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R263 Management of Tuber Water Status to Reduce Bruising

Publication Date: 
15 August 2011
Author/Contact :
Author/Contact: 
Mark Stalham

Contractor :
Contractor: 
CUF

Research Project Title: Management of tuber water status to reduce bruising
Duration: April 2005 - March 2008

Aim: To establish the relationship between susceptibility to bruising and tuber water potential (turgor) for defined soil conditions.

The research programme, which began in 2005, aimed to establish the relationship between susceptibility to bruising and tuber water potential (turgor) for defined soil conditions. It was based on the recognition that turgor, not dry matter concentration DM, is the tuber characteristic directly linked to the physical characteristics which determine susceptibility.

Field treatments were used to generate a broad range of soil and plant water potentials so that tubers covering the whole range of commercial experience were available. Changes in bruise susceptibility from once the tubers have reached a commercial size grade until after complete canopy senescence were monitored and related to soil moisture status.

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