Annals of the University of Craiova - Agriculture, Montanology, Cadastre Series
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ASPECTS REGARDING THE PHYSIOLOGICAL PARAMETERS IN SOME LOCAL POPULATIONS OF CAPSICUM ANNUUM SSP. GROSSUM UNDER STRESS CONDITIONS
Get PDFIn this paper are presented results regarding the physiological behavior of some local populations of Capsicum annuum ssp. grossum, cultivated compared to the control variety Cornel on sandy soils from the Research and Development Station for Plant Culture on Sands, Dăbuleni. The researches focused on the effects of thermal stress on the processes of photosynthesis and foliar transpiration, as well as on the productions made in pepper culture. The results obtained underlined the importance of correlating the physiological processes in pepper plants with environmental factors and the yields obtained. Under conditions of heat stress, all local populations analyzed showed values of photosynthesis above the values recorded at the control variant (Cornel variety). The water lost through foliar transpiration was efficiently recovered by the studied local populations, between transpiration and pepper production being established a positive correlation, significant from statistically point of view
STUDY OF SEGETAL SPECIES FROM CULTURES FROM THE SOUTH OF DOLJ COUNTY
Get PDFSegetal plants are that category of species that vegetate in agricultural crops. They grow alongside cultivated plants and represent real competitors.The main objective of this work is to carry out a floristic inventory of all species from agricultural crops in southern Dolj County. The flora and fauna of southern Dolj County have been severely impoverished in the last century due to human intervention, which has turned the area into an anthropogenic steppe. On many areas, natural vegetation has been replaced by agricultural land. A characteristic (segetal) flor is installed on these surfaces. The floristic list of segetal plants in southern Dolj County includes 152 taxa belonging to 36 botanical families. The segetal species with a strong impact on the crops in the researched area are: Sorghum halepense, Cirsium arvense, Ambrosia artemisiifolia, Sinapis arvensis, Veronica hederifolia and Setaria pumila
VIEWS ON SOME OF THE MORE IMPORTANT WEEDS FROM THE CORCOVA VITICULTURE PLANTATIONS
Get PDFThis paper presents an analysis of the seedlings found in the Corcova viticultural center, the degree of spreading, as well as some aspects related to their biology and ecology. Weeds are harmful to agriculture, fruit growing, vegetables and viticulture. The term weed is attributed to spontaneous, herbaceous plants that grow in cultivated or uncultivated places, their presence inducing harmful effects on useful plants. According to the place where they grow, two categories of weeds are distinguished: segetal weeds, they grow in cultivated places; ruderal weeds, grow in uncultivated places
COST-BENEFIT ANALYSIS AND ENVIRONMENTAL IMPACT BY USING COMBINED RENEWABLE RESOURCES IN THE PRODUCTION OF 10 MW OF ELECTRICITY
Get PDFThe aim of the paper is to analyze the two components of renewable energy - the sun and the wind to support a transition to a climate-friendly society, based on sustainable energy supply and consumption, which minimizes the negative effects on natural resources, environment, climate and human health, being both economically feasible and socially acceptable. The paper will analyze the production of 10MW electricity using wind and sun as renewable resources. The study area is Moldova Noua, Romania. The RETScreen Expert software will be used for the analysis
SOIL ANALYSIS IN POTATO CROP PRODUCTION
Get PDFBy considering its high yielding potential and its nutritional value, potato (Solanum tuberosum L.), is an important crop in the agricultural production. The potato potential yield cannot be reached in the production systems as the biotic and abiotic factors interfere with the potato crop by negatively affecting the plant growth and the tuber development. The study aimed to emphasize the importance of the soil analysis for the potato crop. Soil samples were collected in 2020 from farm fields located in Braşov and Covasna departments, where farmers are traditionally involved in the potato production. Considering the registered results, the soil`s content in available nitrogen, phosphorous and potassium, it is essential to perform soil analysis to successfully implement integrated soil – plant nutrient management action plans aiming better quantitative and qualitative tuber yields
DYNAMICS OF THE APPEARANCE THE DIABROTICA VIRGIFERA VIRGIFERA, IN THE CORN CROPS OF NEAMŢ COUNTY, UNDER THE CONDITIONS OF 2020 IN DIFFEREND TILLAGE SYSTEM
Get PDFIn order to establish the optimal moment of carrying out the treatments for the control of the adults, the dynamics of the appearance for Diabrotica virgifera virgifera is very important step in warning of treatments and their effectiveness.The research was carried out, in the corn cultivars from Neamt County. The biological material collected using sticky yellow traps during the year 2020 from June to September.The experience and randomization were organized according to the mode of protection of culture and according to the treatment applied, and thus resulted in three variants as follows three variants : variant 1 - no tillage work system, variant 2, minimum tillage work system and variant 3 , conventional tillage work system. In all variants the soil have was treated with granulated FORCE G 1.5 insecticide, active ingredient 1.5%, (Syngenta) at a dose of 15 kg ha.During the entire period of observation, a total of 5810 adult specimens of Diabrotica virgifera virgifera were collected, where the first alert of the adult was made on 15 Â June, and its last registration was on 15 September
SUNFLOWER YIELD AND YIELD COMPONENTS UNDER FIELD CONDITIONS OF ARDS SIMNIC
Get PDFThis paper presents the results of the research carried out on five sunflower hybrids at ARDS Simnic, Craiova, under the climatic conditions of 2020 year, regarding the number of plants/plot, plant height, head diameter and the yield. Sunflower hybrids were found significantly different as compared to control (Performer) for all the traits studied. Hybrid FD 18E41 proved to be the best with a maximum yield of 3.06 t/ha, a number of plants/plot of 109, a plant height of 139.3 cm, and with a head diameter of 17 cm. This sunflower hybrid can be successfully grown in ARDS Simnic area due to the best adaptation to local conditions
TYPES OF ELECTRIC MOTOR CONTROLLERS THAT CAN BE USED ON AGRICULTURAL ELECTRIC TRACTORS
Get PDFThe development of electric propulsion systems has become a necessity for existing pollution regulations. This article presents a series of electric motor controllers that can be used on small or medium sized tractors. These controllers are easy to mount on tractors, do not require special mounting or positioning conditions, can be used with different types of electric motors and have a number of optional functions that can be activated depending on the chosen configuration. Controllers are intelligent enough to deal with the power or torque provided to the engine or change the way the engine works, switching it from engine to generator
CONSIDERATIONS REGARDING THE DEVELOPMENT OF NEW EQUIPMENT USED FOR HEMP HARVESTING
Get PDFThe important potential of cultivating hemp for fiber and cannabidiol extraction for medicinal use, makes this plant return to the attention of agronomists and medical researchers. Another strength of this plant is the potential of produced fibers to contribute to the decrease in the use of plastic in the near future, helping to reduce dependence on fossil fuels. In addition, hemp could be a more economically attractive alternative for ethanol generation or even for the production of high-strength construction materials. The paper aims to present several technologies used for hemp harvesting
STUDIES ON THE QUALITY AND AUTHENTICITY OF WHITE WINES FROM OLTENIA
Get PDFFor white wines, in addition to the level of the main chemical constituents defined for each category and type, the properties of fruitiness, aroma and expressiveness, typical of varieties and areas of origin, are fundamental quality criteria. In addition, these products must be offered to consumers in a perfect state of clarity and with lasting stability over time. The capitalization of the viticultural potential that Romania has, in order to obtain sustainable competitive advantages on foreign markets, requires the creation and promotion of an identity of Romanian wine, based on analytical investigations to certify the quality and natural chemical composition of wines. Determining the quality and authentication of wines involves several aspects, such as geographical origin, year of production, variety, producer and quality. It is important that the proof of the authenticity of the wine is based on those chemical parameters that do not change during vinification process or that are difficult to falsify.Â