StatusThe thesis was presented on the 3 July, 2009
Approved by NCAA on the 1 October, 2009
Abstract– 0.43 Mb / in romanian
– 0.59 Mb / in russian
It was established the influence of crop rotation, permanent crop and fertilization on biological indexes of soil fertility and productivity of winter wheat and sugar beets.
The folowing indexes of soil fertility have been used: the content of humus and the stocks of labile soil organic matter, microbial biomass, the soil respiration, fitotoxicity, enzimatic and celulosolitic potential, the quantity and the mass of earthwarm etc. The regularity was proved regarding the higherst biological indexes in meadow and the lowest in black fallow. Winter wheat and sugar beets in both crop rotation and permanent crops had the intermediate position.
Fertilization is increasing the biological indexes on variants with sugar beets and winter wheat irrespective of ways of crop growing (in crop rotation or in permanent crop).