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A laboratory experiment was completed to determine the effect of the herbicides Alister Grande 190 OD, Fuego 500 SC and Lumax 537.5 SE on counts of actinomycetes as well as the activity of enzymes and their resistance to herbicides. Sandy loam was mixed with appropriate doses of the herbicides, such as: 0 - the control, 1 - technological dose and doses 20-, 40-, 80- and 160-fold higher than recommended...
The objective of this study has been to determine the effect of L-tryptophan on the biological properties of soil. The influence of L-tryptophan, a precursor of auxins, was tested in a pot experiment. Another aim has been to check whether it is possible to enhance the effect of L-tryptophan by increasing the pool of soil-borne Azotobacter spp. bacteria. The experiments were performed on samples of...
A pot experiment on eutrophic proper brown soil developed from loamy sand has been conducted in order to determine the effect of urea phosphate on the counts of selected groups of microorganisms, activity of soil enzymes, nitrifying activity of soil and the value of the potential biochemical soil fertility index. The results have demonstrated that urea phosphate stimulated the multiplication of copiotrophic,...
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