Impact of john deere 1270g harvester on selected physical and mechanical parameters of the soil on the operational trail
Mariusz Kormanek , Jacek Rygalik
AbstractIn Polish forests, a harvester is already widely used as a multi-operative machine. Unfortunately, there is not much literature information about the changes that take place in the soil as a result of passing such machines. The purpose of the work was to determine the impact of passing the 8-wheeler thinning harvester - John Deer 1270G with a mass of 24.5 t, on selected physical and mechanical parameters of the soil on the operational trails. The measurements were made on three different variants of research areas and terms of measurements: when soil moisture was high and low and when soil was frozen with a 15 cm snow cover. It was measured penetration resistance with use of dynamic penetrometer, moisture content on soil samples taken to the measuring cylinders and surface deformation in the places where the machine travelled by rod profiler. It was stressed that in the ruts after passing the harvester, the soil moisture decreased to a depth of 10 cm, regardless of the surface on which the measurements were made. Highest increases in penetration resistance in the ruts after the harvester's passage occurred in the depth range from 5 cm to 20 cm, on all research areas. The passage of the harvester caused the largest deformation of the ground in conditions of high soil moisture, where the rut depth reached 12.8 cm, lower on the bench with snow cover (9.4 cm), and the lowest on the soil with low moisture (7,8 cm).
|Publication size in sheets||0.5|
|Book||Kuvik Tomáš (eds.): Mobilné energetické prostriedky – hydraulika – životné prostredie – ergonómia mobilných strojov. Vedecký recenzovaný zborník, 2019, Vydavateľstvo Technickej univerzity vo Zvolene, ISBN 978-80-228-3168-0, 275 p.|
|Keywords in English||penetration resistance, dynamic cone penetrometer, forest site|
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