ROOT KNOT NEMATODE INFESTATION 23 



Chenopodium album, lambsquarters. (N, S) 



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



Courtney, W. D. (Division of Nematology, Bureau of Plant Industry. 1937) : 

 Useful as an indicator weed. Oregon. 



Cunningham 1936 (51): Infested weed. New York (Long Island). 



Hauser 1937 (106): Weed attacked in greenhouse. 



Hostermann 1922 (111): Infestation very light. Germany (experimental). 



Lunn and Mattison 1938 (143): Nematode population built up by lambs- 

 quarters. South Carolina. 



Muszynski and Strazewicz 1932 (174): No infestation found. Poland. 



Cherimoya, see Annona. 



Cherry, see Prunus. 



Chestnut, see Castanea. 



Chinaberry, see Melia. 



Chive, see Allium. 



Chloris gayana, Rhodes grass. (C) 



Collins 1938 (41)'- Rhodes grass not attacked (1 season). Rhodesia. 



Godfrey 1935: 30 Infestation commonly observed to be light. Hawaii. 



Chokecherry, see Prunus. 



Chrysanthemum frutescens, marguerite. (N) 



Bosher and Newton 1933: 31 No root knots nor other symptoms. Canada 



(in window box). 

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



A heavy infestation observed (white marguerite) . District of Columbia. 

 Cotte 1912 (48): Var. "Reve d'Or" most heavily attacked, "Mine. Aunie" 



less, and "Coronation" very little. France. [This is a citation of a 



paper by Jumelle and Raybaud, which cannot be found in this country; 



whether or not Cotte also saw the specimens is not clear.] 

 Melchers 1915 (159): Galls found. Kansas (in greenhouse). 



Chufa, see Cyperus. 



Cinchona sp., Peruvian-bark, quinine tree. 



Barber 1901 (9): Pretty extensively "affected," but the trees appear per- 

 fectly healthy; illustration of heavily infested root. India (Madras). 

 Menzel 1925 (160): Not much injury. Netherland East Indies. 



Cineraria, see Senecio. 



Citrullus vulgaris crosses, watermelon. (N, S) 



Bessey 1911 (16): Root knot found on only 4 out of 333 plants of 1 of the 

 strains of watermelon X "citron" bred by Orton for wilt resistance. 

 [There are no reports on nematode resistance in the strains now cul- 

 tivated.] 



Citrus spp. (C, N) 



Bessey 1911 (16): No infestation found on any species of citrus (3 years in 



a part of Florida where root knot is abundant). "Dr. H. J. Webber 



and Prof. P. H. Rolfs . . . confirm this." 

 California Nematode Committee 1925: 32 Citrus roots resistant. 

 Easson (quoted by Cobb 1890 (39)): Roots of orange trees are not troubled. 



[New South Wales.] 

 Gandara 1920 (74)'- "Heterodera radicicola" ("un anelido microsc6pico"!) 



on C. aurantium at a ranch in Yucatan. [Root knot galls in figure 17 



are sketched after Goldi's (98) illustration of coffee roots; the "anguflula" 



illustrated in figure 18 is not H. marioni.] 

 Ghesquiere 1921 (86): Root knot found on several species. Belgian Congo. 



30 See footnote 10, p. 11. 



31 Bosher, J. E., and Newton, W. host preference of the root knot nematode. U. S. Bur. 

 Plant Indus., Plant Dis. Rptr. 17: 18-19. 1933. [Mimeographed.] 



» See footnote 6, p. 8. 



