In a two-year field experiment, we studied the extent of damage caused by cabbage stink bugs (Eurydema spp.) on the frame leaves and the outer leaves of cabbage heads in relation to genotype color. We established that the extent of damage varied with genotype color. In both years of the experiment, the affinity of Eurydema spp. toward green genotypes was significantly greater on the first four assessment dates (from the third decade of May to the third decade of June), while on the remaining dates (from the third decade of July to the second decade of August) we did not establish any differences between the white and red genotypes. Cabbage stink bugs first appeared on white cabbage genotypes. The antioxidative potential conditioned by the content of anthocyanins was significantly higher on the red cabbage genotypes. Research shows that higher antioxidative potential is related to a lower extent of damage caused by Eurydema spp. The average value of antioxidative potential in the cabbage varieties was 0.58 mmol/100 g of the sample, while in the hybrids it was 0.47±0.01 mmol/100 g. We confirmed significant differences in values of antioxidative potential between red (0.68 mmol/100 g) and white (0.48 mmol/100 g) cabbage genotypes. Between mid-late (0.55 mmol/100 g) and mid-early (0.53 mmol/100 g) cab- bage genotypes we did not establish differences in antioxidative potential levels, while the average value of this parameter in the early genotypes (0.46 mmol/100 g) was significantly low. We established that the color of plants (cabbage) represents one of the successful factors of antixenosis and has the potential for reducing the damage caused by cabbage stink bugs in environmentally acceptable systems of cabbage production.

One of the major problems confronting agricultural production is heavy metal contamination of agricultural soils, which imposes considerable limitations on productivity and leads to great consumer health and safety concerns about the products obtained on these soils. The objective of this study was to evaluate heavy metal dynamics in the soil-leaf-fruit system in an intensive apple cv. 'Idared' planting located in the Municipality of Goražde. Heavy metal contents in the soil samples and plant material were determined by atomic absorption spectrophotometry using a Shimadzu 7000 AA device, according to the instructions specified in the ISO 11047 method. The dynamics of the heavy metals analyzed, excepting zinc, in the soil-leaf-fruit system was characterized by relatively high total levels of heavy metals in the soil and a very low degree of their accumulation in the leaves and in particular the fruits. No fruit sample was found to have toxic levels of any of the heavy metals analyzed. In terms of soil contamination, this suggests the suitability of the study location for safe apple fruit production.

Trajanje je glavna mjera cenovne osetljivosti koja se koristi na tržištu obveznica. Pokazuje koliko se menja cena obveznice pod uticajem promene tržišnih kamatnih stopa. Između cena i prinosa obveznica postoji inverzna veza preko kamatnih stopa. S porastom i padom kamatnih stopa vlasnici obveznica ostvaruju kapitalne dobitke i gubitke. Osnovni cilj ovog rada je da se utvrdi osetljivost pojedinih obveznica na finansijskom tržištu u BiH s promenom roka dospeća, kao i značaj obveznica kao alternativnog vida finansiranja.