The aim of this study was to study the impact of crop load on the yield and grape quality of ‘Merlot’ and ‘Vranac’ (Vitis vinifera L.) in Trebinje vineyard. The crop load levels studied in this trial were 9 buds (V1) and 12 buds (V2) per vine at each variety trained on Lenz-Moser bilateral cordon system. The impact was determined by measurements of yield per vine and grape quality characterized by the contents of total soluble solids, titratable acidity, total phenolics, total flavonoids and by total antioxidant capacity. The measured parameters of grape quality of ‘Merlot’ and ‘Vranac’ were not influenced significantly by crop load levels. V2, compared to the V1, showed the potential for increasing grape yield only for Merlot variety under experimental conditions. The results of this study also showed a positive correlation between total phenolics/flavonoids and total antioxidant capacity of grape berries in both varieties, regardless of crop loads applied.

The two-year experiment (2008 and 2009) on new introduced table grape variety Victoria was carried out in the commercial vineyard in the conditions of Nerezi vine district, Capljina Municipality. This study the influence of different bud load levels was investigate on grape quality of cv. Victoria under given environmental conditions. The experiment was conducted by random selection method in four variants with different bud load levels per grapevine (19, 24, 28 and 33 buds per grapevine), each variant being repeated four times with 6 vines repeating. Variant II(24 buds per grapevine) had, in two-year experiment, the average value of the largest cluster weight (599.78 g), the cluster berry weight (573.25 g), and the mass of the cluster stems (12.5 g). The average content of sugar in the grape must was slightly higher in variants I and II (14 %) compared to other variants, while the highest average content of total acids had variant III (4,06 g/l).

Summary The paper presents three year research on qualitative characteristics of introduced peach varieties: Maycrest, Spring Lady, Rich Lady and Elegant Lady, and standard variety Springcrest in Herzegovina. The varieties were described according to the method of the International Board for Plant Genetic Resources (IBPGR), including subjective assessment. The highest marks for attractive fruit were given to the varieties Rich Lady and Elegant Lady, that are characterized by extremely large fruit, attractive blush colour, and easy stone adherence. Early and medium ripening varieties (Maycrest and Springcrest) are characterized by extremely firmness of flesh which provides greater transportability. The highest stone cracking was found for variety Maycrest, the lowest was noticed for Elegant lady, while the other varieties have medium stone cracking (mark 5). Concerning stone adherence, clingstone was found for the varieties Maycrest and Springcrest, semi-freestone was noticed for the variety Spring Lady, while varieties Rich Lady and Elegant Lady had free stones, actually it is completely free from flesh, characteristic which is highly appreciated by consumers. Key words: peach, fruit, flesh, stone

Cilj ovog istraživanja je bio ispitati sadržaj toksičnih teških metala Cd, Cr i Pb u intenzivnom nasadu jabuke sorte Idared, smještenom na području općine Goražde, te utvrditi njihovu akumulaciju u plodovima jabuke. Sadržaj Cd, Cr i Pb u ispitivanim uzorcima tla i plodova jabuke određen je metodom atomske apsorpcijske spektrofotometrije. Prosječni sadržaj kadmija u ispitivanom tlu je iznosio 0.15, kroma 43.98, a olova 47.48 mg kg -1 suhe tvari. Akumulacija navedenih elemenata u plodovima jabuke je bila izuzetno niska. Prisutnost olova i kadmija u plodovima jabuke nije niti determinirana, dok je utvrđeni sadržaj kroma bio znatno ispod graničnih vrijednosti, propisanih od strane WTO (Svjetske zdravstvene organizacije). Rezultati istraživanja su pokazali da se tlo na ispitivanom lokalitetu može smatrati pogodnim za proizvodnju zdravstveno ispravnih plodova jabuke, pod uvjetom da se uzgoj obavlja u skladu s principima integrirane proizvodnje.

Different agro-technical measures are used in growing apples and fruit crops in general in an attempt to increase the rate of photosynthesis and, hence, both the quantitative and qualitative value of the fruit. Very rapid and effective results in terms of an increase in the above parameters can be achieved through adequate fertilization adapted to plant requirements. Fertilization can substantially alter and disrupt the course of plant development if fertilizers are inadequately applied, regardless of the adequately pre-determined plant nutrient requirements. The objective of this study was to evaluate the effect of four different types of fertilization on the pigment and antioxidant content of apple cv. Idared (Malus domestica cv. Idared) grown in orchards in the municipality of Gradacac. The results obtained show that fertigation and foliar fertilization induced the statistically highest increase in the test parameters. These types of fertilization, if adequately employed, provide nutrition to plants according to their requirements at a specific phenostage, leading to increased yields and enhanced fruit quality, and indirectly reducing nutrient leaching from soils – a frequent accompanying manifestation of other fertilization types.

The goal of this paper, based on analysis of physical and chemical characteristics of fruit itself, is to determine to what extent the introduced varieties of cherry-stela and burlat have become adaptable to agro ecological conditions of Herzegovina region. Analysis showed that regarding fruit dimensions and fruit stone mass, there arc recorded larger values of stela variety compared to burlat variety. However, statistically variety stela had shorter stalk compared to variety burlat. Variety burl at had significantly larger value s of most important chemical characteristics (total soluble dry matter and total acids). Both tested varieties have one or several positive characteristics and the author can recommend them for commercial production.