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Evaluation of grafting on Coffea canephora var. Robusta and chemical treatment for control of Pratylenchus sp in C. arabica cropping system

Villain L., Sarah J.L., Decazy B., Molina A., Sierra S.. 1996. Nematropica, 26 (3) : p. 325-325. International nematology congress. 3, 1996-07-07/1996-07-12, Gosier (Guadeloupe).

Pratylenchus sp., among other pests, has a significant impact on the economy of coffee plantations throughout Central America. A field experimentation was undertaken in the southwest of Guatemala to assess damage due to nematode and to evaluate 2 different methods of control: grafting on C. canephora var. Robusta, and chemical treatments (terbufos: 1 to 2g/plant twice a year). This experiment include 4 treatments (1- no grafting without chemical ; 2-no grafting plus chemical ; 3- grafting without chemical; 4- gafting plus chemical) and was carried out for five years, including the first 3 commercial harvests. Observations of nematode numbers, total weight of harvested berries and number of dead plants demonstrated the high degree of pathogenicity of Pratylenchus sp. on C. arabica and the very good efficiency of grafting as a method of control (production coffee beries multiplied by 3,6 on average). In contrast, chemical treatments resulted in a nonsignificant increase in production (x 1,14)

Mots-clés : coffea arabica; coffea canephora; greffage; pratylenchus; lutte antinématode; système de culture; amérique centrale; guatemala

Article (a-revue à facteur d'impact)

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