Responses of tea to environment in Kenya. 3. Yield and yield distribution

In an experiment on genotype x environment interactions in tea (Camellia si nensis, yield differed between the genotypes at all sites. The highest yiel d in the third year after planting was 3760 kg ha(-1) for clone S15/10 at s ite 4 (1800 m altitude), while the lowest was 1610 kg ha(-1) for clone 6/8 at site 1 (2200 m). The dry matter contents of harvested shoots from each c lone ranged from 0.24 for clone TN14-3 down to 0.19 for clone S15/10. Yield response to soil water deficits was more pronounced at site 4, where large r deficits were observed. Hail damage affected the yield of two sites and a temperature influence on recovery was evident.