STUDY OF THE SECONDARY BRANCHING ON 5 COF FEA-ARABICA L CULTIVARS IN BURUNDI

After a reminder of the secondary branching process studied and descri bed by Ph. de Reffye for Robusta coffee, this article goes on to study the secondary ramification of five Arabica coffee cultivars in Burund i. It is seen that Arabica coffee is highly likely to produ ce seconda ry branches, which occur as early as the fifth storey. The number of b ranches produced depends on the rank of the primary node for a given s torey and also on the storey it occurs in. Coupling phenomena have bee n seen between both the secondary branches of the same primary node an d between neighbouring primary nodes. This study completes the previou s one, which covered the growth Of the same five cultivars and primary branch mortality.This provides all the data necessary for Arabica cof fee simulation. A comparison between the simulated values and those ac tually observed show that growth phenomena have been mastered.