کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4505617 1624308 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Herbicide and winter flood treatments for controlling volunteer rice off-season
ترجمه فارسی عنوان
درمان های سمی علف کش و زمستان برای کنترل فصل آزاد شدن برنج داوطلب
کلمات کلیدی
دورمنس، ظرفیت جوانه زنی، برنج ترکیبی عمق دفن بذر، زمستان زمستان، حیاتی، برنج داوطلب، زمستان سیل
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی


• Winter-flooding reduced volunteer rice infestation.
• Winter-flooding hastened herbicide dissipation.
• The best control was with Pyroxasulfone (fall) followed by 2,4-D 35 d preplant.
• Hybrid rice seed overwinters more than conventional rice seed.
• More volunteer rice is expected following hybrid rice than conventional rice.

Field experiments were conducted to study the efficacy of 12 herbicide treatments for volunteer rice control with, or without, winter-flooding in Stuttgart and Rohwer, Arkansas, USA over two years (2012–13 and 2013–14). Herbicides were applied either in the fall or at 35 d prior to planting rice in the spring. Commercially harvested Clearfield™ long-grain inbred rice 'CL152' was used as volunteer rice seed, broadcasted and lightly incorporated in October, 2012 and 2013. 'Jupiter' (medium-grain inbred, conventional rice) was planted in May as the rice crop. Winter-flood was initiated soon after the fall herbicide treatments were applied and terminated in February. Winter-flood reduced volunteer rice germination by 34% in 2013 and by 40% in 2014. Some fall herbicide treatments, without winter flood, generally caused more injury to the rice crop planted in the spring than the winter-flooded treatments. Fall application of pyroxasulfone (0.12 kg ha−1), flumioxazin (0.14 kg ha−1), and sulfentrazone (0.34 kg ha−1) as well as pre-plant application of pyroxasulfone (0.12 kg ha−1) and 2,4-D (2.24 kg ha−1), resulted in lower volunteer rice infestation, averaged over flood treatments. Pre-plant application of 2,4-D (2.24 kg ha−1), sulfentrazone in the fall (0.34 kg ha−1) and pyroxasulfone pre-plant (0.12 kg ha−1) injured the rice crop by 20%, 23%, and 47%, respectively. Fall application of pyroxasulfone (0.12 kg ha−1) followed by a lower rate of 2,4-D (1.12 kg ha−1) 35 d pre-plant caused minimal (6%) crop injury and did not reduce yield. This treatment provided better volunteer rice control (73%) than pyroxasulfone alone at 0.12 kg ha−1 applied in the fall (64%). To evaluate the overwintering potential of hybrid and non-hybrid volunteer seeds, these seed types were planted at three depths (0, 7.5, 15 cm) in flooded and non-flooded conditions in a buried-pot experiment at Stuttgart and Rohwer over 2 years. Winter-flood reduced rice germination by 50% in 2013–14 and 40% in 2014–15 (averaged over seed type and burial depth), after 160 d and 130 d of burial, respectively. After the winter, the viability of hybrid seed (germinable + dormant) was higher (13 and 53%) than that of non-hybrid seed (8 and 27%) in both years.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Crop Protection - Volume 79, January 2016, Pages 87–96
نویسندگان
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