B. Novák

North Dakota State University

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N. Tòth

University of Zagreb

Božidar Benko

University of Zagreb

IŽ

Ivanka Žutić

University of Zagreb

Josip Borošić

University of Zagreb

Sanja Fabek

University of Zagreb

Nadica Dobričević

University of Zagreb

I¿

I. ¿utić

AŠ

Ana-Marija Špicnagel

J. Boro¿ić

Milan Oplanić

Institute of Agriculture and Tourism

Cooperative Institutions

University of Zagreb

Toxalim Research Centre in Food Toxicology

Université Toulouse III - Paul Sabatier

École Nationale Vétérinaire de Toulouse

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement

Université de Toulouse

University of Ljubljana

Institute of Agriculture and Tourism

Crop Research Institute

Institut National de la Recherche Agronomique

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AGRONOMIC AND DIETARY VALUE OF PAK CHOY (BRASSICA RAPA SSP. CHINENSIS) IN DIFFERENT GROWING PERIODS

Acta Horticulturae (2007)

Ivanka Žutić J. BoroÅ¡iÄN. Tòth B. Novák Nadica Dobričević

Pak choy, in Croatia a less known oriental leafy vegetable species, can be found on the Croatian market in the winter period as an import from other Mediterranean countries. The purpose of the investigation was to obtain information about its agronomic traits and dietary value in different growing periods (two spring and a summer-autumn in the open, and an overwinter period in an unheated high tunnel) from 1998 to 2000. Open field trials were laid out according to the split-plot scheme in five replications, with plant density as the main factor (16.7 and 22.2 plants/m2) and harvest dynamics as the sub-factor [(30, 37 and 44 days after planting (DAP)]. The mono factorial overwinter trial was set up so as to involve supplementary direct covering with polypropylene material (PP) and no covering, at a plant density of 16.7 plants/m2. Undesirable bolting was recorded in spring growing periods (0%, 0 to 9% and 5 to 40% at harvest 30, 37 and 44 DAP, respectively) and in the winter period (with PP covering 2 to 10%, without covering 6 to 20%). Contents of leaf petioles and blades in the rosette mass were about equal in the harvest 30 DAP in both spring periods (ca 45%), and it increased as the vegetation progressed to the advantage of petioles (to 64% at 44 DAP in the summer-autumn period, to 60 % in the overwinter crop). The highest contents of total dietary fibres (0.56 to 0.79 g/100 g fresh matter) and biogenic elements (N, P, K, Ca, Mg, Fe, Mn, Zn and Cu), as well as significantly lower contents of nitrates (1104 to 1187 mg/kg fresh matter) were recorded in the spring growing periods. Closer spacing and supplementary direct crop PP covering had a positive effect on yields (P≤ 0.01) and mainly no significant effect on the other traits studied.

Brassica rapa

Value (mathematics)

10.17660/actahortic.2007.729.38

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AGRONOMIC TRAITS OF CABBAGE CULTIVARS FOR SAUERKRAUT PRODUCTION

Acta Horticulturae (2007)

Ivanka Žutić Josip Borošić Nadica Dobričević N. Tòth B. Novák

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.

10.17660/actahortic.2007.729.40

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YIELD COMPONENTS OF BROCCOLI CULTIVARS GROWN IN THE CONTINENTAL CLIMATE OF CROATIA

Acta Horticulturae (2007)

N. Tòth Josip Borošić Ivanka Žutić B. Novák Božidar Benko

The objective of this trial is to select promissing hybrid broccoli cultivars, suitable to be grown in the agro-ecological conditions of northwestern croatia.

10.17660/actahortic.2007.729.41

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[Effect of silage juices on the microbial processes in soil (author's transl)].

PubMed (1974)

Soňa Bönischová B. Novák

Silage

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AUTUMN LETTUCE PRODUCTION ON ROCKWOOL SLABS

Acta Horticulturae (2009)

Božidar Benko J. Boro¿ić B. Novák N. Tòth Sanja Fabek

A trial was carried out to determine the possibility of re-using of rockwool slabs after tomato production. Since a short cycle was required, we considered lettuce as the second crop. In trial, seedlings of four iceberg lettuce cultivars were planted on rockwool slabs in September. Plants were fertigated with a standard nutrient solution and positioned at 0.25 m on the slab, with slabs placed 1.2 m apart. Every 10 days during the lettuce growing period vegetative growth and dry matter production were monitored. At harvest (47 Days After Transplanting, DAT), total head weight, diameter, height and marketable yield were determined. A positive correlation was observed between number of leaves and head weight (from 0.6583 to 0.8397), whereas correlations between head weight and dry matter content (from -0.574 to -0.9622) were negative. The highest total head weight (241 g) and marketable weight (222 g) was achieved by cv. Triathlon. Marketable yield of the other cultivars was reduced by 13.5 to 32.4 %. Diameter of marketable head varied from 18.9 to 23.5 cm depending upon cultivar. Cultivar Triathlon had the highest heads (20.4 cm) while other cultivars had statistically lower heads (from 17.2 to 18.2 cm). The experiment also show the possibility to grow lettuce without heating during autumn season in continental part of Croatia. Regardless to low yield achieved (from 495 to 733 g m-2) lettuce cultivation in unheated greenhouses showed to require a prolonged growing period.

10.17660/actahortic.2009.807.72

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QUALITY OF DIFFERENT CABBAGE CULTIVARS INTENDED FOR BIOLOGICAL FERMENTATION

Acta Horticulturae (2007)

Nadica Dobričević Josip Borošić Ivanka Žutić B. Novák N. Tòth

Fresh cabbage (Brassica oleracea convar. capitata L.) from the production area of Ogulin (111 km from Zagreb) is a good raw material for biological fermentation. The climatic and pedological characteristics of the area favor the production of late cabbage cultivars, cabbage fermentation and sauerkraut storage. Production of cabbage intended for fermentation was followed for two years. The following cultivars were represented in the first year: ‘ Admiral’ , ‘ Junior’ , ‘ Kilor’ , ‘ Krautman’ , ‘ Satelite’ and ‘ Varaždinski’ . The trial, laid out according to the randomized block scheme with four replications and the average plant density 4.16/m2, resulted in 57 to 98% of marketable heads. Marketable head mass ranged from 0.49 to 2.55 kg, the yield varying from 20.33 t/ha (‘ Admiral’ ) to 103.83 t/ha (‘ Krautman’ ). The following cultivars were represented in the second year: ‘ Azan’ , ‘ Donar’ , ‘ Junior’ , ‘ Kilor’ , ‘ Krautman’ , ‘ Satelite’ and ‘ Varaždinski’ . Plant density of 4.16 plants/m2 resulted in 65 to 94% of marketable heads with the average mass from 0.94 kg (‘ Donar’ ) to 1.71 kg (‘ Krautman’ ). Head hardness index (mass/volume) ranged from 0.88 to 1.20, while the yields were from 33.28 t/ha (‘ Varaždinski ‘ ) to 67.74 t/ha (‘ Krautman’ ). Fermentation of heads and shredded cabbage was monitored by chemical analyses of dry matter content, soluble dry matter (°Bx), % NaCl, pH, total acidity (% lactic acid) and vitamin C, as well as sensory characteristics of color, taste, odor and consistency. The results of chemical analyses and sensory characteristics point to appreciable advantages of cultivars ‘ Krautman’ and ‘ Varaždinski’ .

10.17660/actahortic.2007.729.70

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GROWTH AND YIELD OF TOMATO GROWN ON REUSED ROCKWOOL SLABS

Acta Horticulturae (2009)

Josip Borošić Božidar Benko B. Novák N. Tòth Ivanka Žutić

Rockwool is the most used substrate for soilless culture in Croatia. Multiple use would greatly contribute to the waste management of the rockwool slabs. The aim of the research was to determine the influence of rockwool slab age on tomato plant growth and marketable yield. In the trial reported, new, one and two year old slabs were used. Different age of rockwool slabs did not significantly affect plant height and leaf number. The harvest periods in 2005 and 2006 lasted 171 and 168 days respectively. For early yield, defined as yield during first 10 days of harvest, total yield and fruit weight were determined. In 2005 early yield achieved on new rockwool slabs (0.99 kg plant-1) was 10.4 % lower, and total yield (12.95 kg plant-1) 6.8 % higher than on one year old slabs. During 2006 the highest early yield (1.76 kg plant-1) obtained on two year old rockwool slabs was 6.4 % higher than on one year old slabs, and 10.1 % higher than on new slabs. The highest marketable yield (12.86 kg plant-1), significantly higher than the yield on two year old slabs (11.09 kg plant-1), was obtained on new rockwool slabs. Throughout the harvest period fruit weight varied from 183 to 186 g during 2005 and between 161 to 164 g in 2006. Because new and one year old slabs achieved statistically identical values of researched parameters, but lower values during the third year of use, biennial use of rockwool slabs could be recommended.

10.17660/actahortic.2009.819.24

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A ramp in nursery housing affects nursery pig behavior and speeds loading of market hogs

Applied Animal Science (2020)

B. Novák J. M. Young David Newman Anna K. Johnson Sarah Wagner

Pre school

10.15232/aas.2019-01974

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Citations (6)