Kosovo and Metohija, Serbia
Kosovo and Metohija, Serbia

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Jelic M.,Kopaonicka bb | Dugalic G.,Cara Dusana | Milivojevic J.,Small Grains Research Center | Djekic V.,Small Grains Research Center
Romanian Agricultural Research | Year: 2012

The uplands and highlands in Western Serbia are the most important oat production regions in Serbia. An experiment was conducted on a Luvisol soil in the Mt. Radočelo region (southwestern Serbia) in order to evaluate the effect of soil ameliorative operations (liming and humification) and fertilization on grain yield, test weight, 1000-grain weight and grain protein content in oat. The combined use of NPK fertilizers (120 kg N ha-1, 80 kg P2O5 ha-1, 80 kg K2O ha-1), lime (5 t ha-1) and manure (30 t ha-1) provided an optimum supply of major nutrients, resulting in maximum grain yield (5.443 t ha-1). The combined use of NPK, lime and manure induced a significant increase in test weight and protein content, and a moderate increase in 1000-grain weight. NPK fertilization increased grain yield and test weight, but showed no effect on 1000-grain weight and grain protein content. Nitrogen application resulted in a significant but lower increase in grain yield and quality, which was not likely to provide a significant economic benefit. The combined use of chemical ameliorative operations (liming and humification) and fertilization, especially with adequate rates of nitrogen and phosphorus, facilitate the optimization of the yield and quality of grain having a high market value.

Nikolic O.,EDUCONS University | Jelic M.,Kopaonicka bb | Balalic I.,Serbian Institute of Field and Vegetable Crops | Kraljevic-Balalic M.,University of Novi Sad
Bulgarian Journal of Agricultural Science | Year: 2013

Variability and components of variance for some dry matter status indicators (grain yield, biological yield and grain harvest index) have been studied in 30 winter wheat varieties from different selection centers (Morava, Lepenica, Studenica, Takovcanka, Toplica, Srbijanka, KG 100, Lazarica, Bujna, Matica, Vizija, Pobeda, Rana 5, Evropa 90, Renesansa, Tiha, Mina, Prima, Kremna, Rusija, Pesma, KG - 200/31, KG - 253/4 - 1, KG - 115/4, KG - 165/2, KG - 56/1, KG - 100/97, Perla, KG - 224/98 and KG - 10). The experiment was performed in randomized block design in five replications on the experimental field of Small Grains Research Centre, Kragujevac in three years. Average estimated values for grain yield, biological yield and grain harvest index differed high significantly among years and among varieties. The highest average value for grain yield had KG 10 variety (792.94g m-2) and the lowest value was found in KG 200/31 (303.88g m-2). During investigated period the highest average value for biological yield was determined in KG 10 (1907.62 g m-2), and the lowest value in Pesma (701.55). The grain harvest index varied from 39% (Lepenica, KG 200/31) to 46% (Renesansa, Tiha, KG 100/97). The lowest variability for grain yield was established in Rana 5 variety and the highest in Takovcanka (V = 9.60%; 27.71%, respectively). Coefficient of variation for biological yield varied from 4.02% (Matica) to 28.85% (Evropa 90). The lowest variability for grain harvest index was established in Evropa 90 and the highest in Pesma (V = 5.46%; 23.49%, respectively). Phenotypic analysis of variance indicated that genetic factors had higher impact on the expression of GY and BY than ecological factors. Higher share of ecological variance was registered at variability of GHI.

Aksic M.,Kopaonicka bb | Gudzic S.,Kopaonicka bb | Deletic N.,Kopaonicka bb | Gudzic N.,Kopaonicka bb | And 2 more authors.
Bulgarian Journal of Agricultural Science | Year: 2014

This study has been carried out through field trials with irrigation in the river valley of Southern Morava, near Nis, at the alluvium soil type, in the period 2008-2009. The experimental field consisted of three treatments with irrigation (soil matric potential of 20, 30 and 40 kPa), as well as unirrigated control. Irrigation schedule was determined by tensiometers based on the observed soil matric potential values. The highest potato tuber yield (48.30 t ha-1) was observed at the variant where soil matric potential of 30 kPa was kept. Potato tuber yield was the highest when water consumption for evapotranspiration amounted from 491.3 to 498.6 mm, while at higher or lower values of water consumption for ET tuber yield dropped. Water use efficiency of potato during the studied period ranged from 81.23 to 98.21 kg ha-1 mm-1. The data concerning tuber yield, evapotranspiration and WUE of potato point to the fact that, in order to reach high potato tuber yield and quality, one ought to keep soil matric potential at levels around 30 kPa for the conditions of south Serbia. © 2014, National Centre for Agrarian Sciences. All rights reserved.

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