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Author: Nicorici Maria Degree: doctor of agriculture Speciality:  06.01.01 - General agriculture Year: 2009 Scientific adviser: Boris Boincean doctor habilitat, professor, Research Institute of Field Crops "Selectia" Institution: Research Institute of Field Crops "Selectia"

Status The 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

Keywords

Summary

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).

Oficial Reviewers

• Alexei Gumaniuc
  doctor habilitat, associate professor (docent)
• Constantin Moraru
  doctor habilitat, professor, Institute of Genetics, Physiology and Plant Protection of the ASM

Council's Members

• Grigore Musteaţă , president
  doctor habilitat, professor, Agrarian State University of Moldova
• Maria Vasiliev, secretary
  doctor, associate professor (docent), Technical University of Moldova
• Serafim Andrieş, member
  doctor habilitat, professor, Institute of Pedology and Agrochemistry "N. Dimo"
• Gheorghe Bucur, member
  doctor, associate professor (docent), Agrarian State University of Moldova
• Calina Marinescu, member
  doctor, professor

 Theses