| [studies on the effects of atrazine and simazine on the n-binding bacteria azotobacter and beijerinckia in the ferralitic soils of cuba]. | in two cuban locations (santiago de las vegas and jovellanos) the effect was investigated of increasing atrazin and simazin applications (0, 4, 8, 16 kg/ha) to the number of azotobacter and beijerinckia colonies in weakly ferrallitic soils 7 and 15 days after their application during the rainy and dry seasons. the results were as follows: 1. the number of the beijerinckia colonies is higher in all variants than that of azotobacter. 2. beijerinckia and azotobacter are stimulated up to 7 days, par ... | 1978 | 728049 |