|Contribution||Discovered that grains of smutty wheat consisted of masses of worms.|
|Notes||John Turbevill Needham (1713-1781). He did not call the worms nematodes. Parris considers this the first observation that nematodes cause disease in plants. Gerald Thorne, in his 1961 book, gives a quotation from Needham. Organism was later named Anguina tritici.|
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