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MENDELNET 2013Fig. 3 Tire tracks when using twin tires and waist crawler chassis(http://jos.marme.sweb.cz/pt.htm)These images show the comparison of individual fingerprints of tires with different inflationpressure and waist. The images show that the tire pressure is lower, the lower the pressure on thesoil. The tire pressure is lower, the greater the area of contact with the soil. The double tires andthree tires is less pressure on the soil, but larger contact area. Crawler chassis has a low pressure onthe soil and a small area of contact. Use of tires with larger dimensions (diameter and tire width) ispossible to use a smaller inflation pressure and thus reduce the risk of damage to the soil structure.When using a crawler chassis is appropriate to use an optimal belt width.CONCLUSIONSThese measurement confirmed that the influence of inflation pressure in a tire influences thepenetrometer soil resistance and hence the degree of soil compaction. Excessive compaction ofsoils is influenced by factors such as weight machines, width and type of tire, softened field andsoil moisture. Modern tractors have deliberately higher weight. The machine is better able totransfer engine power to the pad. This compromise manufacturers solved using wide tires tocontinuously change the tire pressure. In addition to technical solutions must continue to prioritizeagro solution, reducing the number of operations, and reducing the depth of the soil to supplysufficient quantities of organic matter. Technical and agro-technical measures reduce the energyintensity of tillage in maintaining soil fertility.REFERENCESBAUER, F., SEDLÁK, P., ŠMERDA, T.: Traktory. Knihu vydal Profi Press, 2006, Praha, 192 s.ISBN 80-86726-15-0ČÁP, M.: Problematika utužení a zhutnění půd technikou v rostlinné výrobě, Diplomová práce,Mendelu v Brně, 2013, 63 stran.www.strompraha.cz Sortiment agropneumatik a technické parametry, prezentace firmy Michelinhttp://jos.marme.sweb.cz/pt.htm876 | P age