Award details

Sulphur dynamics in the soil/crop/atmosphere system

Reference	BBS/E/C/00034071
Principal Investigator / Supervisor	Dr Fangjie Zhao
Co-Investigators / Co-Supervisors
Institution	Rothamsted Research
Department	Rothamsted Research Department
Funding type	Research
Value (£)	103,431
Status	Completed
Type	Institute Project
Start date	01/08/1998
End date	31/03/1999
Duration	8 months

Abstract

This research is composed of five topics: 1. Use of isotopic techniques to quantify S cycling in soil/crop/atmosphere. The aim is to quantify the inputs and losses of S in arable, grassland and woodland systems, and to quantify how much S comes from the soil and the atmosphere using delta 34S stable isotope ratios as an indicator of anthropogenic inputs. 2. Quantification of the mineralisation and leaching of S in soil. To collect quantitative data on the important transformations and mobility of S in soils. 3. Measurement of the uptake and re-distribution of S compounds within crop plants. Using highly enriched 34S to study the movement of S in plants. 4. Evaluation of crop quality responses to S nutrition. 5. Modelling the sulphur cycle. Information from the above will be incorporated in basic C/N models, and arable and grassland models, enabling predictions to be made of the fertilizer requirements for S on different soils and of the likely losses, in order to protect the environment. 1998 1) The 34S will be measured in soil and crop samples taken from contrasting land uses and fertilizer treatments on the Broadbalk and Park Grass experiments, and in samples from these sites collected over time and stored in the Rothamsted archive. The data will be used to quantify how much S comes from the soil and the atmosphere. 2) Impact of different land use (arable, grassland and woodland) on long-term S cycling will be evaluated. Sulphur balance sheets will be calculated for different plots of the Broadbalk experiment. The relationship between C, N and S accumulation in soils will be studied. 3) Response of breadmaking quality of wheat to S will be investigated under field conditions. The effects of S addition on wheat grain S and N concentrations, flour protein compositions, dough extensibility and bread loaf volume will be evaluated.

Summary

unavailable

Committee	Closed Committee - Agri-food (AF)
Research Topics	X – not assigned to a current Research Topic
Research Priority	X – Research Priority information not available
Research Initiative	X - not in an Initiative
Funding Scheme	X – not Funded via a specific Funding Scheme

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