Прегледај по Аутор "GOVEDARICA, Branka"

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    STRUCTURE OF AGRICULTURAL LAND LOSSES IN BOSNIA AND HERZEGOVINA
    (2021) DRAŠKOVIĆ, Branislav; BERJAN, Siniša; MILIĆ, Vesna; GOVEDARICA, Branka; RADOSAVAC, Adriana
    As the world's population grows, so does the pressure on agricultural land. Consequently, there is less and less agricultural land. Bosnia and Herzegovina is one of the countries whose population is decreasing from year to year, partly owing to negative natural increase and partly owing to the migrations of young people to developed western countries. However, despite the depopulation trend, there has been a significant decline in agricultural land in the first two decades of the twenty-first century. The reasons should be sought in various socio-economic processes that crucially affect spatial development. In order to understand the changes that are happening in the field, the paper analyzes the structure of agricultural land losses in B&H based on the database of the European project CORINE Land Cover. In relation to the five main land cover categories (artificial surfaces, agricultural areas, forests and semi-natural areas, wetlands and water bodies), the data show that in the period from 2000 to 2018 artificial areas increased spatial coverage, forests and semi-natural areas as well, while agricultural land decreased. The aim of the research is to identify the spatially largest changes of agricultural land subclasses into other types of land cover, in order to determine the causes and areas with the most intense pressure. This is essential given the fact that agricultural land is becoming an increasingly important natural resource over time. Based on the recent demographic and socio-economic trends, it is to be expected that the trend of decreasing agricultural land will continue in the future, but with a reduced intensity
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    YIELD AND NUTRITIONAL QUALITY OF GREENHOUSE LETTUCE (Lactuca sativa L.) AS AFFECTED BY GENOTYPE AND PRODUCTION METHODS
    (Society of Geneticists of Serbia, 2014) GOVEDARICA-LUCIC, Aleksandra; MOJEVIC, Mirjana; PERKOVIC, Goran; GOVEDARICA, Branka
    Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.). A three-year (2009-2011) study was conducted by randomized block system in a greenhouse without additional heating. The trial included three genotypes of lettuce (Archimedes RZ, Santoro RZ, Kibou RZ). Each row with these genotypes was exposed to the following variants of covering: control-planting on bare soil, mulching before sowing with PE-black foil, agro textile-covering plants after planting with agro textile (17 g), a combination of mulching + agro textile. Throughout of all the three years of the trial, it was continuously evidenced that the genotype “Santoro RZ” had the biggest heads and the highest yield (15.33 kg 10 m-2), which leads to conclusion that the yield of lettuce is a genotype characteristics. Moreover, the nutritional value (ascorbic acid concentration) has shown that, depending on the method of production, in average, the combination of mulching + agro textile (26.77 mg 100 g-1) had the highest content while the control variant had significantly lower vitamin C content (21.10 mg 100 g-1). The three-year researches have shown that the production method and genotype significantly affect the nitrate content. An average nitrate content was 2196.33 mg kg-1 on the control variant, and 2526.24 mg kg-1 on agro textile. Leafy lettuce of genotyp „Kibou RZ“ had lower nitrate content (2176.85 mg kg-1) compared to „Archimedes RZ“ (2843.05 mg kg-1) and „Santoro RZ“ (2221.37 mg kg-1). However, nitrate concentration in all treatments remained within the European Union’s permissible levels.