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To study the effects of C02 & temperature on growth and development of vegetable crops to provide ....... - CC0303

This study will quantify long-term effects of elevated CO2 levels and temperature on the yield (i.e. whole-plant dry weight) of different types of field vegetables with a view to predicting responses of these crops to global increases in CO2 and temperature expected during the next century. Crops that are both representative of major agricultural commodities (e.g. legumes, root crops and onions, brassicas and salads), as well as those that contrast with each other in terms of adaptation to climate (e.g. peas, which are adapted to a cool climate, Phaseolus beans which require high temperatures, and alliums which show marked temperature optima for growth) will be selected. Ten separate, daylit controlled environment cabinets (which will allow the crops to grow in natural light, atmospheric humidities and with non-limiting supplies of water and minerals) will be used to determine yield responses of the vegetable crops to a range of elevated CO2 levels and temperature regimes. Modelling techniques will then be used to summarise yield/environment responses of crops and to determine the response to simultaneous changes in the levels of CO2 and temperature. Results of the study will assist in the development of models which relate dry matter yield to the environment. The models developed may then be used to theoretically examine influence of CO2 and temperature on dry matter yield, which could help in developing effective strategies for crop management under different climatic conditions.
Time-Scale and Cost
From: 1991

To: 1997

Cost: £799,000
Contractor / Funded Organisations
Horticulture Research International
Fields of Study
Agriculture and Climate Change