D. R. Lockyer

发表

A model to predict transformations and losses of nitrogen in UK pastures grazed by beef cattle

D. Scholefield, D. Whitehead, D. Scholefield, 1991, Plant and Soil.

Methane production by sheep in relation to temporal changes in grazing behaviour

D. R. Lockyer, R. A. Champion, 2001 .

Methane emissions from grazing sheep and calves

D. R. Lockyer, 1997 .

The measurement of methane losses from grazing animals.

D. R. Lockyer, S. Jarvis, 1995, Environmental pollution.

Evaluation of a system of wind tunnels for field studies of ammonia loss from grassland through volatilisation

D. R. Lockyer, J. Rydén, John C. Ryden, 1985 .

A system for the measurement in the field of losses of ammonia through volatilisation

D. R. Lockyer, 1984 .

NGAUGE : A decision support system to optimise N fertilisation of British grassland for economic and environmental goals

David Scholefield, A. Del Prado, A. Prado, 2005 .

Ammonia fluxes from grazed grassland: annual losses from cattle production systems and their relation to nitrogen inputs

D. R. Lockyer, S. Jarvis, D. Hatch, 1989, The Journal of Agricultural Science.

Volatilization of ammonia from urea applied to soil: Influence of hippuric acid and other constituents of livestock urine

D. Whitehead, D. R. Lockyer, N. Raistrick, 1989 .

Measurement of Methane from Grazing Animals - the Tunnel Method

D. R. Lockyer, P. Murray, C. Newbold, 2007 .

Ammonia volatilization from cattle slurry following surface application to grassland

D. R. Lockyer, B. Pain, R. Thompson, 1990, Plant and Soil.

A comparison of systems for measuring methane emissions from sheep

A. R. Moss, D. R. Lockyer, S. Jarvis, 1999, The Journal of Agricultural Science.

A Comparison of Methods for use in the Measurement of Ammonia Emissions Following the Application of Livestock Wastes to Land

V. R. Phillips, J. V. Klarenbeek, D. R. Lockyer, 1993 .

Volatilization of ammonia from cattle urine applied to grassland

D. Whitehead, D. R. Lockyer, 1990 .

Ammonia emissions from cattle, pig and poultry wastes applied to pasture.

J. V. Klarenbeek, D. R. Lockyer, B. Pain, 1989, Environmental pollution.

Decomposing grass herbage as a source of ammonia in the atmosphere

D. Whitehead, D. R. Lockyer, 1989 .

Fate of nitrogen in cattle slurry following surface application or injection to grassland

Rodney B. Thompson, D. R. Lockyer, J. Rydén, 1987 .

The volatilization of ammonia from perennial ryegrass during decomposition, drying and induced senescence

D. Whitehead, D. R. Lockyer, N. Raistrick, 1988 .

A System for Exposing Plants to Atmospheres Containing Low Concentrations of Sulphur Dioxide

D. R. Lockyer, L. P. Jones, D. W. Cowling, 1976 .

Increased Yield through Correction of Sulphur Deficiency in Ryegrass exposed to Sulphur Dioxide

D. R. Lockyer, L. Jones, D. W. Cowling, 1973, Nature.

The influence of the concentration of gaseous ammonia on its uptake by the leaves of italian ryegrass, with and without an adequate supply of nitrogen to the roots

D. Whitehead, D. R. Lockyer, 1987 .

Non-symbiotic nitrogen fixation in some soils of England and Wales

D. R. Lockyer, D. W. Cowling, 1977 .

Uptake, cycling and fate of nitrogen in grass-clover swards continuously grazed by sheep

R. J. Orr, D. R. Lockyer, A. Parsons, 1991, The Journal of Agricultural Science.

The Uptake of Gaseous Ammonia by the Leaves of Italian Ryegrass

D. Whitehead, D. R. Lockyer, 1986 .

Increased growth of ryegrass exposed to ammonia

D. R. Lockyer, D. W. Cowling, 1981 .

RESPONSE OF SO2‐SENSITIVE AND RESISTANT GENOTYPES OF RYEGRASS (LOLIUM PERENNE L.) TO PROLONGED EXPOSURE TO SO2

D. R. Lockyer, F. R. Whatley, M. Kozioł, 1986 .

Preliminary studies of the exchanges of methane between grassland and the atmosphere

D. R. Lockyer, S. Jarvis, G. Dollard, 1994 .

Laboratory measurements of dry deposition of sulphur dioxide on to several soils from England and Wales

D. R. Lockyer, J. Fenlon, D. W. Cowling, 1978 .

An assessment of the concentration of SO2 to which plants are exposed in a system of chambers

P. Chapman, D. R. Lockyer, M. Kozioł, 1981 .

The Effect of SO2 on Lolium perenne L. Grown at Different Levels of Sulphur and Nitrogen Nutrition

D. R. Lockyer, D. W. Cowling, 1978 .

Growth of Lucerne (Medicago sativa L.) Exposed to Sulphur Dioxide

D. R. Lockyer, D. W. Cowling, 1981 .

Growth of Perennial Ryegrass (Lolium perenne L.) Exposed to a Low Concentration of Sulphur Dioxide

D. R. Lockyer, D. W. Cowling, 1976 .

PLANT‐AVAILABLE AND EXTRACTABLE SULFUR IN SOME SOILS OF ENGLAND AND WALES

D. R. Lockyer, L. Jones, D. W. Cowling, 1972 .

A COMPARISON OF THE REACTION OF DIFFERENT GRASS SPECIES TO FERTILIZER NITROGEN AND TO GROWTH IN ASSOCIATION WITH WHITE CLOVER

D. R. Lockyer, D. W. Cowling, 1965 .

A COMPARISON OF THE REACTION OF DIFFERENT GRASS SPECIES TO FERTILIZER NITROGEN AND TO GROWTH IN ASSOCIATION WITH WHITE CLOVER. II. YIELD OF NITROGEN

D. R. Lockyer, D. W. Cowling, 1965 .

A comparison of the yield of three grass species at various levels of nitrogenous fertilizer sown alone or in a mixture

D. R. Lockyer, D. W. Cowling, 1968, Journal of Agricultural Sciences.

Organic matter and nitrogen in the unharvested fractions of grass swards in relation to the potential for nitrate leaching after ploughing

D. Whitehead, D. R. Lockyer, A. W. Bristow, 1990, Plant and Soil.

The response of perennial ryegrass to nitrogen in various periods of the growing season

D. R. Lockyer, D. W. Cowling, 1970, The Journal of Agricultural Science.

Agriculture group and fertiliser society symposium soil nitrogen and crop growth

R. Q. Cannell, D. R. Lockyer, T. Batey, 1975 .

Ammonia emission from grassland and livestock production systems in the UK.

E. A. Garwood, D. Whitehead, D. R. Lockyer, 1987, Environmental pollution.

Proceedings of the Twenty-Seventh Meeting of the Agricultural Research Modellers' Group

D. R. Lockyer, O., D., 1996, The Journal of Agricultural Science.