Facultatea de Biologie și Geoştiinţe / Faculty of Biology and Geosciences
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Item DEGRADAREA STRUCTURII SOLULUI CA URMARE A EXPLOATĂRII EXCESIVE ÎN AGRICULTURA CONTEMPORANĂ(Tipografia "Reclama", 2013-09-12) Nagacevschi, TatianaStructure degradation is a process of the greatest practical interest, closely associated with the effects of agriculture in general, and intensive agriculture. In this context structural degradation occurs immediately after soil cultivation, the structure is subjected to the opposite processes: formation of blocks and dispersion. Another direct cause of structure degradation is soil compaction as a result of excessive traffi c, especially on wet soil. Structure degradation in the morphological aspect leads to processes of forming of structural elements of different shapes and sizes but without agronomic value, with insuffi cient porosity and poor hidrostability.Item ACŢIUNEA DIFERITOR METODE DE ÎNTREŢINERE A SOLULUI UTILIZAT SUB LIVEZI ASUPRA PROPRIETĂŢILOR LUI FIZICE ŞI CHIMICE(Tipografia "Reclama", 2013-09-12) Grițcan, Sava; Nagacevschi, TatianaContemporary requirements necessary to develop a national strategy based on a scientifi cally based concept, oriented to effi cient use, control of productivity and protection of soils. Method of soil maintenance in orchards infl uences soil fertility: humus content in sodded and mulched with substrate variants is higher in comparison with fallow land; congruent are characterized soil physical properties. Sodding, mulching space between rows should be alternated with fallow land and in strips along the line should be alternated mechanical, biological and chemical methodsItem EFICACITATEA FERTILIZANTULUI FOLIAR –REACOM PLUS(CE UASM, 2013-09-27) Grițcan, Sava; Dadu, Zinaida; Polihovici, Lidia; Crivaia, Parascovia; Nagacevschi, TatianaThe article contains the results of a 2 year study of biochemical composition of apple fruits grown with the use of water-soluble fertilizers as well as of integrated products. It was established that weather conditions influenced the content of monosahara, sucrose separately and less their amount together. The content of dry substances and vitamin "C" remains unchanged. Application of fertilizers on tree development phases has a positive influence on biochemical composition of fruits. It was researched the comparative efficiency of foliar treatment of apple trees with the water-soluble complex fertilizer (Reacom Plus, Fosmex) as well as fertilizers containing nitrogen applied by installments on the background of fertilizers with phosphorus and potassium. It was established that the physiological state of the apple trees improved, the apple harvest increased and duration of fruits storage enhanced.Item INFLUENŢA NUTRIŢIEI CU FOSFOR ŞI FIER ASUPRA DEZVOLTĂRII NODOZITĂŢILOR LA PLANTELE DE SOIA ÎN CONDIŢII DE SECETĂ TEMPORARĂ(Tipografia "Reclama", 2013-09-12) Rotaru, Vladimir; Bîrsan, AnaLow-phosphorus availability and water stress are main environmental constraints of soybean growth and nodulation. A pot experiment was carried out to investigate the effect of phosphorus (P) and iron (Fe) application on nodulation in water-stressed soybean plants. Phosphorus (KH2PO4) and Fe (FE-EDTA) were applied in soil in dose 100 mg per kg of soil and 5 mg respectively. One set of plants was subjected to suboptimal water regime (35% WHC) at flowering stage for 12 days. Another set served as control was grown at normal moisture of soil (70 % WHC). Nodulation and plant growth were significantly decreased by low nutrient supply and drought. Combined effect of drought and P deficiency decreased most the growth of nodules and plants of both cultivars Zodiac and Licurici. Supplemental P nutrition alone or in combination with Fe significantly increased nodules biomass irrespective of soil water regime. However, its effect was more pronounced on cultivar of Licurici. It is concluded that harmful effects of water deficits can be attenuated by adequate nutrition with P and Fe of soybean plants.Item CONSIDERAŢII METODOLOGICE PRIVIND STUDIILE ENCICLOPEDICE NAŢIONALE CU REFERIRE LA GEOGRAFIE(2013) Sochircă, VitalieIn articol sunt abordate unele aspecte cu caracter metodic privind studiile enciclopedice geografice din Republica Moldova. S-a realizat o analiză a studiilor anterioare din „Enciclopedia Sovietică Moldovenească” (1970–1981), comparativ cu cele în curs de desfășurare (ediţia nouă a enciclopediei), având la bază Ghidul „Recomandări metodice pentru autorii și redactorii Enciclopediei Moldovei”.Item DINAMICA NUMERICĂ A POPULAŢIEI ÎN REGIUNEA GEOGRAFICĂ CENTRALĂ A REPUBLICII MOLDOVA ÎN PERIOADA 1989-2011(2013) Sochircă, VitalieThe article is a study on population geodemographic dynamics in Central Geographic Region of the Republic of Moldova during 1989-2011. Identify patterns and trends in population dynamics and analyzing the general dynamics of the region and districts in the context of demographic transition theory. In the study were used the following methods: statistical-mathematical, graph-analytic and cartographic. The study includes various materials and information on the population dynamics and can be used for educational and practical purposeItem PRODUCTIVITATEA MICROALGEI VERZI DUNALIELLA SALINA LA CULTIVARE ÎN PREZENŢA UNOR COMPUŞI AI Ge(IV(CEP USM, 2013-09-26) Bivol, Cezara; Zosim, Liliana; Elenciuc, Daniela; Djur, Svetlana; Olan, Olga; Batîr, LudmilaItem CARACTERISTICA INDICILOR TROMBOCITARI ÎN DIABETUL EXPERIMENTAL PE FONDUL ADMINISTRĂRII EXTRASULUI DIN SPIRULINĂ CRESCUTĂ PE APE REZIDUALE DE LA COMPLEXELE DE BOVINE(CEP USM, 2013-09-26) Bacalov, Iurie; Bacalov, IrinaItem PURIFICAREA PARŢIALĂ A PROTEAZELOR EXOCELULARE OBŢINUTE LA CULTIVAREA MICROMICETEI TRICHODERMA KONINGII CNMN FD 15(CEP USM, 2013-09-26) Ciloci (Deseatnic), Alexandra; Bivol, Cezara; Kolker, Tatiana; Reva, VeaceslavItem IMPACTUL STRESULUI HIPOTERMIC ASUPRA ACTIVITĂŢII HORMONALE A GLANDEI TIROIDE(CEP USM, 2013-09-26) Corlăteanu, Alexandr