In order to determine the effect of fertilization, environment, and their interactions on the yield and oats yield components. Five fertilization treatments (T1-control, T2-80 kg N ha-1, T3-120 kg N ha-1, 80 kg P2O5 ha-1 and 80 kg K2O ha-1, T4-N120P80K80 + 5 t ha-1 of lime and T5-N120P80K80 + 5 t ha-1 of lime + 30 t ha-1 of farmyard manure) were examined during three growing seasons in Kraljevo location in Western Serbia. Grain yield (GY), 1000 grain weight (TGW), hectolitre weight (HW), plant height (PH), panicle length (PL), number of grains per panicle (NGP) and protein content (PC) were analysed. The aim of the study was to determine the effect of organic and mineral fertilization and calcification on the yield and oats yield components. On average, for all fertilizer variants, during the three-year trial, the highest yield of oats 3802 kg ha-1 was obtained in the fertilizer variant with the combined application of NPK fertilizers, lime and manure. Positive highly significant correlation, during in the study trial were found between yields with PH, PL and NGP. Negative and highly significant dependencies were found between protein content with GY, PH and NGP. The results of these studies indicate the importance of rational introduction of adequate quantities of fertilization, calcification and humization in order to make oats as profitable as possible in the agro-ecological conditions in Pannonian Environments.

On a farm infectious diseases may occur by introducing infected animals, introduction of cattle in the incubation period, carcasses of animals that were not removed properly, vehicles, equipment, clothing and shoes of visitors or employees who have contact with other herds, more often contact with the herd, contact with other animals (horses, dogs, cats, wildlife, rodents, birds, insects), but also by contaminated objects, contaminated food, and improper management of manure when it comes to the creation of dust and scattering (Hristov, 2007). To prevent introduction of infection to the farm or farms in the environment, we use primary and secondary Biosafety measures. The most effective implementation of biosecurity measures on farms provides a development plan for that farm biosecurity. We have developed the biosecurity plan based on detailed observation and analysis of the relevance of indicators and on biosecurity which includes: 1. Making and submitting a written plan for achieving and maintaining biosecurity on farm production based on keeping proper records; 2. Isolation of he farm as a whole or individual segments of manufacturing and production operations; 3. Introduction of newly acquired animals in a herd; 4. Health of the herd; 5. Evaluations of the personnel and the equipment; 6. Traffic and movement control; 7. Attitude towards visitors; 8. Control of food and water; 9. Manure; 10. Disposal of carcasses of dead animals; 11. Relationship to other animals on the farm; 12. Population control of rodents and birds; 13. Sanitation (Stanković et al,, 2010).

Advantages or disadvantages of intercropping system can estimate through expression of components of yield on the base of values of productive organs (spike, pod). The aim of this work was study of variation of spike index in cereals species and pods index in pea of spring intercropping. For investigation included spring species of small grains: wheat, triticale, oat and spring legume pea. The investigation was carried out in field condition in experiment with randomised block design of 5m 2 plots, with 4 replications. Each species (cereals and pea) were sown sole and in intercrops wheat+pea, triticale+pea and oat+pea. At the maturity stage used 40

Raspberry production has a long tradition in the Republic of Serbia, and the raspberry is the most economically important berry crop. According to data for the period from 2006 to 2016, the Republic of Serbia was ranked fourth in the world in the production of this fruit crop. The paper presents an analysis of raspberry production in the Republic of Serbia using statistical data from the previous years, which were compared with 2016 data. For comparison and analysis, we used the data presented on the FAOSTAT statistical database website and the Statistical Office of the Republic of Serbia (RZS) website. The analysis of the available data for the period 2006-2016 shows that the total yield of raspberries in this period varied, as did yield in tonnes per hectare, which ranged from 5.3 to 6 tonnes, depending on year. A sudden decrease in total yield in 2012 and in all subsequent years until 2016 was also observed. This was caused by a sudden reduction in the area under raspberries.

The total area under cereals during 2018 remained at a long-term stable level of about 1.7 million hectares. Maize and wheat are the most important crops grown in the Republic of Serbia. In the structure of harvested areas under cereals, maize dominates (53%), followed by wheat (38%). The objective of this paper was to determine if there was a recognisable trend line for the production of these crops in the 2007-2018 period. The yield data (Area harvested (ha), Production (tonnes), Production (t/ha)) were collected from the Statistical Office of the Republic of Serbia. Calculations of relevant and valid trends using central tendency measures, dispersion measures, relative ratios and percentage growth were used for statistical data processing. During the observation period, the average annual growth in maize yield was 6.38%, while the average annual growth in wheat yield was slightly lower, 2.00%. However, it is not possible to create an appropriate trend line for any of the variables in order to predict a future time period, since the coefficient of determination is low.

The objective of this paper is to show and compare the production of maize and wheat in Serbia from 2007 to 2016. This paper presents an analysis of the production of maize and wheat in the Republic of Serbia, by applying the method of comparison and using the data on previous years and comparing them with the 2016 data. The data are available on the website of the FAOSTAT statistical database and on the website of the Statistical Office of the Republic of Serbia (RZS), which were used for comparison and analysis. The record year when it comes to the harvest of maize was 2014, in the period from 2007 to 2016, with its production over 7.951.583 tonnes. The highest production of wheat was in 2016, and it amounted to 2.884.537 t. The year 2016 recorded the highest production of wheat in the last decade while corn advanced in comparison to the previous year, the best production having been achieved in 2014. We can say that, as far as production is concerned, the situation is improving with minor fluctuations.

No abstract

78.8%) was higher than in monocrops of rye (77.0%). Harvest index of pod variate in ratio 50.3% (pea solo) and 69.5% (in intercrops pea + rye). The values of pod weight and seed weight pod -1 was different and higher in intercrops than in monocrops system of cultivation. Harvest pod index of peas was significantly higher in mixture with each small grains species genotypes than in pea's monocrops. On the base of result we can conclude that intercropping cereals + peas, have positive effect on spike and pod characteristics which values were higher in intercrops than in monocrops.