Observations on the Growth of Roots and Shoots of Tea (Camellia Sinensis,L.) in Southern Malawi

Abstract

The construction of simple root observation trenches is described. Preliminary studies on the growth of roots and shoots of young clonal tea growing under irrigated field conditions in Southern Malawi showed that periods of maximum shoot growth were associated with minimal root growth. Observations on mature tea showed a high concentration of roots in the top 30 cm of soil but a marked reduction in active growth in this part of the profile during drought. Preliminary observations on mature tea showed a similar reduction in root growth during a period of intense shoot growth. Pruning of both newly planted and mature tea caused roots to cease growing for approximately three months. These observations are briefly discussed in relation to their probable effects on the uptake of water and nutrients