| 单词 | grey speck disease |
| 释义 | > as lemmasgrey speck disease grey speck n. (more fully grey speck disease) a disease of oats characterized by grey specks on the leaf-blades, caused by a deficiency of manganese. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > deficiency diseases > associated with crop or food plants greenback1926 grey leaf1928 marsh spot1931 tea yellows1931 speckled yellows1938 grey speck1947 1919 U.S. Dept. Agric. Bull. 756 413 Samuel and Piper found that a deficiency [of manganese] produced a gray-speck disease of oats. 1947 Sci. News 5 88 Manganese is essential for healthy plant life. Its deficiency in soil..leads to plant diseases such as grey speck of oats. 2011 Irish Independent (Nexis) 12 Apr. Mn deficiency is often described as ‘grey speck’ in oats. < as lemmas |
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