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The aim of this study was to examine the effects of soil type and forage crops on the content of manganese (Mn) in roughages, and forage quality regarding Mn content. The trial was carried out on chernozem and humogley under alfalfa and red clover. Samples for determination of Mn content in plant and total Mn content in soil were digested using the apparatus Milestone Ethos 1 and for Mn determination on ICP-OES Vista Pro-Axial Varian. Average total Mn content in soil of the tested sites was 473.1 mg/kg. Total Mn content in chernozem was higher than in humogley. Average Mn content in forage crops was 28.7 mg/kg. Dry matter Mn content was lower in crops grown on humogley. Mn content was significantly higher in red clover. Significant positive correlation was found between total Mn content in soil and Mn content in crops. Mn concentration in crops was below critical and toxic value., Cilj rada je da prikaže uticaj tipa zemljišta i krmnog useva na sadržaj mangana u kabastoj stočnoj hrani, kao i kvalitet krmiva sa aspekta obezbeđenosti manganom. Ispitivanja su izvedena na černozemu i humogleju, na kojima je zasnovana proizvodnja lucerke i crvene deteline. Za određivanje sadržaja Mn u biljkama, kao i ukupnog sadržaja u zemljištu primenjena je digestija uzoraka na aparatu Milestone Ethos 1 i determinacija na ICP-OES Vista Pro-Axial Varian. Prosečan ukupan sadržaj Mn u zemljištu iznosio je 473,1 mg/kg. Ukupan sadržaj Mn u černozmu je bio viši u odnosu na humoglej. Prosečna vrednost sadržaja Mn u ispitivanim biljkama iznosila je 28,74 mg/kg. Niži sadržaj Mn u suvoj materiji biljaka je konstatovan na humogleju. Crvena detelina je imala značajno veći sadržaj Mn. Konstatovana je značajna pozitivna korelaciona veza između ukupnog sadržaja Mn u zemljištu i njegovog sadržaja u biljkama. Koncentracija Mn u biljkama je ispod kritične i toksične vrednosti.

Urban gardening is an activity that has been rapidly increasing. The aim of this study was to point out the common mistakes in cultivation practices made by producers on small city areas. Total of 96 individual plots under vegetable crops were sampled (56 from garden plots of the city of Novi Sad, and 40 from field plots in the suburbs). There was no significant difference in the content of organic matter between these two groups of tested soils. The contents of readily available P2O5 and K2O were significantly higher in garden soil than in the field plots for production of vegetables. According to the content of pseudototal copper, 39% of samples belonged to the category of critical concentration and/or above MAC in the urban soil. Obtained results prove the pollution of small area gardens due to high anthropogenic effect of excessive use of mineral fertilizers and copper-based fungicides., Urbano baštovanstvo u gradskim zajednicama je aktivnost koja se intenzivno širi. Cilj ovog istraživanja bio je da ukaže na najčešće greške u proizvodnoj praksi u gradskim baštama i okućnicama malih površina. Uzorci zemljišta su prikupljeni sa ukupno 96 pojedinačnih parcela pod povrtarskim kulturama (56 iz gradskih bašta i okućnica na teritoriji grada Novog Sada i 40 iz njivske proizvodnje iz prigradskih naselja). Između dve grupe ispitivanih zemljišta nije bilo značajnih razlika u sadržaju organske materije. Sadržaj lakopristupačnog P2O5 i K2O bio je značajno viši u zemljištima gradskih bašta i okućnica nego u zemljištima pod njivskom proizvodnjom povrća. Prema sadržaju pseudoukupnog bakra, 39% uzoraka u urbanim zemljištima svrstano je u kategoriju kritične koncentracije i/ili iznad MDK. Dobijeni rezultati ukazuju na zagađenje gradskih bašta i okućnica koje je prouzrokovano jakim antropogenim uticajem usled intenzivne primene mineralnih đubriva i fungicida na bazi bakra.

Production of high-quality forage from alfalfa is influenced not only by the presence of nutrients, but also by the absence of harmful elements, such as heavy metals. The examination of the total heavy metals content (Ni, Cr, Pb and As) in gleyic chernozem soil of Srem loess terrace in Hrtkovci, under alfalfa (Medicago sativa L.) were carried out in 2011 in order to determine suitability for the production of safe forage. It total content of Pb, As and Crwas below the maximum permitted concentrations. The content of As, Cr and Ni was higher in the surface layer, unlike Pb, whose content was higher in the deeper layers of soil. A significant positive correlation was found between the total content of Ni, Cr and As. An increased concentration of Ni was found, which was above the maximum permitted concentration. It is necessary to further control its content and accessibility examination and extraction from plants, to prevent its entry into the food chain and provide safe food., Proizvodnja visokokvalitetne stočne hrane od lucerke uslovljena je ne samo sadržajem hranljivih materija, nego i odsustvom štetnih elemenata, kao što su teški metali. Ispitivanja ukupnog sadržaj teških metala (Ni, Cr, Pb i As) u zemljištu oglejeni černozem sremske lesne terase, na području mesta Hrtkovci, pod usevom lucerke (Medicago sativa L.) izvedena su tokom 2011. radi utvrđivanja pogodnosti za proizvodnju zdravstveno bezbedne stočne hrane. Ukupan sadržaj Pb, As i Cr u ispitivanim uzorcima je bio ispod maksimalno dozvoljene količine. Sadržaj arsena, hroma i nikla bio je veći u površinskom sloju zemljišta, za razliku od olova, čiji je sadržaj bio veći u dubljem sloju. Pozitivna korelaciona veza konstatovana je između ukupnog sadržaja nikla, hroma i arsena. Utvrđen je povećan sadržaj Ni, iznad maksimalno dozvoljene količine. Neophodna je dalja kontrola njegovog sadržaja, kao i ispitivanje pristupačnosti i ekstrakcije od strane biljaka, kako bi se sprečio njegov ulazak u lanac ishrane i obezbedila proizvodnja zdrave hrane.

This paper presents the results of a two-year trial of yield, protein and oil content NS soybean cultivars of 0 and I maturity group. Average yield for all tested cultivars was 3,657 kg ha-1. Significantly higher yield was recorded in 2010 as compared to the 2009. Soybean cultivars Sava and Valjevka had the highest yield per unit area as compared to other tested cultivars. The protein content of all soybean cultivars was 38.04% on average. The 2010 protein content was significantly higher than the 2009. Cultivar Proteinka had significantly higher two-year average protein content (39.29%) as compared to the tested cultivars. Average oil content for all tested cultivars was 20.55%. Cultivars Valjevka and Sava had the highest average oil content, 20.88% and 20.87% respectively. The 2009 oil content was significantly higher than the 2010. Cultivar Sava had the highest protein and oil yield (1,445 kg ha-1 and 789 kg ha-1 respectively) as compared to other tested cultivars. There were statistically significant differences in yields, and protein and oil content and yield depending on cultivars and testing year. Environmental factors influenced the correlation between yield and protein oil and content., U radu su prikazani dvogodišnji rezultati prinosa, sadržaja proteina i ulja NS sorti soje, 0 i I grupe zrenja. Prosečni prinosi, za sve testirane sorte soje, varirali su od 3.211 kg ha-1 (2009) do 4.104 kg ha-1 (2010). Statistički značajno viši prinosi zabeleženi su 2010. u odnosu na 2009. Sorte soje Sava i Valjevka imale su statistički značajno viši prinos po jedinici površine u odnosu na ostale testirane sorte. Sadržaj proteina za sve ispitivane sorte soje iznosio je u proseku 38,04%. Sadržaj proteina u 2010. bio je statistički značajno viši u odnosu na 2009. Sorta Proteinka imala je, u dvogodišnjem proseku, statistički značajno viši prosečan sadržaj proteina (39,29%) u odnosu na ostale testirane sorte. Prosečan sadržaj ulja, za sve testirane sorte soje, iznosio je 20,55%. Najviši sadržaj ulja ostvarile su u proseku sorte Valjevka (20,88%) i Sava (20,87%). Statistički značajno veći sadržaj ulja zabeležen je u 2009. u odnosu na 2010. Sorta Sava imala je viši prinos proteina (1.445 kg ha-1) i ulja (789 kg ha-1) u odnosu na ostale testirane sorte. Utvrđene su statistički značajne razlike u prinosima, sadržaju i prinosu proteina i ulja u zavisnosti od sorte i godine ispitivanja. Faktori spoljašnje sredine utiču na korelaciju između prinosa i sadržaja proteina i ulja.

A three-year experiment was conducted to study the effect of different doses of nitrogen fertilizer applied under previous crop and seed inoculation with a microbial preparation NS Nitragin on soybean yield and protein content in grain. The experiment was set up in four replications at Rimski Šančevi experiment field of Institute of Field and Vegetable Crops, Novi Sad. Presowing seed inoculation contributed to a statistically significant increase in yield and protein content in all three research years, while the highest nitrogen dose had a positive impact on soybean yield only in 2007 and on protein content in 2006 and 2007., U trogodišnjem ogledu proučavan je uticaj različitih doza azotnih đubriva primenjenih pod predusev i inokulacije semena mikrobiološkim preparatom NS-Nitragin na prinos i sadržaj proteina u zrnu soje. Ogled je postavljen u četiri ponavljanja, na parceli Instituta za ratarstvo i povrtarstvo, Novi Sad na Rimskim Šančevima. Inokulacija semena pre setve doprinela je statistički veoma značajnom povećanju prinosa i sadržaja proteina u sve tri godine istraživanja, dok su najveće doze azota imale pozitivan uticaj na prinos soje samo 2007. odnosno na sadržaj proteina 2006. i 2007.

Levels of heavy metals Cd, Cr, Ni and Pb obtained by analysis of inorganic and organic fertilizers available on the Serbian market are discussed in this paper. The first estimation of the heavy metal input in soils due to use of phosphate fertilizers is also given. The heavy metal contents of all analysed inorganic fertilizers were below the MAC according to the current Serbian regulations. Elevated concentrations of Ni were detected in two and a high Cr concentration in one sample of the substrates. The average (theoretical) heavy metal input in Serbian soils was calculated based on the application of 20 kg ha-1 P2O5 per year. The calculated heavy metal input was lower than European average and it is similar to the inputs recorded in Finland and Denmark., U radu su prikazani rezultati analize sadržaja teških metala Cd, Cr, Ni i Pb u uzorcima neorganskih i organskih đubriva koja se nalaze na tržištu u Srbiji, a data je i početna procena količine teških metala koja se unose u zemljište prilikom upotrebe fosfatnih đubriva. Sadržaj teških metala u svim analiziranim neorganskim đubrivima je ispod MDK po važećem Pravilniku, a u uzorcima supstrata, koji se svrstavaju u organska đubriva, izmerena je povišena koncetracija Ni (2 uzorka) i Cr (1 uzorak). Prosečan (teorijski) unos teških metala u zemljište u Srbiji pod pretpostavkom da se godišnje po hektaru primeni 20 kg P2O5 niži je od evropskog proseka i blizak je podacima za Finsku i Dansku.