46 MISC. PUBLICATION 4 6, U. S. DEPT. OF AGRICULTURE 



Goffaet 1934 (97): Heavy field infestation. Germany (Berlin-Dahlem). 



Kennedy and Mackie 1925 {123) : Carries nematodes in limited numbers. 

 California (?). 



King 1940 {126a) : Alfalfa rotation appears as effective as fallow for con- 

 trol of root knot; satisfactory yields of American-Egyptian cotton could 

 be maintained if the intervals between alfalfa were' not greater than 2 

 years (rotation practiced for 20 years) . [Arizona.] 



and Hope 1934 (127): Injuries practically negligible in Arizona and 



southern California; rotation maintains cotton yields- in infested areas, 

 but without eradication. [Data in letter, 1939 f Xo reduction in yield 

 of common or Chilean alfalfa in heavily infested land.] 



Krishna Ayyar 1933 (182): "Abundantly infected" in pot experiment. 

 India (Madras). 



Naude1939 (175): Helpful in control rotations with tobacco; no signs 

 of infestation could be discovered on year-old lucerne on land where 

 certain weeds were "heavily affected." South Africa (Oudtshoorn) . 



Sandground 1922 (207): Parasitized more or less severely in South Africa 

 (Basutoland, Natal, or Transvaal). 



Scott, Lindsay, and Harrison 1939 (209): Does not control root knot in 

 the San Joaquin Valley; was formerly regarded favorably for rotation 

 with cotton. California. 



Var. Hairy Peruvian. 



King, C. J. (Division of Cotton and Other Fiber Crops and Diseases, Bureau 



of Plant Industry; in letter, 1939): Tolerant, no reduction in yield. 



Arizona and southern California. 

 Taubenhatjs 1923: 79 Highly resistant. Texas. 



Meibomia, see Desmodium. 



Melandrium album. (C) 



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

 Melia azedarach, chinaberry, "umbrella-tree." 



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

 Melilotus indica. (M) 



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



Neal 1940 (175a) : Resistant; may be used successfullv in rotations. Louisi- 

 ana (?). 



Mesembryanthemum spp., figmarigold. (C, N) 



Grower: Common species "seem untroubled" bv infestation. California. 

 Neal 1889 (176): "Various spp. . . . slightly affected." Florida. 



Six species are known as hosts, each from a single report, without estimate 

 of the amount of injury. 



Mesquite, see Prosopis. 



Mexican-clover, see Richardia. 



Michaelmas-daisy, see Aster. 



Millet, see Echinochloa, Eleusine, Panicum, Pennisetum, and Setaria. 



Milo, see Sorghum. 



Mirabilis jalapa, common four-o'clock. (C) 



Goff 1936 (96): No infestation found in 1 winter test (23 plants); infestation 

 to very light in 2 spring tests (65 plants). Florida. 



Watkins 1929 (248): Mirabilis rated as "resistant." Florida. 



Morus spp., mulberry. (N) 



Bessey 1911 (16): Included among the trees "most generally affected ser- 

 iously" in the south; the four species recorded were given the rating 

 "nematodes abundant, but injury apparently not great." 

 Hume 1937: 80 Not much injurv although heavily infested. Florida. 

 Neal 1889 (176): "Slightly affected." Florida. 



79 Haskell, R. J., and Wood, Jessie I. diseases of cereal and forage crops in the united states 

 in 1922. U. S. Bur. Plant Indus., Plant Dis. Bui. Sup. 27, pp. 164-266, illus. 1923. [Mimeographed.] See 

 report of Taubenhaus, p. 249. 



6 ° See footnote 5, p. 8. 



