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'Malvazija istarska' (Vitis vinifera L.) jedna je od najznačajnijih bijelih sorata u Hrvatskoj. Njezina kvaliteta prepoznata je kako u Hrvatskoj, tako i u cijelom svijetu. Stoga se domaći proizvođači sve češće odlučuju za proizvodnju vina i pjenušaca iz ove sorte. Mošt za proizvodnju baznoga vina za pjenušce po svome sastavu trebao bi zadovoljavati svojstva kao što su niža pH vrijednost i sadržaj šećera, te viši sadržaj ukupne kiselosti s većim udjelom vinske kiseline, naspram jabučne. S obzirom da se 'Malvazija istarska' uzgaja pretežito u Istri, gdje je klima mediteranska, a najzastupljenije tlo crvenica teško je zadovoljiti sva navedena svojstva, posebice u suhim i vrućim godinama. Stoga, cilj ovog istraživanja bio je utvrditi mogućnost pozitivnog djelovanja folijarne gnojidbe na navedena svojstva. Pokus je postavljen na sorti Malvazija istarska na podlozi SO4 2013. s četiri gnojidbena tretmana (T1- NPK, T2 - NPK + Agromag 6L (6% MgO), T3 - NPK + Agromag 6L + Fosforo 30L (30% P2O5) i T4 - NPK + Agromag 6L + Fosforo 30L + Bio Prot) u tri ponavljanja po slučajnom bloknom rasporedu (RCBD). Sveukupno određena pH vrijednost u moštu kretala se od 3,02 do 3,29, ukupna kiselost u moštu od 7,80 do 9,03 g/L, a sadržaj šećera od 76,00 – 81,00 °Oe. Najveća utvrđena koncentracija vinska kiselina bila je 4,49 g/l u tretmanu T3, koji je imao i najnižu utvrđenu koncentraciju jabučne kiseline 1,40 g/L. Značajan pozitivan utjecaj na sva svojstva imao je tretman T4., Istrian Malvasia' (Vitis vinifera L.) is one of the most important white varieties in Croatia. Its quality is recognized in Croatia as well as in the whole world. Therefore, producers are increasingly choosing to produce wine and sparkling wine from this variety. The must of base wine for sparkling wine in its composition should satisfy characteristics such as lower pH and sugar content and higher total acidity with higher tartaric acid than malic acid content. Due to the fact that Istrian Malvasia is grown mainly in Istria, where the climate is Mediterranean, and the most widespread soil is red soil, it is difficult to satisfy all the above characteristics, especially in dry and hot years. Therefore, the aim of this study was to determine the possibility of a positive effect of foliar fertilization on these properties. The present reserch was set on Istrian Malvasia variety on rootstock SO4 in 2013 with four fertilization treatments (T1 - NPK, T2 - NPK + Agromag 6L (6% MgO), T3 - NPK + Agromag 6L + Phosphorus 30L (30% P2O5) and T4 - NPK + Agromag 6L + Phosphorus 30L + Bio PROT) in three replicates per randomized complete block design (RCBD). Overall, must pH values varied from 3.02 to 3.29, total acidity in the must ranged from 7.80 to 9.03 g/L, while the sugar content from 76.00 to 81.00 ° Oe. The highest determined concentration of tartaric acid was 4.49 g / l in the T3 treatment, which also had the lowest determined concentration of malic acid 1.40 g / L. Treatment T4 had a significant positive effect on all properties.

Analiza biljnog materijala osnova je utvrđivanja statusa hraniva te planiranja kontrolirane ishrane vinove loze. Cilj ovog rada bio je utvrditi status Fe, Zn i Mn u listu cv. Malvazije istarske, kao izrazito značajnih mikroelemenata, kako za rast i razvoj same biljke, tako i za kvalitetu vina. Istraživanja su provedena u četiri vinograda podignuta na četiri tipa tla (terroira), podtipa vitisola: crvenici, smeđem tlu na laporu te na dvije rendzine na laporu s različitom količinom CaO. Za utvrđivanje statusa Fe, Zn i Mn uzeti su cijeli listovi (peteljka+plojka) dvaput kroz vegetaciju, u fenofazi cvatnje i šare tijekom 2013. i 2014. godine. Vrijednosti Fe u listu u fenofazi cvatnje kretale su se od 70 do 89 mg kg-1, a u šari 71 – 101 mg kg-1. Status Zn kretao se u rasponu 20 – 33 mg kg-1 u cvatnji te 17 – 42 mg kg-1 u šari. Vrijednosti Mn u cvatnji iznosile su 56 – 349 mg kg-1, a u šari 88 - 565 mg kg-1. Međutim, usporedivši dobivene vrijednosti s referentnim, sve vrijednosti Fe i Zn bile su na donjoj granici optimalnog, dok je opskrba Mn bila dostatna. Dobivene različite vrijednosti na pojedinoj lokaciji upućuju na potrebu prilagodbe i dizajniranja gnojidbe za svaku lokaciju., Analysis of plant material is the basis for determining nutrient status and planning controlled grapevine nutrition. The aim of this study was to determine the status of Fe, Zn and Mn in cv. Istrian Malvasia leaf as important microelements for both the growth and development of the plant, but also for wine quality. The experiment was set up in four vineyards (terroirs) on four soil types, subtypes vitisols: red soil, brown soil on marl, and the two rendzinas on marl with different amounts of CaO. To determine the status of Fe, Zn and Mn, whole leaves (petiole+blade) were taken twice through the vegetation, in the stage of bloom and veraison during 2013 and 2014. Determined Fe values ranged from 70 to 89 mg kg-1 in bloom stage, while from 71 to 101 mg kg-1 in veraison. Zn ranged from 20 to 33 mg kg-1 in bloom, and from 17 to 42 mg kg-1 in veraison. Determined Mn ranged in bloom from 56 to 349 mg kg-1, while in veraison from 88 to 565 mg kg- 1. However, in comparison to reference values, Fe and Zn values were within minimal for grapevine needs, while Mn values were sufficient. Different values suggest the need of a personally designed fertilization for every location.

Mineralni sastav povrća općenito predstavlja važan izvor minerala koji su uključeni u razne osnovne metaboličke procese u ljudskom tijelu. Ipak prilikom uzgoja povrća na alkalnim, karbonatnim tlima deficijencije P, Fe, Zn, Mn česta su pojava, zbog formiranja teško topivih spojeva i slabije dostupnosti navedenih minerala biljkama. S toga je cilj našeg istraživanja bio utvrditi utjecaj različitih gnojidbi na mineralni sastav i nutritivnu vrijednost radiča kao visoko vrijedne namirnice. Rezultati su pokazali da je primjena organskog gnojiva (s huminskom i fulvičnom kiselinom i dodatkom makro i mikoelementa) putem tla signifikantno povećala koncentraciju P, K i Mg u lišću radiča. Također, uočljiv je i relativni porast količine Fe pri primjeni navedenog organskog gnojiva putem tla u odnosu na ostale gnojidbene tretmane., Vegetable mineral content represents an important source of minerals that are involved in basic metabolic processes in human body. Nevertheless, growing vegetable on alkaline, calcareous soils may result with P, Zn, Mn and Fe plant deficiency since these elements are firmly bound in precipitates of low solubility and consequently their availability to plants is markedly decreased. Therefore, the aim of our experiment was to determine influence of different fertilization treatments on mineral and nutritional value of radicchio as valuable food. The results showed that soil application of organic fertilizer (with humic and fulvic acid + macro and microelements) significantly increased P, K and Mg radicchio leaf concentration. Furthermore, in comparison to the other treatments, relative increase of iron content within organic fertilizer soil application is noticeable.

Maslina se većinom uzgaja u manje pogodnim agroekološkim uvjetima, karakteriziranim između ostalog slabijom dostupnošću biljnih hraniva. Zbog navedenog, cilj ovog rada bio je utvrditi utjecaj primjene mješavine modificiranih sintetskih zeolita tipa A (ZA), u kojima su originalni Na+ioni zamijenjeni kationima Zn2+, Mn2+ i Fe2+ (Fe3+), i endomikoriznih gljiva (AMF) na mineralni sastav lista masline sorte Leccino uzgajane na alkalnom, karbonatnom tlu. Rezultati su pokazali pozitivno djelovanje Mn-ZA na količinu Mn u suhoj tvari lista masline, dok učinak primjene ostalih modificiranih zeolita (Zn-ZA i Fe-ZA) kao i arbuskularnih mikoriznih gljiva na mineralni sastav lista masline nije zabilježen., Olive growing is mainly associated with poor agroecologycal conditions, characterized mostly with lower nutrient availability. Thus, the objective of this experiment was to determine the influence of synthetic zeolite A mixture (ZA), in which the original Na+ ions were exchanged with Zn2+, Mn2+ and Fe2+ (Fe3+) ions from solutions, and endomycorrhizal fungi (AMF) on olive leaf mineral content of Leccino cultivar grown on alkaline, calcareous soil. Results have shown that zeolite fertilization significantly increased Mn content in olive leaf, while other modified zeolites application (Zn-ZA i Fe-ZA) as well as arbucular mycorrhize fungi application had no influence on olive leaf mineral content.

Maslinarstvo Republike Hrvatske u snažnom je usponu. Razlog su tome prirodne blagodati koje omogućuju proizvodnju ekstra djevičanskih maslinovih ulja visoke kakvoće. Površine pod kulturom masline rastu iz godine u godinu. Kako se većina plodova masline prerađuju u maslinovo ulje, porastom količine prerađenih plodova raste i količina dobivenih nusprodukata tijekom procesa ekstrakcije maslinovog ulja. Nusprodukti su u prvom redu komina i vegetabilna voda. U Hrvatskoj se godišnje prema gruboj procjeni proizvede oko 55,250,000 litara vegetabilne vode. U radu su na osnovi citata iz znanstvenih i stručnih radova opisane glavne tehnologije zbrinjavanja vegetabilne vode: biološke, kemijske, fizikalne, mikrobiološke, biotehnološke metode te metoda ekstrakcije korisnih spojeva iz vegetabilne vode i njeno direktno izlijevanje na poljoprivredne površine. Od opisanih metoda za uvjete u Hrvatskoj preporučene su: anaerobna razgradnja, neutralizacija pomoću kalcija, izlijevanje na poljoprivredne površine i ekstrakcija korisnih tvari., Olive growing is on the constant rise in the Republic of Croatia. Natural benedictions which enable the production of extra virgin olive oils of high quality are the reason for this. Surfaces under olive culture grow from year to year. As most of olive fruits are processed into olive oil, along with the increase in quantity of processed fruits grows the quantity of obtained by- products during the process of extraction of olive oil. Primary by- products are olive cake and vegetative water. It is roughly estimated that the annual production of vegetative water in Croatia is about 55.235.000 l. Based on quotations from scientific and professional papers, this paper describes the major technologies of vegetative water treatment. They are: biological, chemical, physical, microbiological, biotechnological methods, and the method of extraction of useful compounds from vegetative water and its direct pouring out on agricultural surfaces. Out of described methods, the following are recommended for Croatian conditions: anaerobic decomposition, neutralization by calcium, pouring out on agricultural surfaces and extraction of useful compounds.