To identify white cabbage cultivars of suitable agronomic and physical traits for sauerkraut production, 7 domestic varieties and populations as well as 16 imported hybrid cultivars (cvs) were tested in 2001 and 2002 at the family farm. Field trials were laid out according to the randomized block scheme with four replications (plot area 10.4 m2, spacing 0.65 m × 0.4 m). A significant share of undeveloped plants (31 to 56%) was recorded in domestic varieties. Cultivars ‘ Gideon’ , ‘ Cassandra’ , ‘ Fieldwinner’ , ‘ Ramada’ , ‘ Cecile’ , ‘ Krautman’ , ‘ Krautkaiser’ , ‘ Atria’ and ‘ Azan’ stood out with statistically comparable yields (46.4 to 74.7 t/ha). Relatively uniform individual head weight (coefficient of variation less than 25%) was recorded for ‘ Arena’ , ‘ Atria’ , ‘ Krautman’ , ‘ Metis’ and ‘ Ultor’ . Domestic varieties have generally flatter heads than hybrid cultivars (head diameter-to-height ratio 1.25 to 1.55), but they also have a larger relative inner stem height (over 50%). Share of dry matter ranged from 6.39 to 9.96%, soluble solids (°Bx) from 4.0 to 7.0%, while the share of NaCl amounted to 0.10 to 0.17%. Total acidity ranged from 0.12 to 0.27%, and pH-values from 6.22 to 6.70. Considering the agronomic, physical and chemical traits of the raw material, the sensory attributes of the final product – sauerkraut, and also producer and consumer requirements, besides the leading domestic variety ‘ Varaždinski’ , ‘ Field winner’ and ‘ Krautman’ were selected for the main pickling season, ‘ Metis’ and ‘ Ultor’ for early pickling, and ‘ Arena’ and ‘ Atria’ for late pickling.
Kakvocu svježih plodova rajcice, osobito sadržaj minerala moguce je poboljsati povecanjem EC-vrijednosti, odnosno koncentracije NaCl-a u hranivoj otopini bez znacajnijeg smanjenja prinosa. Istraživanje je provedeno tijekom 2004. i 2005. godine na sorti Belle, u hidroponima na plocama kamene vune s ciljem utvrđivanja utjecaja povecane koncentracije NaCl-a u hranivoj otopini na prinos rajcice i sadržaj biogenih elemenata u plodu.
Nectarine is a climacteric fruit which rapidly deteriorate at room temperature, and is susceptible to infection of pathogenic fungi. Since the application of fungicides on fruits after harvest is prohibited, heat treatments can be an alternative to prevent loss of market value. The effect of the heat treatments (hot air treatment and hot water dips) on fruit quality of nectarine (Prunus persica var. nectarina cv. 'Venus') after four weeks of storage at 0 oC was studied in this research. Hot air treatment included heating rate 24 oC/hour with a final temperature of 45 oC near stone. In following treatments, fruits were dipped in water heated to 48 oC (6 minutes) and 52 oC (2 minutes). The indicators of quality (weight loss, soluble solids, total acidity, pH and EC) were determined and the intensity of pathogen occurrence was established. Monilinia sp. was the most frequent pathogen whose occurrence was noticed in all treatments except control. Hot air treatment had the highest percentage of decayed fruits, while control and warm water heated to 48 oC had the lowest. Also, at this treatment significantly the highest fruit hardness is determined. In order to reduce the deterioration of fruits after harvest, hot water treatment could be a good alternative to chemical treatment.