Tag Archives: compaction

478–489 G. Macrì,, A. De Rossi, S. Papandrea, F. Micalizzi, D. Russo and G. Settineri
Evaluation of soil compaction caused by passages of farm tractor in a forest in southern Italy
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Evaluation of soil compaction caused by passages of farm tractor in a forest in southern Italy

G. Macrì¹,*, A. De Rossi¹, S. Papandrea¹, F. Micalizzi², D. Russo¹ and G. Settineri¹

¹ Mediterranean University of Reggio Calabria, Department of AGRARIA, Feo di Vito, IT89122 – Reggio Calabria, Italy
² Regional Department Agriculture, Cittadella Regionale – Germaneto – IT88100 Catanzaro, Italy
*Correspondence: giorgio.macri@unirc.it

Abstract:

In recent decades, the use of heavy machinery in forest management has significantly increased, causing the compaction, that often remains for many years and may contribute to a decline in long-term site productivity. Severity of the damage depends on vehicle mass, weight of the carried loads, ground morphology, and soil properties, such as moisture. In Southern Italy, timber extraction is mainly done by farm tractors and the study was carried out in a conifer stand to evaluate the changes in penetration resistance, the water content, the bulk density and the porosity, after different numbers passes 0 (control), 1, 5, 10 and 15 respectively, of one farm tractor (Landini – Landpower 135 TDI). The results indicated that all parameters were significantly higher in the trafficked soil portions rather than in the undisturbed ones. We can conclude that a significant relationship was observed between compaction degree and traffic intensity. In fact, the passage of forestry machines causes soil compaction, leading to significant changes in the soil structure and moisture conditions.

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298–306 F. Tan, I.S. Dalmıs and F. Koc
Effects of compaction pressure on silage fermentation in bunker silo
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Effects of compaction pressure on silage fermentation in bunker silo

F. Tan¹*, I.S. Dalmıs² and F. Koc³

¹University of Namık Kemal, Faculty of Agriculture, Department of Biosystem Engineering, Campus street, Number:1, TR59030 Tekırdag, Turkey
²University of Namık Kemal, Faculty of Corlu Engineering, Department of Mechanical Engineering, University 1, Sokak No:13, TR59860 Corlu/Tekirdag, Turkey
³University of Namık Kemal, Faculty of Agriculture, Department of Animal Science, Campus street, Number:1, 59030 Tekirdag, Turkey.
*Correspondence: ftan@nku.edu.tr

Abstract:

The aim of this research was to determine the effects of compaction pressure on maize silage fermentation under field conditions. The CAT 955 L type work machine was used for the compaction of the material. In this research, a pressure measurement system was developed to measure the compaction pressure in bunker silos. In bunker silos, 24 points for pressure and temperature measurement were identified. Chemical and microbiological analyzes were made by taking samples from each measurement point. The lowest temperature is measured in the back wall of the silo. There is a significant relationship between pressure and temperature. Pressure had a significant effect (P < 0.05) on silage fermentation. There was a significant correlation between regions in bunker silo and pressure (R2 = 0.914, P < 0.01).

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175-180 E. Nugis and J. Kuht
Outline of results concerning assessment of soil compaction in Estonia
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Outline of results concerning assessment of soil compaction in Estonia

E. Nugis¹ ² and J. Kuht³

¹Institute of Technology, Estonian University of Life Sciences, Kreutzwaldi 56, Tartu,
Estonia, EE51014; e-mail: edvin.nugis@emu.ee
²Estonian Research Institute of Agriculture, Teaduse 13, Saku, Estonia,
EE75501;e-mail: edvin.nugis@eria.ee 3
³Institute of Agricultural and Environmental Sciences, Estonian University of Life
Sciences, Kreutzwaldi 56, Tartu, Estonia, EE51014; e-mail: jaan.kuht@emu.ee

Abstract:

In Estonia the effect of compaction on soil/subsoil is studied in two leading organizations: Estonian University of Life Sciences (EMÜ) and Estonian Research Institute of Agriculture (ERIA). An attempt has been made to methodologically harmonize them with methodological instructions given in the ISTRO (International Soil Tillage Research Organization). A novel methodology for complex assessment of the effect and influence of mobile technical means (MTM) on soil has been offered. The soil has been examined as a polydisperse body where certain changes occur in compactibility, vulnerability, achieving physical mellowness and in textural composition. The relevant assessment criteria were worked out and approved in three separately carried out tests. As it appears from the results, such an approach allows us to do the necessary generalizations in assessment of the effect of MTM on soil, to adequately value the respective factors (extent, character, sign systems), i.e. issue from soil physical properties and pedosemiotics characteristics at the same time, while also not excluding the energy consumption.

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