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CNAA / Theses / 2011 / June /

Variation in some agroecosystem indexes under the influence of climatic and agrophytotechnical factors

Author: Gîrla Daniela
Degree:doctor of agriculture
Speciality: 06.01.15 - Agroecology
Scientific adviser: Valentin Ungureanu
doctor habilitat, professor, Agrarian State University of Moldova
Institution: Agrarian State University of Moldova


The thesis was presented on the 17 June, 2011
Approved by NCAA on the 11 November, 2011


Adobe PDF document1.01 Mb / in romanian


agroecosystems, crop rotation, permanent crops, methods of weed management, field crops, yields of field crops, soil water regime, stocks of soil organic matter and biological properties of soil


The thesis contains 138 pages, of which 53 tables, 4 figures, 12 photos, 6 annexes. The bibliography contains 232 references. The results are published in eight scientific papers.

Field of study: Agroecology.

Purpose and objectives of thesis. Highlighting the factors that limit the productivity of agroecosystems: crop rotation, permanent crops, weed control method, systems of soil tillage and fertilization in crop rotations, water regime, stocks of soil organic matter and biological characteristics of soil, etc.

Research Methodology: itineraries and laboratory analyses, long-term field experiments.

Scientific novelty. For the first time weeds were studied as producents in agroecosystems. Researches in polyfactorial experiments have allowed to put in evidence the influence of crop rotation and permanent crop, systems of soil tillage and fertilization in crop rotation, systems of integrated weed management, in different climatic conditions for the studied years on, biological indexes of soil fertility and productivity of field crop in crop rotation.

Theoretical significance. Biodiversity in agroecosisystems together with agrofitotehnical measures for the management of soil fertility and crop productivity serves as the basis for providing soil functionality and sustainable development of agricultural sector in the Republic of Moldova. Applied value. The results obtained can be used in the motivation and implementation in the Republic of different agricultural systems (traditional, sustainable, organic, etc.) and different tillage systems (conventional, superficial, combined, etc.) and the educational process as a teaching and scientific activity.

Implementation of scientific results. Scientific research results are implemented in household SRL”GAVANOASA-AGRO” the village Gavanoasa, district Cahul on area of approx. 73,0 ha.