. Circular. Agriculture; Agriculture -- United States. Fig. 2-—Cross sec- tions of cotton stem. showing browning of wood caused hy the wilt fungus. (Natural size.) Fig. 3.—Roots of cotton, showing en- largements caused liy the galhvorm. Owing to the wide prevalence of this worm in the southeastern I'nited States, the aggregate annual damage which it causes on cotton is very large, though not generally appreciated. (After George F. Atkinson.) Fig. 4.—Roots of okra, show- ing the enlargements caused by the galhvorm. The nem- atodes producing tliis dis- ease are to be found in the root enlargemen
. Circular. Agriculture; Agriculture -- United States. Fig. 2-—Cross sec- tions of cotton stem. showing browning of wood caused hy the wilt fungus. (Natural size.) Fig. 3.—Roots of cotton, showing en- largements caused liy the galhvorm. Owing to the wide prevalence of this worm in the southeastern I'nited States, the aggregate annual damage which it causes on cotton is very large, though not generally appreciated. (After George F. Atkinson.) Fig. 4.—Roots of okra, show- ing the enlargements caused by the galhvorm. The nem- atodes producing tliis dis- ease are to be found in the root enlargements. (After J. C. Neal.) Senator, Representative, or Delegate in Congress, or to the Secretary of Agriculture. HOW TO RECOGNIZE ROOT-KNOT. Wliere root-knot occurs* with wilt the injury from the latter is (Teatly increased. Root-knot itself does not show on the above- ground parts of the plant except through its mdu'ect injury, and hence is frequently overlooked. It is desirable that the farmer know with certainty whether there is root-knot in his land. As a test, okra, tomatoes, or cantaloupes may be planted and the roots dug up after midsummer and examined for swellings or galls. If these are found, a rotation of plants immune to root-knot should be started to get rid of the pest. (See p. 7.) [Cir. ftU]. 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 United States. Bureau of Plant Industry. Washington, D. C. : U. S. Dept. of Agriculture, Bureau of Plant Industry
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Keywords: ., bookcentury1900, bookdecade1900, booksubj, booksubjectagriculture
