Results of the investigation effects of soil compaction on yield of winter wheat

Moving of tractors and mobile systems can be divided in two groups: moving trough the inner parts of fields, and through the headlands. On headlands, soil compressing is more intensive due to lower moving speeds while turning, which enable soil to be exposed longer time to the normal charge, and to get more compressed. Under the influence of pressure of mobile machines and other factors, change of soil appears causing unfavorable conditions for growth and development of crops, which is being manifested by permanent soil damage, yield decrease, and other costs increase. The aim of these trials was to determine influence of soil compressing at headlands and inner parts of fields on wheat yields, as the most present crops in agro-ecological conditions of Northern Kosovo and Metohija. Soil compressing has been measured by Eijkelkamp penetrometer, at the following depths: 0-20 cm. Results of the trial indicate that during two years of trials, soil compressing at headlands was germination 31,88% higher compared to the inner parts of fields, while increase of soil compressing at the headlands before harvesting was 40,52 in average. The yields of wheat at the inner parts of the fields compared to those at the headlands were 50.98% higher. .