. Botany for agricultural students . Botany. CORN SMUT 395 ^^-4^ The Smut of Oats, Stinking Smut of Wheat, and Covered Smut of Barley are very similar in habit and require similar treatment. Sometimes, as in case of the Stinking Smut of Wheat, the infec- tion of the seedling may be due to spores lodged in the soil as well as to spores adhering to the kernel. Loose Smuts of Wheat and Barley. — The Loose Smuts of Wheat and Barley mature and shed their chlamydospores when the grain is in flower. These spores are borne away by the wind and when falling on the flowers of their respective hosts, gro
. Botany for agricultural students . Botany. CORN SMUT 395 ^^-4^ The Smut of Oats, Stinking Smut of Wheat, and Covered Smut of Barley are very similar in habit and require similar treatment. Sometimes, as in case of the Stinking Smut of Wheat, the infec- tion of the seedling may be due to spores lodged in the soil as well as to spores adhering to the kernel. Loose Smuts of Wheat and Barley. — The Loose Smuts of Wheat and Barley mature and shed their chlamydospores when the grain is in flower. These spores are borne away by the wind and when falling on the flowers of their respective hosts, grow hyphae into the young kernel. The kernel continues its development, but when mature it has con- cealed within a tiny Smut plant, which is able, when the kernel is planted, to resume its growth and develop in the grain plant. Much of the damage from these Smuts can be avoided by seed selec- tion. Treatments for these Smuts must aim at killing the tiny Smut plants con- cealed in the seed grain. Soaking the seed in cold water five hours and then in water 130° F. for ten minutes is recommended. Corn Smut. — Corn Smut is the most conspicuous of the Smut group. It attacks all tender regions of the Corn plant but does most damage to the flowers which become much enlarged and transformed into Smut balls. Tumor-like developments of the Fungus occur also on the leaves and stem as well as on the ear and tassel. In Figure 352 is shown an ear in which the kernels are replaced by the tumor- like masses of the Fungus. These Smut bodies have a thin, grayish, hyphal covering, and within the chlamydospores are pro-. FiG. 352. — Ear of Corn with kernels destroyed and replaced by masses of Smut. From Farmers' Bvlletin 507, U. S. Dept. of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Martin, John N. (Joh
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
