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A preliminary study of the influence of chemical sprays on fruit set and abscission in Robusta coffee (Coffea canephora) Pierre ex Froehner

Application of 200 ppm of gibberellic acid before anthesis produced some reduction in the percentage of fruit retained 28 days after fruit set but had little effect on the actual percentage of fruit set in Robusta coffee (Coffea canephora Pierre ex Froehner). In the same cultivar, 100–1000 ppm of et...

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Main Author: Adenikinju, S.A.
Format: Artículo
Language:Inglés
Published: Instituto Interamericano de Cooperación para la Agricultura (IICA) 2025
Subjects:
Coffea canephora||Coffea canephora||Coffea canephora||Coffea canephora
Plaguicida||pesticides||pesticida||pesticide
Ácido giberelico||gibberellic acid||ácido giberélico||acide gibbérellique
Etileno||ethylene||etileno||éthylène
Etapa de floración||flowering stage||undefined||stade de floraison
Aplicación de abono||fertilizer application||aplicação de fertilizante||fertilisation
Nigeria||Nigeria||Nigéria||Nigéria
Sede Central
Online Access:https://repositorio.catie.ac.cr/handle/11554/12885
Summary:Application of 200 ppm of gibberellic acid before anthesis produced some reduction in the percentage of fruit retained 28 days after fruit set but had little effect on the actual percentage of fruit set in Robusta coffee (Coffea canephora Pierre ex Froehner). In the same cultivar, 100–1000 ppm of ethrel (2-chloroethyl phosphonic acid) produced large reductions in the percentage of fruit retention in two separate experiments. Concentrations of 500 and 1000 ppm resulted in total fruit loss within four months of application in one experiment. It was concluded that ethrel offered some potential to reduce the number of fruits produced by young coffee plants in their first years of production.

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