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[34] MASTERSON CL, 1976, IBP, V7, P299

[35] MOUSTAFA E, 1969, NEW ZEAL J AGR RES, V12, P691

[36] MUNRO JMM, 1974, J BRIT GRASSLAND SOC, V29, P213

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[39] NEWBOULD P, 1981, UNPUB J AGR SCI CAMB

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[31] LOCKYER DR, 1977, J BRIT GRASSLAND SOC, V32, P7

[32] NITRATE AND AMMONIUM NITROGEN CONCENTRATION IN WATER DRAINING THROUGH SOIL MONOLITHS IN LYSIMETERS CROPPED WITH GRASS OR CLOVER OR UNCROPPED [J]. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1973, 24 (12) : 1489 - 1495

[33] MARTIN NJ, 1978, ECOL STUD, V27, P113

[34] MASTERSON CL, 1976, IBP, V7, P299

[35] MOUSTAFA E, 1969, NEW ZEAL J AGR RES, V12, P691

[36] MUNRO JMM, 1974, J BRIT GRASSLAND SOC, V29, P213

[37] MUNRO JMM, 1973, C P POTASSIUM I LTD, V3, P47

[38] NEWBOULD P, 1981, BR GRASSLD SOC OCC S, V12, P1

[39] NEWBOULD P, 1981, UNPUB J AGR SCI CAMB

[40] NEWBOULD P, 1978, 7 HILL FARM RES ORG, P49