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R252 Bruising Sensitivity at Harvest

Publication Date: 
15 August 2011
Author/Contact :
Author/Contact: 
Fraser Milne

Contractor :
Contractor: 
SAC

Full Research Project Title: Bruising sensitivity at harvest
Duration: February 2004 - March 2007

Aim: To examine the effect of soil moisture and crop maturity at haulm destruction on changes in sensitivity to tuber bruising at harvest.

This project was developed from observations from a previous project (BRUCE) that dry conditions at haulm destruction may influence levels of bruising at harvest. The project examined the effect of soil moisture and crop maturity at haulm destruction on changes in sensitivity to tuber bruising at harvest.

Overall the results from three years have shown that in some varieties there is a definite risk of more bruising from soils that are dry at haulm destruction. The magnitude of the effect varied with variety and was most noticeable with Maris Piper and Lady Rosetta.

There was a consistent trend of low levels of bruising at defoliation and large increases in bruising at harvest three to five weeks after defoliation. As yet the factors underlying this increase in bruising susceptibility have not been identified. Further details of the work are provided in the final report.

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