1. Sampling nematode populations;Barker,1981
2. Effects of Meloidogyne incognita on cotton and cowpeas in rotation;Duncan,1983
3. Nematode economic thresholds: derivation, requirements, and theoretical considerations;Ferris;J. Nematol.,1978
4. Dynamic action thresholds for diseases induced by nematodes;Ferris;Annu. Rev. Phytopathol.,1981
5. Approaches to the assessment of crop losses due to nematodes;Ferris,1982