ROOT KNOT NEMATODE INFESTATION 67 



Tagetes minuta. 



Collins 1937 (41) ' No signs of nematode attack. Rhodesia. 

 Tagetes patula, French marigold. (N) 



Buhree, E. M. (Division of Nematology, Bureau of Plant Industry. 1934) : 

 No galls found on the two plants in a mixed border otherwise heavily 

 infested. District of Columbia. 



Goff 1936 (96): No infestation found (25 plants, 1 test). Florida. 



Tyler 1938: 35 Infestation heavy on some plants under greenhouse condi- 

 tions (1 prolonged season). [Slight infestation was found on occa- 

 sional plants of 5 varieties; in each of the other 10 varieties tested a few 

 plants showed moderate to heavy infestation.] District of Columbia. 



Tamarindus indica, tamarind. (C) 



Bessey 1911 (16): Nematodes not abundant and no injury observed. 



Tea, see Thea; sasanqua-tea, see Camellia. 



Teff, see Eragrostis. 



Teosinte, see Euchlaena. 



-Tephrosia toxicaria (Cracca toxicaria) . (M) 



Beeley 1939 (14) '- Infestation apparently not observed [Malaya?] nor re- 

 ported [in literature?]; experiments projected. 



Tephrosia vogelii (Cracca vogelii). 



Bally and Reydon 1931 (8): Frequently found infested, may be killed. 



Java. 

 Gadd 1937 (73): Seedlings injured or killed; older plants appear to grow 



normally, even when heavily infested, but may die after lopping. 



Ceylon. 

 Smee 1928 (214)'- Found attacked in Nyasaland. 

 Thea sinensis, tea. 



Barber 1901 (9) : Very destructive for seedlings; close search showed no 



galls on plants 1 to 3 years old in the same nurseries, nor on mature 



plants in four other infested areas. India (Madras). 

 Ceylon Government Entomologist 1920 (34) ' Sometimes occurs in tea 



nurseries, and on one occasion "had thoroughly infested the roots of a 



number of fairly old bushes." 

 Gadd 1928 (72): Nurseries have been partially or wholly destroyed; occur- 

 rence on mature bushes has been recorded in isolated cases. Ceylon. 

 1937 (73): Infestation disastrous to seedlings; old plants become 



"largely immune." Ceylon. 

 Light 1928 (141)'- Capable of exterminating a whole nursery; "the roots, 



especially at the base, are noticeably swollen into galls." Ceylon. 

 Menzel 1929 (161) : Young nursery plants often killed; no significant injury 



found on plants more than 3 or 4 years old. East Indies. 

 Rutherford 1914 (203): Chief injury above or below the collar, which is 



swollen and corrugated; "the root did not show any very conspicuous 



swellings"; several seedlings died. Ceylon. 



Thunbergia spp., clockvine, thunbergia. (C, N) 



Goff 1936 (96): Rated as "very lightly infested"; no infestation found (14 



plants) in 1 test where the infestation on other species also was relatively 



light; infestation to moderate in a second test (25 plants). Florida. 



Giant stem galls were reported on T. grandifiora and on T. laurifolia by Steiner, 

 Buhrer, and Rhoads (223) , with the remark that the plants did not seem to suffer 

 much; severe injury was reported on T. fragrans by Bessey (16). 



Timothy, see Phleum. 



Tobacco, see Nicotiana. 



Tomato, see Lycopersicon. 



Torenia fournieri, blue torenia. (C, N) 



Goff 1936 (96) : Infestation to light (47 plants, 2 tests). Florida. 



Steiner and Buhrer 1933: 38 Infestation found. District of Columbia. 



" See report of Tyler on p. 140 of reference given in footnote 4, p. 6. 

 39 See footnote 66, p. 41. 



