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Nematode/Pest Workshop: What Is an Interaction?

N. R. Walker and C. S. Rothrock


 
ABSTRACT

An interaction is an association between two or more pests which results in greater plant damage than if either pest occurred alone. For cotton, the most common interactions occur between; nematodes (root-knot, reniform, and lance) and seedling disease fungi (Thielaviopsis basicola, Fusarium spp., Rhizoctonia solani and Pythium spp.) or seedling disease fungi or nematodes and insects (thrips or white flies). Disease interactions can be additive, meaning the sum of disease severity is equal to the severity of disease caused by either pest alone or synergistic, meaning the severity of damage is greater than the sum of damage caused by either pest.



Reprinted from Proceedings of the 1999 Beltwide Cotton Conferences pp. 124 - 125
©National Cotton Council, Memphis TN

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Document last modified Monday, Jun 21 1999