No abstract

Soil contamination is one of the most important factors influencing the quality of agricultural products. Usage of heavy farm equipment, the land drainage, application of inadequate agrochemicals, emissions from mining, metallurgical, chemical, coal power plants and transport, all generate a number of undesired substances (nitric and sulfur oxides, PAHs, heavy metals, pesticides), which after deposition in soil may influence crop quality. Thus, the input of these contaminants into the environment should be carefully monitored. This paper presents the data obtained for organ chlorinated pesticides, their residues, PCB and chlorine benzenes in the soil, tomato plants and fruits of agricultural areas. The samples were taken in March 2014 in the Dukagjini Part, in the village near the Peja and we collect 12 samples. The analysis of the organ chlorinated pesticides was performed by gas chromatography technique using an electron capture detector (GC/ECD). Optima-5 (low/mid polarity,) capillary column was used for isolation and determination of organ chlorinated pesticides. Interpretation of data was performed using cluster analyze models. Relatively low concentrations of organ chlorinated pesticides and their metabolites were found in the studied samples. Two were the main groups, DDTs and HCHs. The presence of organ chlorinated pesticides residues is probably resulting from their previous uses for agricultural purposes. PCB 52 was the main congener found in soil samples and hexachlorobenzene was the main compound for chlorinated benzene compounds.

The main goal of this research has been to investigate the efficiency of chemical preparations and their sustainability of apple cultivars against powdery mildew pathogen (Podosphaeraleucotricha) .Three cultivars of apple (Jonathan, Idared and Vizajkanative cultivars) have been tested in experimental fields (in the municipality of Peja, Kosovo) during the two years of research (2013 -2014) .Fungicides that are used were: Webeton (triadimefon), Rubigan (fenarimol), Karathan EC (dinocap) and Kossan WG (sulfur). During the vegetation has been made eight spraying, three spraying before the blossoming and five spraying after the blossoming, within a period of 10-15 days between spraying and sprinkling. After that, there have been done three evaluations of the disease and the results obtained have been processed according to Mc Kinney index. Through the processed results has been seen that higher efficiency of chemical preparations has been in the and in Rubigan and Karathan combination EC (variant -B1), during the two years of the research. Whereas, regarding the suitability of cultivars to pathogen, cultivar "Vizajka" (native cultivar) showed the highest sustainability against disease pathogen, where, the index in the first and second year of the research has been lower in all variants as well as to control compared to two other cultivars. While, the most sensitive cultivar against powdery mildew pathogen was Jonathan with the higher disease index compared with two other cultivars.

Six maize hybrids F1 generation from Croatia were tested, during the growing season, in agro-climatic condition of Kosovo. The investigation has been performed in micro trials set up at the two most important agro production sites of Kosovo, Peja and Pestova, in which trials has been investigated the yield, crude, protein, content and other relevant traits of. Maize (Zea mays L.) is one of the most important field crops that are regularly cultivated each year in Kosovo with an area 70000-90000 ha with some oscillation [3]. Grain yield per surface unit is one of the most important trains that influence directly for arent ability and economic production [9]. The average grain yield of maize in the last years the main agro-production localities of Kosovo is very low ranging from 4.0-5.5 t/ha. For an economic and sustainable production of maize there is necessary to have high yield hybrids, optimal agro-climatic conditions, modern agriculture mechanization and application of proper plant protection measures the yield is very complex trait that depends by genotype of maize and environment conditions, as well [1], [2]. During the cropping season, the micro trials were established in two most important agro-production localities of Kosovo to investigate the performance of ten maize hybrids from the region with the aim of their introduction into the national list of varieties Kosovo. The perspective maize hybrids. The obtained result showed that there are statistically significant differences among the maize hybrids compared with standard check, with regard to the grain yield, crude, protein contents and other traits. Such statistically significant differences have been observed between localities as well.