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Effects of Harvesting Policy and Nitrogen Application Rates on the Production of Tea in Central Africa. II. Quality and Total Value of the Crop

Published online by Cambridge University Press:  03 October 2008

J. B. Cloughley
J. B. Cloughley
Affiliation:
Tea Research Foundation of Central Africa, PO Box 51, Mulanje, Malawi
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Summary

The black teas produced from the field treatments described previously (Cloughley et al., 1983) were evaluated chemically and organoleptically. Increasing N application rates and harvesting larger shoots had adverse effects on the liquor quality as assessed by theaflavin (TF) analysis, and on the value of the product as assessed by tea tasters' sensory examination. There were also large, regular intraseasonal fluctuations in TF content, small values corresponding to occasions of crop peaks. Shoots predominantly of 2 or 3 leaves and a bud harvested from plots given 135 kg N ha−1 generated the largest total cash value. A total value index (TVI), involving yield and quality, is introduced and illustrated.

Type
Research Article
Information
Experimental Agriculture , Volume 19 , Issue 1 , January 1983 , pp. 47 - 54
Copyright
Copyright © Cambridge University Press 1983

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