The effect of tillage on enzymatic activities of haplic luvisol
2007
Mikanova, O. | Czako, A. | Javurek, M. | Vach, M., Crop Research Inst., Prague-Ruzyne (Czech Republic) | Mikhajlovskaya, N., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In a field experimentation conducted in Prague - Ruzyne, two soil treatment systems were applied - a conventional approach (mould board ploughing to a depth, of 0,2 m, seed preparation and sowing) and a protective method (sowing with the use of a John Deere 750 drill). The experiment included following variants: conventional tillage, protective tillage (without post harvest residues), protective tillage (with residue biomass - mulch), protective tillage (covered by pea crop residues for winter wheat, with fore crop). Conventional tillage enables oxidation by increasing the supply of O2 and the organic matter is mineralized more rapidly than in the no-tillage treatment. It is noted that conventional (tillage) results in a gradual decrease of soil organic matter content, depletion of soil structure, which increases risk of soil erosion. In conventional soil treatment, there is a lack of organic matter. On the one hand it is not added in (neither mulch nor straw), on the other hand, the residual post-harvest organic matter is mineralized more rapidly that in the instance of no-tillage. The microbial biomass and soil microbial processes were affected by tillage. In the field experiment there were tested: enzymatic activities (activity of urease, dehydrogenase, arylsulfatase and invertase) and microbial biomass. Results have shown the positive influence of protection tillage on selected biological parameters, especially in variants where soil was supplied with organic matter
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