A NEW HAND-HELD RECORDING PENETROMETER FOR SOIL STUDIES

[21] SPENCER HB, 1977, SSN221 SCOTT I AGR E

[22] ROOT ELONGATION RATES OF COTTON AND PEANUTS AS A FUNCTION OF SOIL STRENGTH AND SOIL WATER CONTENT [J]. SOIL SCIENCE, 1969, 108 (02) : 113 - &

[23] TAYLOR HM, 1971, COMPACTION AGRICULTU

[24] Turnage G. W., 1973, Journal of Terramechanics, V10, P63, DOI 10.1016/0022-4898(73)90015-3

[25] TURNAGE GW, 1972, 4TH P INT C INT SOC

[26] VORHEES WB, 1978, SOIL SCI SOC AM J, V42, P344

[27] SOIL RESISTANCE TO A SLOWLY MOVING PENETROMETER [J]. SOIL SCIENCE, 1970, 109 (04) : 221 - +

[28] WELLS LG, 1977, ASAE771055 AM SOC AG

[29] Wismer R. D., 1973, J TERRAMECHANICS, V10, P49, DOI [DOI 10.1016/0022-4898(73)90014-1, 10.1016/0022-4898(73)90014-1]

[30] 1952, SOIL MECHANICS ROAD, P346

[21] SPENCER HB, 1977, SSN221 SCOTT I AGR E

[22] ROOT ELONGATION RATES OF COTTON AND PEANUTS AS A FUNCTION OF SOIL STRENGTH AND SOIL WATER CONTENT [J]. SOIL SCIENCE, 1969, 108 (02) : 113 - &

[23] TAYLOR HM, 1971, COMPACTION AGRICULTU

[24] Turnage G. W., 1973, Journal of Terramechanics, V10, P63, DOI 10.1016/0022-4898(73)90015-3

[25] TURNAGE GW, 1972, 4TH P INT C INT SOC

[26] VORHEES WB, 1978, SOIL SCI SOC AM J, V42, P344

[27] SOIL RESISTANCE TO A SLOWLY MOVING PENETROMETER [J]. SOIL SCIENCE, 1970, 109 (04) : 221 - +

[28] WELLS LG, 1977, ASAE771055 AM SOC AG

[29] Wismer R. D., 1973, J TERRAMECHANICS, V10, P49, DOI [DOI 10.1016/0022-4898(73)90014-1, 10.1016/0022-4898(73)90014-1]

[30] 1952, SOIL MECHANICS ROAD, P346