Microbial populations as a function of herbicide nature, concentration, organic matter and soil zones.
1993
Khan Y.H. | Harris R.F.
Two soils, plain field sand and plano silt loam packed in a column divided into surface and subsurface soil zones treated with two herbicides alachlor and atrazine, were plated on to six media containing low to high nutrient bases and selective options. Microbial counts were determined by plate dilution frequency enumeration procedures. Nutritionally rich and relatively dilute nutrient broth (DNB) medium exhibited over all highest counts and wide range of microbial diversity. The overall trend of micro organisms present in different soil zones was of decreasing numbers with the increasing soil depth. The premise with lower microbial counts were attributable to the lower organic matter and nitrogen contents in deeper soil zones. There was no obvious trend in microbial ecology as a function of herbicide nature, concentrations and dynamics in the different soil zones.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Wolters Kluwer