مؤثره در هکتار بود. کاربرد دوزهای کاهش یافته (12 گرم ماده مؤثره در هکتار)، در مرحله 18 زادوکس (هشت برگی) توصیه می‌گردد. | ||
| کلیدواژه‌ها | ||
| دوز-پاسخ؛ دوزهای کاهش یافته؛ عملکرد دانه؛ کارایی علفکش؛ وزن خشک | ||
| عنوان مقاله [English] | ||
| The survey of phenomenon as regrowth of wild oat after application herbicide in two populations Fars and Kurdistan | ||
| نویسندگان [English] | ||
| ahmad zare1؛ hamid rahimian mashhadi2؛ mostafa oveisi3؛ reza hamidi4 | ||
| 1Assistant Professor Agricultural science and Natural Resources University of Khuzestan | ||
| 2university of tehran | ||
| 3university of tehran | ||
| 4university of shiraz | ||
| چکیده [English] | ||
| A To evaluate the different doses of mesosulfuron + iodosulfuron (Atlantis) and application time on two Kurdistan and Fars populations in crop year 2013-2014, a split spilt plot experiment was carried out in the field in Fars province. The different doses of herbicide (0, 6, 12, 18, 24 g ai/ha) as the main plot, two populations of wild oat (Kurdistan and Fars respectively) as sub-plot and application time at stages of 18 (8 leaves) and 23 zadoks (tillering) as sub-sub plot were considered. The regrowth percentage of wild oat Fars and Kurdistan populations in highest dose (24 g ai/ha) at two herbicide application times in 8 leaves (16.16 and 4.5%) and tillernig (23 and 6%) were obtained respectively. It is remarkable that the regrowth percentage of wild oat at reduced dosage (12 g ai/ha) at tillernig time was more than 8 leaves in two Kurdistan and Fars populations. Dose-response equations for dry weight of wild oat showed that the required level of dose for reaching a 50% decrease in two populations of wild oat and application times was different. Doses of 7.93 and 8.38 g ai/ha in order to achieve a 50% decrease in the dry weight of Kurdistan population in two application times of 8 leaves and tillering was required. These amounts for a 50% reduction in dry weight of Fars were 9.89 and 9.66 g ai/ha, respectively. In reduced doses of herbicide with delayed application time, regrowth and dry weight of wild oat increase and effect on grain yield and number of spike in wheat. The application of reduced doses (12 g ai/ha) is recommended at stages of 18 zadoks (8 leaves). | ||
| کلیدواژه‌ها [English] | ||
| Dose-response, reduced dosesDose-response, Dry weight, Herbicide efficiency, Grain yield, Reduced doses | ||
| مراجع | ||
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