Influence of Tree Shade on the Growth and Chlorophyll Content of Arabica Coffee Plants Established in an Agroforestry System at Southern Manabí, Ecuador
Influence of Tree Shade on the Growth and Chlorophyll Content of Arabica Coffee Plants Established in an Agroforestry System at Southern Manabí, Ecuador
Julio Adolfo Corzo-Bacallao1*, Carlos Alfredo Salas-Macías1, Osvaldo Fonseca-Rodríguez2,3, Felipe R. Garcés-Fiallos1, Erika Isabel Alcívar-Muñoz1 and Henry Fabricio Baque-Loor1
Effects of shadow levels (S1, S2, and S3) on phenological variables of Arabica coffee trees (Coffea arabica L.) measured fortnightly, first trimester of postharvest development. Total branches in the middle third (TB-M) and lower third (TB-L); Total productive branches in the middle third (TPB-M) and lower third (TPB-L); Nodes of a productive branch in the middle third (NPB-M) and lower third (NPB-L); Productive nodes of a productive branch in the middle third (PNPB-M) and lower third (PNPB-L); Fruits (or flowers) in productive branches of the middle third (FPB-M) and lower third (FPB-L); Relative amount of chlorophyll measured in SPAD units (C); Diameter (cm) of the stem of the coffee tree at 15 cm from the ground (D); Height (m) of the coffee tree (H).
Model results with significant estimates. Effects of high (S3) and low (S1) shadow levels, time (T) and S x T interaction on dependent variables, compared to a shadow level as a control (S2=0). Total branches in the middle third (TB-M) and lower third (TB-L); Total productive branches in the middle third (TPB-M) and lower third (TPB-L); Nodes of a productive branch in the middle third (NPB-M) and lower third (NPB-L); Productive nodes of a productive branch in the middle third (PNPB-M) and lower third (PNPB-L); Fruits (or flowers) in productive branches of the middle third (FPB-M) and lower third (FPB-L); Relative amount of chlorophyll measured in SPAD units (C); Diameter (cm) of the stem of the coffee tree at 15 cm from the ground (D); Height (m) of the coffee tree (H).
