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Due to its composition the oilseed rape is widely used in the production of oil, animal feed and biodisel production. Due to a wide range of rapeseed use, the aim of this paper was to determine the influence of genotype, production year and planting density on seed germination, seed moisture content, mass of 1000 seed, hectoliter mass, seed yield per plot, and oil and protein content in the seed. Tests were carried out on four rapeseed genotypes sown at a distance of 5 cm (80 plants/m2), 10 cm (40 plants/m2), 15 cm (27 plants/m2) and 20 cm (20 plants/m2) within the raw during 2007/2008 and 2008/2009 vegetation period. Seed germination, hectoliter mass and seed yield depended on production year, mass of 1000 seeds depended on genotype, plant density and production year, while the oil and protein content depended on genotype and production year.

An objective of this study was to evaluate and compare the behaviour of three domestic sunflower fruits (Bačvanin, NS H111 and Šumadinac hybrids) during compressive loading considering the seed moisture content. The fruits of NS H111 and Šumadinac, demonstrated low values of bio yield force ranging from 29.3 N to 45.2 N when fruits had low moisture content (between 3.7 and 5.9% w.b.). Opposite results occurred for Bačvanin hybrid (60.6 N) within the same fruit moisture content. For all hybrids, the machine head displacement (deformation) increased as the seed moisture content increased. This conclusion is especially valid for NS H111 hybrid. The linear model shows a decreasing trend of bio yield modulus of elasticity for three tested hybrids as the moisture content of seeds increased.

The results of some physical properties three domestic wheat cultivars are presented in this paper. Three axial dimensions of the seed length, width and thickness were measured only at equilibrium moisture content. The length of Simonida kernel is 5.2-5.7 mm, Dragana 5.1-6.0 mm and NS 40S is 5.0-5.9 mm. The other two dimensions are similar within the varieties: the width is 2.3-2.8 mm, 2.0-3.0 mm and 2.2-3.0 mm for Simonida, Dragana and NS 40S respectively. The thickness for Simonida seed is 1.9-2.4 mm, Dragana has 1.9-2.7 mm and NS 40S kernel dimension is 2.0-3.4 mm. Those surveying indicate that the shape of kernels is rather prolong elliptical then spheroid. This conclusion confirms the sphericity of the grains, so this value for Simonida cultivar is 0.57 as well as for Dragana, while NS 40S seed shpericity is 0.6. The bulk densities are 791.34 kg/m3, 788.51 kg/m3 and 731.77 kg/m3 for Simonida, Dragana and NS 40S. The porosity of Simonida kernels is 28.28%, for Dragana 31.46% and for NS 40S is 31.59%. The results of slow compressive test demonstrate that Simonida and Dragana are hard wheat. The highest value of mean rapture force of 244.4 N was observed for Simonida variety at the 13.6% of moisture content. Cultivar Dragana value of mean rapture force was 241.4 N at 13.3% of moisture content and cultivar NS 40S had mean rapture force of 106.8 N at 14.1% grain moisture content.

The paper presents laboratory research of basic physical properties of barley seed which determine parameters vital for seed handling in harvest, primary and final processing, as well as in sowing. The study was focused on the breakage force and deformation of barley seed. The test were conducted on two varieties of winter barley: Novosadski 525 and Nonius. The significant differences in seed properties, which are the subject of this research, pertain to the following: shape and dimensions, roundness, volume, single seed surface area, moisture, bulk density and self-density, 1000 seed mass, and dependence of compression strength on the force.

Newly developed soybean varieties differ from each other in morphological characteristics, requirements for growing conditions and technological quality of seed. The mentioned differences affect quality of seed and its viability. The aim of this paper was to determine seed quality of new soybean varieties differing in protein and oil content, and in maturity groups. Testing of seed quality was carried out on new soybean varieties developed in the Institute of field and vegetable crops in Novi Sad (NS Zenit, NS Virtus, Galina, Valjevka, Diva, NS Maximus, Sava, Balkan, Idila, Rubin, Trijumf and Vojvođanka) in the Laboratory of agricultural expert service in Novi Sad. The following seed quality traits were determined: seed moisture content, bulk density and germination of seed. Seed moisture content determined immediately after harvest ranged from 8.5% to 12.5%, and hectoliter weight from 65.5 kg/hl to 71.3 kg/hl. Statistically significant differences were found among studied varieties. The lowest values of germination were obtained in Sava (78%) and Vojvođanka (79%), and the highest in Rubin (96%) variety, while the seed germination determined by applied cold test was slightly lower. .