STRANGULATION OF COTTON ROOTS

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Abstract
Root strangulation of cotton has been found in Texas, Arkansas and Mississippl. It seems to occur only in flat, poorly-drained, heavy clay soils, which are compacted by continuous rain or irrigation and then further hardened, in the absence of cultivation, by continued hot, dry weather. The direct cause of the trouble is apparently that the upper portions of tap roots and laterals of the young seedlings are caught early in the season in a subsurface layer of hard, dry clay in which further development is prevented. Affected plants die when the constricted areas in the hot, dry soil are killed, or when the moisture supply which can be transported through the constricted areas becomes inadequate for the requirements of the plants.

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