Mycorrhizal colonization variation produced by mulching and zinc sulphate overlapped on differentiated fertilization

摘要

Vesicular arbuscular mycorrhizas act in the rhizosphere of plants as regulators of the processes of absorption and transfer of nutrients. High absorption potential show the involvement in nutrients cycle, reducing nutrient losses across the entire ecosystem and enhancing host plant resistance to stress factors. High biodiversity of grassland ecosystems is susceptible to the type of fertilization and maintenance of the land, climate contributing to the accentuation of plants sensitivity. The use of substances based on zinc in order to increase the root system of the plants and at the same time the surface on which will be established mycorrhizal fungi, or mulching, as an alternative to mowing, can act as stabilizers of the effect produced by mineral or organo-mineral fertilizers. Under the same fertilization conditions zinc sulfate acts, generally, to double the intensity and the colonization degree compared to mulching, and the maximum frequency is obtained only in the case of zinc sulphate application.