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Shank number and position performance of a rigid chisel plough in a savannah soil of Venezuela
Titel:
Shank number and position performance of a rigid chisel plough in a savannah soil of Venezuela
Auteur:
Américo J. HOSSNE GARCÍA Enmanuel A. ÁLVAREZ C.
Verschenen in:
Revista científica UDO agrícola
Paginering:
Jaargang 7 (2007) nr. 1 pagina's 209-220
Jaar:
2007
Inhoud:
The chisel plough is considered as a farm minimum tillage tool for leaving mulch remaining on the soil surface. Thequantity of carbon dioxide that gets lost during tillage depends on the used implement; the disk harrow causes bigger lossthan the chisel plough. The chisel plough has been introduced in Venezuela since 1973. The efficient performance of thechisel plough is function of the position of the bodies in the frame. The specific objectives consisted on relating the number,distances and position of the shank with the bulk density, water content, porosity, efficiency, field capacity, working depth,draft requirement, weed control and clod size. An 82 kW John Deere 4240 tractor was used, and a mounted chisel ploughBonford Superflow standard model of 7 mobile chisel, with a maximum working width of 2,44 m. A blocks design atrandom was used with eight treatments that consisted on varying the number, position and distance of the shanks with fiverepetitions. A conventional variance analysis was carried out among the eight treatments and the differences among themwere detected by means of the Minimum Significant Difference Test with (p ≤ 0.05). It was obtained: the apparent densitybetween 1,49 and 1,63 Mg m-3; the porosity between 32,59 and 37,78%; the depth between 24,86 and 28,80 cm, soilhumidity between 10,63 and 14,58 cm3 cm-3; the best weed control was for the position in V of five bodies, with 25 cmamong bodies. On concluded, recommending the appropriate positional order of the bodies for the studied parameters,including weed residuals.
Uitgever:
Universidad de Oriente Press (provided by DOAJ)
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 170 van 185 gevonden artikelen
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