Resistance of clonal cocoa in Papua New Guinea to bark canker caused by Phytophthora palmivora (Butl.) Butl.

C. Prior, E. Sitapai


Sixteen clones of Trinitario cocoa were assessed twice for resistance to Phytophthora palmiuora bark canker during 1977. Agreement between the two rankings based on these two assessments was statistically significant. The clones showed a very wide range in resistance.

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