The study regarding floristic composition of tailings dumps from Moldova Noua, in order the reconstruction ecological

In Moldova Nouă, the main pollutant is the ex-decantation lake in Tăuşani, belonging to the S.C. Moldamin S.A. During the period 1988-1990, the Caraş-Severin County Enterprise for the Maintenance and Exploitation of the Grasslands executed land modelling works on the slopes by planting perennial grasses in mixture. Since the completion of the modelling and planting of the slopes of the decantation lakes failed, there have been tailings dust pollution carried away by the very strong air currents. In this paper, we present a study of the floral composition of the tailings dumps in Moldova Nouă and a situation of the plant species resisting in this area. The inventorying of the plant species growing on the managed dumps has been done with the Braun-Blanquet method (1964), a method cited by Arsene (2003). We identified the measure in which the floristic composition has changed, the new species produced through self-seeding and we identified the dominant species. Results concern the structure of the plant cover already existing on the tailings dumps in Moldova Nouă from the point of view of the main technological groups of plants and of the biodiversity. In order to include the dumps in the Moldova Nouă area into the economic cycle, we need to re-cultivate it. Re-vegetation should be done with perennial plants and weeds specific to the area (Trifolium pratense, Trifolium repens, Festuca rubra, Dactylis glomerata, Achillea millefolium, Lotus corniculatus, etc.), that are not soil demanding, that are diseaseresistant and that produce large amounts of vegetal material both underground and on the ground. The highest percentage of seedling was in the acacia, Russian silverberry, bird cherry, lilac, and sea-buckthorns

Arbuscular mycorrhizal root colonization of two species from the genus Plantago

The percentage of arbuscular mycorrhizal root colonization was assessed for two species of Plantago: Plantago lanceolata and Plantago major, sampled from different locations. Ten samples were analyzed for each species by using the Trypan Blue staining technique. The study was intended to estimate the level of arbusculat mycorrhizal colonization (AM) of the two species of Plantago and compare the results obtained. The percentage of mycorrhizal colonization was on an average of 27.74% for Plantago major and 40.17% for Plantago lanceolata, the difference between the two species being of 12.43%. Trypan Blue staining provided a good contrast, fine mycorrhizal structures (hyphae and arbuscules) being emphasized on the microscope. The analysis of variance (ANOVA) shows that the means are significant for data distributions in the two species of Plantago. Kurtosis indicator had different values, the average distribution of the species being platikurtic for Plantago lanceolata (low variability in the data string) and leptokurtic for Plantago major (high variability)

STUDIES REGARDING THE INFLUENCE OF IRRIGATION ON FRUIT YIELD AT APPLE TREES IN IARA - TURDA, TRANSYLVANIA CONDITIONS

The paper presents the results of the experiments that were carried out during 2012-2014 period, in the Iara-Turda depressionary area conditions. The research`s general objective is the study of agroproductivity at Jonagold, Florina, Generos, Idared, Jonathan, Granny Smith and Golden Delicious apple varieties, all grafted on to a semi-vigourous M106 rootstock. The influence of the irrigation and fertilization regime was studied in an polifactorial experiment that aimed the study of the interactions of three factors and the specific and cumulative effects on growth and fructification parameters of the apple tree varieties in the pedoclimatic context of the studied area. The present paper refers only to the interaction and effect of the irrigation regime in relation to the studied factors

THE INFLUENCE OF GENOTYPE, TREATMENT AND STORAGE PERIOD ON AGEING PROCESS OF HYBRID CORN SEEDS

The ageing process of corn seeds is an important economical and quality factor in corn growing, therefore the study of the impact of factors that influence the quality of the seeds during the storage period as well as their interaction has to be carried out in order to improve the process of storing seeds. Different types of methods can limit the ageing process and expand the storing period, such as treatments applied to seeds in order to reduce the fungal, bacterial and other infestations as well as monitorig and creating a constant environment in the storage facilities, but a great influence in the storage capacity of corn seeds is due to the bilogical material, the corn hybrids