单词	velvetleaf
释义	velvetleaf /ˈvɛlvɪtliːf / noun [mass noun] A Eurasian plant of the mallow family, with large heart-shaped velvety leaves and yellow flowers. It is naturalized in North America, where it has become a serious weed of farmland. Abutilon theophrasti, family Malvaceae. If soybeans are exhibiting cupped leaves but velvetleaf in the field appears normal there is a good likelihood that the cupping is an environmental response rather than one caused by a growth regulator herbicide.... Large-seeded weeds like velvetleaf that can emerge from deep in the soil are very resistant to shallow cultivation with weeders. Apply with 2 to 4 quarts per acre of liquid nitrogen fertilizer when velvetleaf is a target weed.
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