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اثر تاریخ کاشت بر عملکرد غده و شدت بیماری لکه موجی در شش رقم سیب‌زمینی در فریدن اصفهان | ||
| به زراعی نهال و بذر | ||
| مقاله 4، دوره 32، شماره 2، آذر 1395، صفحه 173-191 اصل مقاله (237.56 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/sppj.2016.113077 | ||
| نویسنده | ||
| مهدی نصر اصفهانی | ||
| بخش تحقیقات گیاهپزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان، ایران | ||
| چکیده | ||
| در این تحقیق، اثر سه تاریخ کاشت با فواصل دو هفته‌ای (اول، نیمه و آخر خرداد ماه) بر عملکرد و شدت بیماری لکه موجی در شش رقم سیب‌زمینی در منطقه فریدن اصفهان در سال‌های 1390 و 91 بررسی شد. نتایج نشان داد که تاریخ کاشت، اثر معنی‌داری بر عملکرد و شدت بیماری لکه‌موجی داشت. بیش‌ترین مقدار عملکرد غده در تاریخ کاشت اول خرداد با میانگین 30 تن در هکتار و پس از آن تاریخ کاشت‌های نیمه و آخر خرداد با مقادیر62/23 و 57/20 تن در هکتار به دست آمد. در تاریخ کاشت اول خرداد دو رقم مارفونا و آگریا، بیش‌ترین عملکرد غده (به ترتیب 80/31 و 71/31 تن در هکتار) و دو رقم دیامانت و کوزیما کمترین عملکر غده (به ترتیب 88/25 و 45/27 تن در هکتار) را داشتند. بیش‌ترین میانگین شدت بیماری در تاریخ کاشت اول خرداد و در مرحله حجیم شدن غدهها با شدت 76/2 در صد و سپس دو تاریخ کاشت نیمه و آخر خرداد به ترتیب با شدت 27/2 و 05/2 درصد محاسبه شد. ارقام سیب‌زمینی نیز شدت‌های متفاوتی از بیماری لکه‌موجی را داشتند. ارقام سانته و آگریا با شدت 48/2 و 42/2 درصد بیش‌ترین و ارقام دیامونت و مارادونا با 08/2 و 09/2 درصد کمترین شدت بیماری را داشتند. ارقام مارفونا و کوزیما با 34/2 و 35/2 درصد بیماری، در حد واسط این دو طیف قرار گرفتند. | ||
| کلیدواژه‌ها | ||
| سیب‌زمینی؛ ارقام؛ عملکرد؛ تاریخ کاشت؛ مراحل رشد و بیماری لکه‌موجی | ||
| عنوان مقاله [English] | ||
| Effect of Planting Date on Tuber Yield and Early Blight Disease Severity in Six Potato Cultivars in Faridan, Isfahan | ||
| نویسندگان [English] | ||
| M. Nasr Esfahani | ||
| Department of Plant Protection, Isfahan Agricultural and Natural Resources Research and Education Center, ARREO, Isfahan, Iran. | ||
| چکیده [English] | ||
| The effects of three planting dates with 15 days intervals, on the tuber yield and early blight disease severity in six potato cultivars were studied in Freidan, Isfahan province, Iran, for the two years 2011-2012. The results indicated that, the planting date had significant effects on yield and disease severity of potato. Maximum tuber yield was obtained in the first of June planting date, followed by the mid and end June planting dates (30.00, 23.62 and 20.07 tha-1, respectively. The cultivars Maradona and Agria with 31.80 and 31.71 tha-1 had the highest yield followed by Sonate and Marfona with 31.57 and Cosima and Diamante with 27.47 and 25.88 tha-1, respectively. In respect to the early blight, maximum disease severity was observed in the first planting date after flowering stage (2.76%), followed by the mid and late planting dates (2.27% and 2.05%), respectively). Potato cultivars had different disease severities. Cultivars Sante and Agria with 2.48 and 2.42%, had the highest, Diamond and Maradona with 2.08 and 2.09% the lowest and Marfona and Cosima with 2.34 and 2.35% had the intermediate disease severities, respeclively. | ||
| کلیدواژه‌ها [English] | ||
| Potato, Cultivars, yield, Planting date, Growth stage, early blight | ||
| مراجع | ||
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