. The control of cotton wilt and root-knot. Fig. 3.—Roots of cotton, showing en-largements caused by the to the vride prevalence of thisworm in the southeastern UnitedStates, the aggregate aimual damagewhich it causes on cotton is very large,though not generally appreciated.(After George F. Atkinson.) Fig. 4.—Roots of okra, show-ing the enlargements causedby the gallworm. The nem-atodes producing this dis-ease are to be found in theroot enlargements. (AfterJ. C. Xeal.) Senator, Representative, or Delegate in Congress, or to the Secretaryof Agriculture. HOW TO RECOGNIZE ROOT-KNOT

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. The control of cotton wilt and root-knot. Fig. 3.—Roots of cotton, showing en-largements caused by the to the vride prevalence of thisworm in the southeastern UnitedStates, the aggregate aimual damagewhich it causes on cotton is very large,though not generally appreciated.(After George F. Atkinson.) Fig. 4.—Roots of okra, show-ing the enlargements causedby the gallworm. The nem-atodes producing this dis-ease are to be found in theroot enlargements. (AfterJ. C. Xeal.) Senator, Representative, or Delegate in Congress, or to the Secretaryof Agriculture. HOW TO RECOGNIZE ROOT-KNOT. Where root-knot occurs with wilt the mjury from the latter isgieatly increased. Root-knot itself does not show on the above-ground parts of the plant except through its indirect injury, and henceis frequently overlooked. It is desirable that the farmer know with certainty whether thereis root-knot in his land. As a test, okra, tomatoes, or cantaloupesmay be planted and the roots dug up after midsummer and examinedfor swellings or gal

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