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J.I. Córcoles, A. Domínguez, M.A. Moreno, J.F. Ortega and J.A. de Juan

. Yonekawa, S., Sakai, N. and Kitani, O. 1996. Identification of idealized leaf types using simple dimensionless shape factors by image analysis. Transaction of the ASAE 39: 1525-1533.

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P. Tuohy, J. Humphreys, N.M. Holden, J. O’Loughlin, B. Reidy and O. Fenton

profile and hydraulic conductivity measurements in the field ( Bouwer and Rice, 1983 ; Oosterbaan and Nijland, 1994 ; Mulqueen, 1995 ) and laboratory ( BS 1377-5:1990 ). Such data along with soil profile geometry parameters are used with drainage design formulae ( Ernst, 1956 ; Kirkham, 1958 ; Toksöz and Kirkham, 1961 ; Toksöz and Kirkham, 1971a , b ; Ritzema, 1994 ) to prescribe an idealised drain depth and spacing (distance between adjacent drains). There has been little uptake of these scientific design methods by Irish landowners due to the financial cost