Annals of the University of Craiova - Agriculture, Montanology, Cadastre Series
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RESEARCHES ON SOIL CONTAMINATION WITH HEAVY METALS AND THEIR REMANENCE IN VEGETABLES
Get PDF The paper presents the results of experimental researches on soil contamination with heavy metals (copper, lead, zinc) in different concentration each (c1=1.5 %; c2=3.0 %; c3=4.5 %; c4=6.0 %). The contaminated soil was placed in pots, where spinach and radish seeds were planted. The vegetables were grown in a greenhouse until the end of the vegetation period, afterwards being harvested and the remanence of each heavy metal for each concentration was determined for each plant. The results obtained were compared with the blank sample where the soil was not contaminated.       The purpose of the study was to identify the levels of heavy metals (Cu, Zn and Pb) transfer/absorption from the soil into spinach leaves respectively radish roots
CONSIDERATIONS ON THE EXTRACTION TECHNOLOGY OF SUGAR SORGHUM JUICE
Get PDFLately there has been an increase in drought periods but also an increase in population and therefore in consumption of food and fuel while arable land remains the same which leads to the cultivation of species with high energy potential and high nutritional potential as drought resistant, species of sorghum. The sorghum is used for: food (flours, juices, syrups, vinegar, etc.), for animal feed, but also in the industry for fuel, energy, building materials, paper, proposes to carry out an analysis of the technologies for obtaining juice from sorghum
THE SUITABILITY OF SOILS IN THE AREA OF THE COMMUNE DIOSTI, DOLJ COUNTY, FOR DIFFERENT CROPS AND, IN PARTICULAR, FOR HORTICULTURAL PLANTS
Get PDFThe importance of the soil evaluation work consists in that the evaluation marks establish the uses and cultures most indicated on a certain field. The evaluation marks are variable and depend on the characteristics of the soil, the crop varieties and hybrids used, the technologies applied, etc. From the analysis of the physical, hydro-physical and chemical properties of the soils in Diosti commune, Dolj County, and their distribution by modes of use, it is found that the largest surface is suitable for arable use; the horticultural plants are suitable on a smaller surface. The productions obtained during the period when the observations were made (2015-2018) at the main horticultural plants are average or tend towards the upper part of the production recommended by the technology. In 2018, with apple tree, a production of 12.5 t / ha was obtained. In 2016 and 2017, the production was 11 t / ha. The average over the 4 years was 10.7 t / ha. The plum tree yields were between 5.5 - 7.0 t / ha. These obtained productions are due to the culture system with large distances between trees and the climatic conditions in the area but also to other factors such as not applying the phytosanitary treatments in time
THE INFLUENCE OF INTERACTION ORGANIC FERTILIZATION x MINERAL ON FOOD COLLECTION IN TEMPORARY MEADOWS IN THE OLTENIEI AREA
Get PDFFertilizers play an important role on the temporary grasslands in order to obtain a spontaneous crop of good quality feed. When applying manure with a modest dose of phosphorus (P50), the harvest difference is over 2t / ha d.s. compared to the variant that did not receive this macro element. Also, a modest fertilization with nitrogen of N75-100 applied on an organic material, the harvest increase becomes considerable
MORPHOLOGIC AND BIOMETRIC OBSERVATIONS ON ALMOND ‘TOHANI`CULTIVATED FORMS LEAVES
Get PDFThe paper presents a research model of leaf investigation, based on biometrical measurements and morphological observations. In literature, there are onlyfew studies concerning the biometrical investigation and analysis applied on spontaneous and cultivar plants leaves. The article comprises biometrical investigations on 3 PrunusamygdalusBatsch. (almond) cultivated ‘Tohani` forms (cf)(‘Tohani P1/7` – Row 1; ‘Tohani P23` – Row 3 şi ‘Tohani 13` – Row 16) leaves. The measurements included: linear measurements, percentage ratios, angular measurementsand other measurements such as the number of teeth/cm, the number semi-sum of secondary pairs of veins and the the leaf surface through which it was possible to determine the size class. The biometric measurements were the basis of a mathematical calculation formua of the average values on the studied genotype. Based on the biometric measurements it could make a more complete morphological characterization of the leaves of this almond cultivars plants
IMPROVING THE ENERGY CONSUMPTION OF AN INTENSIVE RECIRCULATING ACQUACULTURE SYSTEM USING A WATER-WATER TYPE HEAT PUMP
Get PDFAquaculture efficiency practiced in recirculating systems depends on a variety of factors, among which the most important is the energy consumed by the whole system. In order to assure a high degree of energy conservation, in a recirculating aquaculture system has to be maximized the recirculating water degree and has to be imposed the use of renewable energy sources for heating, respective for cooling the water within system as well as of hall. Maintenance of an appropriate climate in a recirculating aquaculture system involves high energy consumption, determined by high water quantities which have to be heat or cool, as well as determined by maintaining water temperature and of breeding space. An optimal solution for replacing conventional systems of heating/cooling and optimizing of energy consumption is the use of the heat pumps. In the present paper are presented experimental results performed with a heat pump of water-water type at different water replacing rates and two different water flows for demonstrating efficiency of a heat pump for improving energy consumption of a RAS
THE INFLUENCE OF WHEAT AND MAIZE CULTURES ON ROTATION AND MONOCULTURE ON THE ENZYMATIC COMPONENTS OF THE SOIL
Get PDFIn order to better characterize the soil's vitality and to assess the fertility level, pedo-enzymatic tests are used along with biotic and / or chemical analyzes. Pedo-enzymatic activities are evaluated in the laboratory to determine the potentials of a soil to release the ammonium and phosphorus required for soil and plant micropopulation nutrition. Pedo-enzymatic processes (pedo-phosphatase, pedo-amidase) are ongoing, to the extent that environmental conditions are favorable. The soil samples taken in the study were harvested from the Am (0-20 cm) horizon of the N0P70 fertilized variant, from the following crops: wheat after soybean crops of a three-year rotation, maize coming from a 4-year field temporarely outside the crop rotation, and from monocultures of wheat and maize. From the data analyzed as a result of this study it results that the crop rotation influences the pedo-enzymatic components of the soil. Total pedo-phosphatase activity in wheat and maize cultivation (rotating) was superior, the results being in the value group compared to the total pedo-phosphatase activity of the soil under the wheat and maize monocultures where the result of the analyzes indicated a much lower, being in b. The total soil pedo-amidase activity of wheat cultivated with maize as a precursor plant was superior, the result being in the a
TRACEABILITY AND FOOD LABELING CONSIDERATIONS
Get PDFThis article presents the current traceability and labeling of foods and how this can be improved with WEB and Cloud Computing applications. The paper label contains details on the traceability and labeling elements applied to products, traceability and labeling elements that are listed under EU and Consumer Guidance on Food (EU) and ways to make this information simpler understandable for end-users and for the competent authorities there is a transparent method of verifying all the information necessary to track and verify the activity of all factors involved in the production, distribution and sale of food product
IMPACT AND EMERGENCE OF CLIMATE CHANGE ON THE SOCIO-HUMAN ENVIRONMENT
Get PDFIn this paper we will consider how the environment affects man, both from a social perspective, in the sense of daily life, and from an economic perspective, in the sense of technological changes that can affect the biodiversity of the environment. In the first part we will approach some philosophical perspectives on human nature and the way in which the environment outlines the society as well as the individual. Furthermore, we will highlight the effects on the environment, the adaptability of both man and the animal and plant kingdom alike - having as reference the O.N.U Conference of 2015 Parties
BENEFITS OF USING ADDITIVES FOR IMPROVING THE QUALITY OF PELLETIZED ANIMAL FEED
Get PDFThe animal husbandry sector is one of the largest in the world. In order to maintain the same effectives of animals throughout the year, the necessary feed needs to be ensured. Due to the fact that the animal feed is seasonal, is important to find ways to preserve the fodder to be used all year. One of the best ways to preserve fodder is to pelletize it. The paper presents a series of researches on the benefits of using additives in animal feed pellets, improving a series of quality attributes, such as overall aspect, durability, single pellet and bulk density