A NEW HAND-HELD RECORDING PENETROMETER FOR SOIL STUDIES

[1] BOWEN HD, 1976, 761516 AM SOC AGR EN

[2] BROWN KT, 1975, SSN185 SCOTT I AGR E

[3] CASSEL DK, 1978, SOIL SCI SOC AM J, V42, P334

[4] DUMAS WT, 1975, ASAE751050 AM SOC AG

[5] GOODERHAM PT, 1973, THESIS U READING

[6] CULTIVATION SYSTEMS FOR SPRING BARLEY WITH SPECIAL REFERENCE TO DIRECT DRILLING (1971-1974) [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1977, 88 (JUN) : 631 - 644

[7] HOLMES JC, 1970, CROP GROWTH DEV, P46

[8] Houben J. M. M. T., 1974, Bedrijfsontwikkeling, V5, P141

[9] RECORDING CONE PENETROMETER FOR MEASURING SOIL RESISTANCE [J]. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1977, 22 (02): : 209 - 212

[10] EVALUATION OF PENETROMETERS FOR MEASURING SOIL STRENGTH [J]. JOURNAL OF TERRAMECHANICS, 1977, 14 (03) : 137 - 151

[1] BOWEN HD, 1976, 761516 AM SOC AGR EN

[2] BROWN KT, 1975, SSN185 SCOTT I AGR E

[3] CASSEL DK, 1978, SOIL SCI SOC AM J, V42, P334

[4] DUMAS WT, 1975, ASAE751050 AM SOC AG

[5] GOODERHAM PT, 1973, THESIS U READING

[6] CULTIVATION SYSTEMS FOR SPRING BARLEY WITH SPECIAL REFERENCE TO DIRECT DRILLING (1971-1974) [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1977, 88 (JUN) : 631 - 644

[7] HOLMES JC, 1970, CROP GROWTH DEV, P46

[8] Houben J. M. M. T., 1974, Bedrijfsontwikkeling, V5, P141

[9] RECORDING CONE PENETROMETER FOR MEASURING SOIL RESISTANCE [J]. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1977, 22 (02): : 209 - 212

[10] EVALUATION OF PENETROMETERS FOR MEASURING SOIL STRENGTH [J]. JOURNAL OF TERRAMECHANICS, 1977, 14 (03) : 137 - 151