This paper's aim is to identify new castor bean genotypes created at Agricultural Research and Development Station Teleorman in Southern Romania, with an improved productivity and adaptability to the area's environmental conditions. The study has dealt with 15 castor bean genotypes during three years' time (2013)(2014)(2015). The experiment was made according to the fully randomized block method, in three replications. The results of the variance analysis have shown that there was a significant difference between the castor bean genotypes regarding the grain yield. The three years' average yield has shown that both lines T 647/02 (2711 kg/ha) and T 2410 (2529 kg/ha) and the varieties Rivlas (2701 kg/ha) and Dragon (2451 kg/ha) have registered the highest productions, with significant production supplies (623-883 kg/ha) compare to the control variety Cristian (1828 kg/ha). The crops stability was estimated by the means of the variability coefficient. The correlations analysis showed that there are strong relationships between productions and productivity elements: the seeds' weight per primary raceme (r=0,992), the capsules' weight per primary raceme (r=0,925) and the number of seeds per primary raceme (r=0,841), as well as between the productivity elements: the capsules' weight and the seeds' weight per primary raceme (r=0,929), the weight and the number of seeds per primary raceme (r=0,832), the capsules' weight and the number of seeds per primary raceme (r=0,736). Also, there are significant positive correlations between the plant's height with the insertion height of the primary raceme (r=0,625) and the primary raceme length (r=0,625). There is a significant negative correlation between number of seeds per primary raceme and weight of a thousand seeds (r=0,586). The results achieved in the study suggest that the castor genotypes are productive and adapted to the weather conditions in South Romania, recommended to be grown in this agricultural area.

No abstract

In the context of world agriculture, the application of chemical fertilizers remains one of the main ways to increase agricultural production, manage crop quality and improve soil fertility. The application of cultivation technologies, meant to lead to the improvement of agricultural production, determines biological, chemical, physiological changes in the plant and in the soil.

In the course of time, grains have been and will always be a group of plants of utmost importance to the human existence and activity. Among these, wheat is the main crop used as raw material in the milling-bakery sector (basic food sector). I considered it appropriate to develop a study in Teleorman county on the bakery quality of the varieties of wheat. We analyzed the quality of the production by several indices for 4 varieties of wheat (Boema, Dropia, Flamura 85, Fundulea 4): wet gluten content, dry gluten content, deformation index, gluten index. Determining these indices the laboratory analyzes were performed in two repetitions, for 3 years. We studied pure varieties, as well as mixtures between them in different proportions.

The aim of the study was to determine the various ways of fertilization of wheat, in accordance with characteristics of the chosen varieties, pre-plant and the pedo-climatic conditions specific to the Burnas Plain. Through the research, the quantitative and qualitative increase of the wheat production, the differentiation according to the biological material used (variety) was pursued, all based on the use of 5 variants of fertilization, emphasizing also the costs involved by each of them-parallel input-output for the economic efficiency of culture. The results obtained from the experiments carried out during this period offer, as a novelty element, multi-level comparisons between the Romanian wheat varieties and the Austrian premium varieties provided by SC Probstdorfer Saatzucht Romania SRL [1]. The researches took place in the Burnasului Plain, within the S.C.D.A. Teleorman (Drăgăneşti-Vlaşca), on soils of the molisoluri type, cernoziom cambic type, with medium, clay-claytexture..The research that led to the production of production results is extremely different, depending on the environmental conditions (among which the climatic ones had the greates timpact) on the influence of the fertilizers and the wheat varieties used in the study. Production results show that any of the fertilization variants yields significant wheat yields. With the exception of the Biovin 150kg treatment only, when production increases by 15.48-23.31% compared to the untreated control (maximum 896 kg / ha in 2014-2015), all other fattening systems (N80, P80 and complex-N80 + P80 + Biovin 150) are statistically assured in the favorable years (2014-2015, 2015-2016.) with increases of 40-75%-2373.33 kg / ha at N80, 2863.33 kg / ha at P80 and 2869.33 kg / ha at the complex in .2014-2015. The data showed that, as a whole, Romanian varieties .are better responding to this differentiated fattening (N80, P80, Biovin 150) compared to premium varieties. Regarding the application of the NPB (N80 + P80. + Biovin 150) complex, both Romanian and premium varieties offer similar production incrases.