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465 results on '"Hatch, D J"'

35. Halothane Hepatitis In Children [With Reply]

Author

Noble, D. W., Battersby, E. F., Bingham, R., Facer, E., Glover, W. J., James, I., Mackersie, A., Sumner, E., Black, G. W., Hatch, D. J., Morris, P., Wark, H. J., Neuberger, J., Mieli-Vergani, G., Mowat, Alex P., and Williams, Roger

Published
1987

43. Acute lung injury/Airway

Author

Bindl, L., Kühl, G., Lasch, P., Appel, Möller, J., Hammer, J., Numa, A., Newth, C. J. L., Peters M. J., Kiff K., McErlean B., Yates R., Hatch D. J., Tasker R. C., Martínez-Azagra, A., Flores, J. Casado, Bravo, N. González, Mora, E., Pérez, J. García, Feickert, H. J., Kayser, Ch., Sasse, M., Fackler, J., Steinhart, C., Nichols, D., Bohm, D., Heulitt, M., Green, T., Martin, L., Newth, K., Klein, M., Ware, J., Sagy, Mayer, Poustchi-Amin, Mehdi, Nimkoff, Laura, Silver, Peter, Shikowitz, Mark, Leonidas, John C., and Arbeitsgemeinschaft ARDS im Kindesalter

Published
1996
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46. Soil mineral N retention and N2O emissions following combined application of 15N-labelled fertiliser and weed residues

Author

Garcia-Ruiz, R., Gomez-Munoz, B., Hatch, D. J., Bol, R., and Baggs, E. M.

Subjects
Chemistry, Analytical, Biochemical Research Methods, Spectroscopy
Abstract

RATIONALE The combination of plant residues with inorganic fertiliser-N provides the potential to increase N-use efficiency in agricultural fruit production systems, such as olive orchards. The development of weeds in the inter-canopy area of olive orchards is encouraged as a novel strategy to reduce soil erosion. However, little is known about soil N retention or N2O production following the combined application of inorganic-N with the mulched weed residues. METHODS Emissions of 15N-N2O and soil mineral 15N retention were measured following combined applications of 15N-labelled fertiliser and a range of olive crop weed residues to a silty loam soil under controlled conditions. These plant residues differed in their C:N ratios, lignin and polyphenol contents. RESULTS The magnitude of soil 15N-NO3 retention from combining plant residues and fertiliser-N was highly dependent on potential N mineralisation (r?=?-0.96) and the (lignin?+?polyphenol)-to-N ratio (r?=?0.98) of the residues. Fertiliser-N-derived retention was zero for a legume-based mulch but up to 80% in the treatment containing plant residues with a high (lignin?+?polyphenol)-to-N ratio. N2O emissions increased after the addition of residues, and increased further (up to 128%) following the combined application of inorganic fertiliser and residues. Fertiliser-derived 15N-N2O was

Published
2012

49. Making the most of soil nitrogen

Author

Goodlass, G, Hatch, D J, Shepherd, M A, King, J A, Cuttle, S P, Roderick, S, Briggs, S, Atkinson, C, Ball, B, Davies, D H K, Rees, R, Russell, G, Stockdale, E A, Watson, C A, Walker, R, and Younie, D

Subjects
Crop combinations and interactions, Nutrient turnover, Composting and manuring, food and beverages
Abstract

Optimising the amount of nitrogen captured by fertility building crops is essential for successful organic farming. This study used a combination of literature review, empirical measurements, model development and farmer participation to produce improved guidelines on making the most of soil nitrogen for organic farmers and growers. The main field experiment examined the impact of cutting and mulching on the build up of soil nitrogen. Recommendations to organic farmers from this part of the work, are that cutting and removing herbage during the fertility building phase promotes the highest amount of nitrogen fixation. However the highest soil residues occurred when clover was mulched in situ. Application of organic manures to legumes should also be avoided if the maximum amount of atmospheric N is to be fixed. The fi ndings from the study have been made available in a Guidelines Booklet.

Published
2006

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