1. Braithwaite, B. M., Jane, A., and Swain, F. G., Effect of insecticides on sod sown sub clovers. J. Australian Inst. Agr. Soc. 24, 155?157 (1958).
2. Fults, J. L. and Payne, M. G., some effects of 2,4-D, DDT and colorado 9 on the bacteria Rhizobium leguminosorum Frank. in the root nodules of the common bean. Am. J. Botany 34, 245?248 (1974).
3. Jordon, D. C. and Garrard, E. F., Studies on the legume root nodule bacteria I. Detection of effective and ineffective strains. Can. J. Botany 29, 360?392 (1951).
4. Magu, S. P., Gaur, A. C., and Sadasivam, K. V., Effect of lindane on nodulation, grain yield and nitrogen uptake of Cicer arietinum crop. In Abst. symp. Legume Inoculants?Science and Technology, p. 26?27 (1972).
5. Misra, K. G. and Gaur, A. C., Influence of pesticides on root nodulation, growth, yield and nitrogen uptake of groundnut inoculated with Rhizobium sp. In Abst. Symp. Legume Inoculants?Science and Technology, p. 28 (1972).