In this paper, author collective present results and methodology of the insecticides testing against maize leaf weevil, in laboratory conditions. Year by year at NARDI Fundulea, in field conditions, it has tested insecticides used both like seed and vegetation treatment for control ling of the maize leaf weevil. Because climatic conditions from the spring are not favorable for this pest every year, laboratory testing is one of the best methods for evaluate of the insecticides used like seed treatment. At eight days after insects are added in the pots with maize plants, highest adults mortality and lowest attack intensity has registered in case of plants emerged from the seeds treated with products on base of thiametoxan ( Cruiser 350 FS ) , clothianidin ( Poncho 600 FS ) or thiametoxan+teflutrin ( Force Zea ) . In case of seeds treated with product on base of imidacloprid ( Nuprid 600 FS 8,0 l/t ) , even if the insects mortality was lower, the attack intensity has low values. All plants from the untreated variant were destroyed. At treated variants, saved plants percent were at least 90 %. Seed treatments provide a satisfactory protection of the maize plants, in first vegetation stages against maize leaf weevil.
Researches presented, are the subject of study on the evolution of soil quality indicators of Romanian Plain, where mainly is chernozem soil type, as a consequence of irrigation. To achieve the objectives we have studied some physical indicators of soil ( bulk density and total porosity ) în the territory concerned, the interpretation of analytical results been performed according to the proper methodology, after taking soil samplings from pedogenetic horizons. Through an analysis of the evolution of chernozem’s soil compaction, due to irrigation’s application, it highlights different soil compaction status correlated with the physical condition of the soil. If irrigated soil, in maize crop, loosening is moderate în the layer 0-10 cm, with values of 1.20 g/cm3,after applying every year of irrigation, it indicates values ranging în a fairly widely, from small (moderately loose soil, with bulk density of 1.23 g/cm3) , the medium ( soil poorly compacted, bulk density was 1.45 g/cm3) . Total porosity values are down slightly throughout the soil profile under the influence of irrigation, values are în the range middle - very high. After applying irrigation are observed physical changes, that induced changes in the balances resulting from damage to structure and structure to appear grainy dust structure and consequently the tendency of poor compaction and physical change of the soil.
Organic farming is becoming more and more important and is constantly expanding. This development is supported by the growing demand of consumers for organic agricultural products, who are becoming more aware and interested in health insurance through the consumption of products, to which are added the requirements of society for sustainable agricultural development and the multitude of favorable effects at the level of the farm and the environment. Organic farming is an agricultural method that aims to produce food using natural substances and processes. Therefore, it has a limited impact on the environment because it encourages: responsible use of energy and natural resources, conservation of biodiversity, conservation of regional ecological balances, increasing soil fertility, maintaining water quality.EU regulations on organic farming aim to provide a clear structure for the production of organic products throughout the EU. Călărași County has, according to specialists in the field, the most productive land in Bărăgan. The purpose of this paper was to present the situation of organic agriculture in relation to conventional agriculture in Calarasi County, in terms of cultivated areas and average production, as well as a brief analysis of data on access to European funds in the county
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