Tech. F:3 



townsbei';^'', B. F., -^nd J-. W. Lownsbery, 1956. A procedure for testing 

 'the sterj.lity of large rt'tutibers of nematodes after treatment with vari- 

 ous sterilants. Plant Dis. Reptr. hO(ll) :9B9-990. 



Holdeman, Q. L. , 195U. Value of greenhouse tests in evaluating the 

 host range of nematodes. Plant Dis. Reptr. Supplement 227:Bl-82. 

 Consideration of some of the factors in evaluating tests for the host 

 range of nematodes. Should be read by all who contemplate work of 



this type. 



-!!- -;<■ -Si- 

 Pitcher, R. S., 1957. A critical review of current techniques for the 

 study of migratory root nematodes as etiological agents. Nematologica 

 2 (Supplement) :Ul3-U23S. An excellent revievr paper which will be of 

 use to anyone planning work on pathogenicty of plant-parasitic nema-* 

 todes . 



Miscellaneous 



Korsten, L. H. J., J. W. Sieben, and L. Voskuyl, 1953. A colorimetric 

 determination of the number of eelworms in a suspension. Buphytica 2: 

 135-138. A quick method of determining the nematode concentration in 

 a suspension used for inoculation. The percentage absorption of a 

 quantity of nematodes in an aqueous solution of carboxymethlcellulose 

 is determined and, by comparison to a standard curve, the number of 

 nematodes per ml. is found. A suspension of a given concentration can 

 be made. 



■5<- -il- -5'- 



Feldmesser, J., and W. A. Feder, 195U. Maintaining and determining 

 viability of nematodes in vitro. Soil Sci. Soc. Fla. I5:l5i;-l56. 

 Discussion of a problem of obvious interest when viability of the 

 nematodes must be determined. Various techniques are discussed for 

 determining viability and for. maintaining in vitro populations of 

 nematodes under ideal conditions for examination. 



■Yi- -;(■ it 

 Jensen, H. J., F. E. Caveness, and R. H. Mulvey, 1951i. A modification 

 of Thome's technique for examining soil diffusion patterlis of nema- 

 todes. Plant Dis. Reptr. 38(9):680-686. Detailed description of a 

 method using standard materials which can be applied to other situa- 

 tions in which nematode distribution or profiles are Involved. 





