caa a22 4500 386327173 CHVBK 20180307111657.0 cr unu---uuuuu 161130e198910 xx s 000 0 eng 10.1017/S0014479700015179 doi S0014479700015179 pii (NATIONALLICENCE)cambridge-10.1017/S0014479700015179 A Water Stress Index for Tea (Camellia sinensis) [Elektronische Daten] A simple Stress Time Index (STI) for predicting yield loss in the tea crop due to drought is proposed, based on the daily summation of the difference between the potential soil water deficit and a specified limiting value. Validation of the technique with results from a line-source irrigation experiment with a single clone in the Southern Highlands of Tanzania suggests that there is a linear relationship between STI and relative yield loss during the warm dry season. As a result of changes in the composition of the shoot population at each harvest the apparent critical deficit at which shoot growth is restricted increases from below 20 to 300 mm as the dry season progresses. The rate of yield loss with increasing STI also varies through the dry season for the same reason. Copyright © Cambridge University Press 1989 Stephens William Department of Agricultural Water Management, Silsoe College, Silsoe, Bedford MK45 4DT, England Carr M. K. V. Department of Agricultural Water Management, Silsoe College, Silsoe, Bedford MK45 4DT, England Experimental Agriculture Cambridge University Press 25/4(1989-10), 545-558 0014-4797 25:4<545 1989 25 EAG https://doi.org/10.1017/S0014479700015179 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0014479700015179 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stephens William Department of Agricultural Water Management, Silsoe College, Silsoe, Bedford MK45 4DT, England NATIONALLICENCE 700 1- Carr M. K. V. Department of Agricultural Water Management, Silsoe College, Silsoe, Bedford MK45 4DT, England NATIONALLICENCE 773 0- Experimental Agriculture Cambridge University Press 25/4(1989-10), 545-558 0014-4797 25:4<545 1989 25 EAG CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge