1981
DOI: 10.1007/bf02182016
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A comparison of penetrometer pressures and the pressures exerted by roots

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Cited by 89 publications
(33 citation statements)
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“…One tube without plants was prepared, and the soil mechanical impedance was measured with a developed penetrometer device (Iijima et al, 1990) equipped with a 2.0 mm metal probe. The diameter of soil column in the tube was more than 20 times that of the probe, so that there would be no edge effect (Whiteley et al, 1981) for the measurement of soil mechanical impedance.…”
mentioning
confidence: 99%
“…One tube without plants was prepared, and the soil mechanical impedance was measured with a developed penetrometer device (Iijima et al, 1990) equipped with a 2.0 mm metal probe. The diameter of soil column in the tube was more than 20 times that of the probe, so that there would be no edge effect (Whiteley et al, 1981) for the measurement of soil mechanical impedance.…”
mentioning
confidence: 99%
“…A resistência do solo à inserção de um penetrômetro é um método secundário na avaliação da compactação, sendo uma maneira rápida e fácil de medir a resistência à penetração a várias profundidades. O aparelho é muito utilizado para relacionar fatores de resistência do solo à elongação radicular (Black, 1965;Whiteley et al, 1981). No presente trabalho, verificou-se a penetração da haste do penetrômetro até 0,70 m de profundidade.…”
Section: Resultsunclassified
“…Penetrometer measurement is a reliable proxy for the pressure required by roots to penetrate soils during root elongation (Taylor and Ratliff, 1969;Whiteley et al, 1981;Bengough and Mullins, 1991). Previous studies of hardpans in the region were largely based on bulk density measurements, which is labour intensive and costly.…”
Section: Soil Penetration Resistancementioning
confidence: 99%