Phosphate solubilisation in solution culture by the soil fungus Penicillium radicum von Whitelaw, M.A., Harden, T.J., Helyar, K.R.

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Response of wheat, triticale and barley to lime application in semi-arid soils von Liu, D.L., Helyar, K.R., Conyers, M.K., Fisher, R., Poile, G.J.

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Simulation of seasonal stalk water content and fresh weight yield of sugarcane von Liu, De Li, Helyar, K.R.

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Influence of dryland agricultural management practices on the acidification of a soil profile von Conyers, M.K., Heenan, D.P., Poile, G.J., Cullis, B.R., Helyar, K.R.

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Efficiency of nutrient utilization and sustaining soil fertility with particular reference to phosphorus von Helyar, K.R.

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Causes of changes in pH in acidic mineral soils von Conyers, M.K., Uren, N.C., Helyar, K.R.

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Pasture and sheep responses to lime application in a grazing experiment in a high-rainfall area, south-eastern Australia. I. Pasture production von Li, G.D, Helyar, K.R, Welham, S.J, Conyers, M.K, Castleman, L.J.C, Fisher, R.P, Evans, C.M, Cullis, B.R, Cregan, P.D

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Pasture and sheep responses to lime application in a grazing experiment in a high-rainfall area, south-eastern Australia. II. Liveweight gain and wool production von Li, G.D, Helyar, K.R, Conyers, M.K, Castleman, L.J.C, Fisher, R.P, Poile, G.J, Lisle, C.J, Cullis, B.R, Cregan, P.D

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The influence of the soil matrix on nitrogen mineralisation and nitrification. II. The pore system as a framework for mapping the organisation of the soil matrix von STRONG, D. T, SALE, P. W. G, HELYAR, K. R

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Soil acidification and the carbon cycle in a cropping soil of north-eastern Victoria von SLATTERY, W. J, EDWARDS, D. G, BELL, L. C, COVENTRY, D. R, HELYAR, K. R

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Simulating the impact of acidifying farming systems on Australian soils von Robinson, J.Brett, Helyar, Keith R.

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Changes in the acidity and fertility of a red earth soil under wheat–annual pasture rotations von Helyar, K.R, Cullis, B.R, Furniss, K, Kohn, G.D, Taylor, A.C

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Direct assessment of mineral phosphorus availability to tropical crops using (32)P labelled compounds von Armstrong, R.D. (Wagga Wagga Agricultural Research Inst., Wagga Wagga, NSW (Australia)), Helyar, K.R, Prangnell, R

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Direct assessment of mineral phosphorus availability to tropical crops using ³²P labelled compounds von ARMSTRONG, R.D., HELYAR, K.R., PRANGNELL, R.

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The influence of the soil matrix on nitrogen mineralisation and nitrification: spatial variation and a hierarchy of soil properties von Strong, D.T, Sale, P.W.G, Helyar, K.R

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use of cation activity ratios to estimate the intensity of soil acidity von Conyers, M.K, Munns, D.N, Helyar, K.R, Poile, G.J

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Estimation of maintenance fertilizer needs von Rayment, G.E, Helyar, K.R

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