Due to the dominant role in world nutrition, wheat was given the character of a strategic product. Its participation in human nutrition is gradually decreasing in developed countries where changes in the nutrition structure have prioritized animal proteins. However, in underdeveloped countries where the phenomenon of hunger is present in a severe form, the main tendency is to provide a sufficient amount of it for the needs of the population's diet. The paper examines the influence of genotype/variety and site on winter wheat yield components: length of ears, number of spikelets in the spike, number of grains in the spike and mass of grains per spike, during 2016/17. The tested factors exhibited a different impact and a strong intensity of influence on the parameters covered by the research. The cultivation site had a statistically significant influence on the length of the ear (spike), the number of spikelets in the spike and the number of grains in the spike. Within the wheat yield components, the factor of the genotype / variety had higher influence on the length of the spike. The genotype G2 had a longer spike (8.62 cm), the number of spikelets in the spike (18.30), the number of grains in the spike (42.58), and the grain weight per spike (1.57).

No abstract

The importance of sugar beet is great because it gives root yield of about 50 t ha-1 and 30-40 t of fresh leaves and heads of beet that is used for feeding cattle. In the Republic of Serbia are favorable agro-ecological and soil conditions for the production of sugar beet. In the structure of total arable land of the Republic of Serbia, sugar beet accounts for about 2% where 94% of it is in Vojvodina, which has the most favorable climate and soil conditions, tradition and proximity of capacities for root production and processing. In addition to its adaptability to climatic conditions, sugar beet reacting quickly to changes in meteorological factors which greatly affect root yield and sugar content. In the three-year trials it was examined morphological characteristics and the amount of a-amino N in five genotype of sugar beet. According to the survey results, the largest number of leaves at the genotypes at technological maturity had the genotype Otis (35.33) while the smallest had had genotype Severina (15:53). Genotype Otis, as a whole, had the highest leaf area (X =10193.13 and Xmax = 11483.79), and the lowest had genotype Severina (X = 4242.33; Xmin = 3982.44). The lowest average value of the amount of α-amino N indicators were found for Chiara and Laetitia (X = 2.23). The observed traits were largely depended on the genotypes and years. Genetic variation is necessary for successful breeding.

In this paper, authors started from the hypothesis that innovations contribute to creativity and that children become more aware of in what way they can contribute to the development of rural areas. With children, play is important, and games that strengthen the imagination and encourage children to think for themselves are one of the best ways to encourage making future, strategic decisions. The challenge was to test the game “Tesla” on older school age children from 12 to 14 years old from rural areas. 138 children from five rural schools on Fruška Gora were examined. The results showed that children from rural areas, with the help of smart devices, played the game at the same level as children from any world metropolis. What’s more, through the game, the children showed awareness of the importance of the village, staying in the village and what is needed for the village to “live”.