N. Tòth

University of Zagreb

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Božidar Benko

University of Zagreb

Sanja Fabek

University of Zagreb

IŽ

Ivanka Žutić

University of Zagreb

Sanja Radman

University of Zagreb

Josip Borošić

University of Zagreb

B. Novák

North Dakota State University

LČ

Lepomir Čoga

University of Zagreb

Sanja Fabek Uher

University of Zagreb

Nevena Opačić

University of Zagreb

M. Pospíšil

University of Zagreb

Cooperative Institutions

University of Zagreb

University of Osijek

Magyar Agrár- és Élettudományi Egyetem

University of Guelph

United States Department of Agriculture

University of Novi Sad

Agricultural Institute Osijek

Rudjer Boskovic Institute

College of Agriculture at Križevci

International Plant Nutrition Institute

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TOMATO YIELD DEPENDENT ON SUBSTRATE TYPE AND VOLUME

Acta Horticulturae (2008)

Božidar Benko J. BoroÅ¡iÄB. Novák N. Tòth I. ¿utić

Reduction of substrate volume per plant by 1/3 without considerable yield decrease, would result in financial saving. Three substrata were used. rockwool, coconut fibres and expanded clay. The highest yield was obtained on rockwool, which is recommended as growing substrate.

10.17660/actahortic.2008.779.57

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EFFECTS OF MYCORRHIZAL FUNGI AND COLORED MULCH IN SWEET POTATO PRODUCTION

Acta Horticulturae (2007)

B. Novák Ivanka Žutić N. Tòth

In Croatia a three years preliminary research has already been conducted to explore the possibilities of sweet potato (Ipomoea batatas) cultivation and introduction into our growing areas. Positive effects on the yield were expected from the endomycorrhiza application according to the new growing technologies close to organic-biological production, as well as from mulching with differently colored polyethylene (PE) films. Arbuscular mycorrhizal (AM) fungus Glomus mossae was used as inoculants. A significant positive effect of mycorrhiza on the yield of sweet potato roots, as well as on the average root mass, however not on the number of roots per plant, was recorded. PE mulching had a significant effect on the yield and average root mass, as well. Interaction AM × PE film provided the significantly highest yield of thick toots per plant.

Colored

Mycorrhizal Fungi

10.17660/actahortic.2007.729.39

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Preparative-Scale Chromatography of Ecdysteroids: A Class of Biologically Active Steroids

Journal of Chromatographic Science (2008)

N. Tòth Mária Báthori

A simple separation procedure is developed for the isolation of the main phytoecdysteroid 20-hydroxyecdysone from the herb Silene viridiflora. The purification in four steps uses only a simple preparative-scale separation technique (i.e., liquid-liquid extraction, precipitation, solid-phase extraction on octadecyl silica, and crystallization). This procedure is extended using classical normal-phase liquid column chromatography, rotation planar chromatography, and preparative high-performance liquid chromatography for the isolation of the minor ecdysteroids: integristerone A, 26-hydroxypolypodine B, 2-deoxy-20,26-dihydroxyecdysone, and polypodine B. 2-Deoxy-20,26-dihydroxyecdysone is isolated from this species for the first time. The isolation of these ecdysteroids in adequate amounts makes them readily available for insect physiology experiments and for structure-activity relationship studies. The preparative-scale separation work also results in a minor, as yet unknown ecdysteroid.

Ecdysteroid

10.1093/chromsci/46.2.111

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The effect of mulch on morphological and agronomic traits of kohlrabi cultivars

Acta Horticulturae (2016)

Ivanka Žutić Sanja Fabek Božidar Benko Sanja Radman N. Tòth

Considering its short vegetation period, kohlrabi is a vegetable species suitable as an intercrop in crop rotation. Application of mulch in kohlrabi production can provide a favourable microenvironment for development of plants. Research with the aim to determine the effect of mulch, compared to the bare soil, on morphological and agronomic traits of newer kohlrabi cultivars was set up during spring growing period. Five kohlrabi cultivars ('Timpano', 'Olivia', 'Opimes', 'Opus', 'Octave') and three mulches (bare soil, black and white PE-film) were tested in two factorial experiment set up according to split-plot method. In the single harvest, cultivar 'Timpano' grown on black PE-film had the highest share of marketable plants (100%) while the share of unmarketable plants varied from 3% ('Olivia') to 39% ('Opimes'). The highest diameter of swollen stems had cultivar 'Timpano' both on white and black PE-film (80 and 82 mm). Mass of swollen stem varied from 321 ('Octave') to 379 g ('Timpano'). Marketable yield was determined in range from 2.68 (uncovered soil) to 3.84 kg m-2 (black PE-film). Depending on the combination of cultivar and mulch, cultivar 'Timpano' on black PE-film obtained the highest yield of swollen stem (4.85 kg m-2) while the lowest yield was recorded at cultivar 'Opimes' grown on uncovered soil (1.91 kg m-2). Cultivars 'Timpano' and 'Olivia' grown on black PE-film could be recommended for kohlrabi production in spring growing period.

10.17660/actahortic.2016.1142.8

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Macroelement composition of nettle in hydroponic production

Acta Horticulturae (2023)

M. Petek Sanja Radman Nevena Opačić Sandra Voća Lepomir Čoga

10.17660/actahortic.2023.1375.38

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The growth dynamics of garlic ecotypes in climatic conditions of northwestern Croatia.

Božidar Benko Sanja Fabek N. Tòth Sanja Radman Ivanka Žutić

Ecotype

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The dermatological aspects of the use of pesticides in greenhouses.

R. Balog A. Strigens K. Gombosi N. Tòth Z. Adamis

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First record of Epitrix hirtipennis in Hungary (Coleoptera: Chrysomelidae)

Folia Entomologica Hungarica (2022)

Márk Lukátsi David P. Horvath N. Tòth

Epitrix hirtipennis (Melsheimer, 1847) (Coleoptera: Chrysomelidae: Galerucinae: Alticini), a leaf beetle native to North America, is recorded for the first time from Hungary. Several specimens were found on tobacco (Nicotiana tabacum L.) plantations in the eastern and central parts of the country. Its life cycle and importance as a tobacco pest are briefly discussed.

Leaf beetle

10.17112/foliaenthung.2022.83.45

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YIELD COMPONENTS AND GLUCOSINOLATE CONTENTS OF BROCCOLI CULTIVARS IN SUMMER-AUTUMN GROWING CYCLE

Acta Horticulturae (2014)

N. Tòth Sanja Fabek Božidar Benko Mirjana Herak Ćustić Ivana Radojčić Redovniković

In recent decades, interest for functional food has been increased. Plant derived food is important source of various bioactive compounds. The biologically active components in Brassica vegetables are the breakdown products of glucosinolates which have anticarcinogenic properties. Broccoli is included as a highly nutritious vegetable due to its mineral and vitamin content, fibres and bioactive compounds which depend on genetic, abiotic and agronomic factors. As numerous broccoli hybrid cultivars are available in Croatia, research with aim to select promising hybrid broccoli cultivars with appropriate agronomic and chemical traits was carried out during summer-autumn growing period of 2007. The field trial involving 13 hybrid broccoli cultivars was laid out according to four- replication block design. During harvest period basic morphometric values of top inflorescence were determined. Cultivar 'Montop' had the highest mass, diameter and yield of top inflorescence (506 g, 15.5 cm and 1.5 kg m-2). 'Green Magic' and 'Lucky' belong to the same range with slightly lower values of the mentioned parameters (457 g, 15.4 cm, 1.5 kg m-2 and 447 g, 14.1 cm, 1.5 kg m- 2, respectively). In all analyzed cultivars prevailing glucosinolate were glucoraphanin and glucobrassicin. There are significant differences in glucosinolate concentrations among cultivars. 'Fiesta' had the highest glucoraphanin level, 3.52 μmol g-1 dry weight (dw). This was followed by 'Agassi' and 'Marathon', which also achieved high glucoraphanin concentrations (2.85 and 2.80 μmol g-1 dw). 'General' obtained the highest glucobrassicin concentration (9.5 μmol g-1 dw), significantly higher than the other cultivars. 'Marathon' reached the highest total glucosinolate concentration (15.45 μmol g-1 dw). Neither cultivar can stand out with the highest values of agronomic parameters and bioactive components at the same time. The results point out 'Marathon' as the cultivar with a considerable content of glucoraphanin, glucobrassicin and total glucosinolates (2.58, 7.32 and 15.45 μmol g-1 dw, respectively), and with satiable marketable top inflorescence yield (1.06 kg m-2).

10.17660/actahortic.2014.1040.45

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Yield and magnesium, sodium and chlorine content in tomato fruit under influence of different NaCl concentration in nutrient solution.

45. hrvatski i 5. Međunarodni simpozij agronoma, 15-19 veljače 2010, Opatija, Hrvatska. Zbornik Radova. (2010)

Renata Erhatić N. Tòth Josip Borošić M. H. C ́ustic ́Božidar Benko

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