کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9447914 | 1305575 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Growth and phenology of eight common weed species
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The relative growth rate (RGR), resource allocation and phenological behaviour were determined for eight common weed species growing in the field crops of Beni-Suef governorate, Egypt. The RGR decreases with age. The increased RGR together with high dry matter investment into vegetative parts during seedling and juvenile stages, promote the competitive ability required for the weedy species. The investigated species mostly exhibit a decrease in dry matter allocation to roots with age. Most of the studied species invest relatively large proportions of phytomass into the reproductive parts. The phenological pattern of the weedy species seems to be affected by the sowing time of the crop and the crop longevity in addition to differences in light conditions resulting from differences in the cropping systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 61, Issue 2, April 2005, Pages 171-183
Journal: Journal of Arid Environments - Volume 61, Issue 2, April 2005, Pages 171-183
نویسندگان
A.K. Hegazy, G.M. Fahmy, M.I. Ali, N.H. Gomaa,