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Figure

Planting recommendation based on soil temperature and activity of southern rootknot nematode. If grain is planted when soil temperature is above 64°: F (A), the activity threshold of M. incognita, the nematode can invade the roots and complete a generation before harvest. If grain is planted when soil temperature is below 64° F (B), the nematode cannot invade roots until spring, when there is not enough time for completion of a generation.

From: P.A. Roberts, S.D. Van Gundy, and H.E. McKinney, Journal of Nematology, vol. 13, pp. 338-345, 1981.

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