Abstract
ABSTRACT In Coffea canephora, the number of orthotropic shoots is directly related to plant yield. The objective of this study was to evaluate the vegetative and yield performance of Coffea canephora, from the botanical variety Conilon, under different management systems for early emission of orthotropic shoots. The experiment was carried out in Ouro Preto do Oeste, Rondonia, between November 2011 and May 2014. Three types of management techniques were tested for early induction of orthotropic shoots in coffee trees (T1 = bending of the orthotropic shoot; T2 = apical pruning of the orthotropic shoot, T3 = free growing). The experiment was conducted in a randomized block design with 20 replicates. Each block consisted of a clonal genotype (clone) from the Embrapa Coffee Breeding Program. The techniques pruning and apical pruning were efficient to induce early growth of orthotropic shoots in Coffea canephora, resulting in higher yield in the first commercial bean production.
Highlights
In Coffea canephora, the number of orthotropic shoots is directly related to plant yield (Verdin Filho et al, 2014)
The training in the multiple stem system is recommended for C. canephora trees, unlike C. arabica, which is trained in the single stem system
As early as 70 days after induction, the plants had on average seven orthotropic shoots (Figure 2), that is, double the number of orthotropic branches compared with the plants in free growing (3.4 shoots)
Summary
In Coffea canephora, the number of orthotropic shoots is directly related to plant yield (Verdin Filho et al, 2014). C. canephora plants are able to produce sprouts with potential to become supporting stems for production shoots, environmental factors such as temperature and water availability (Silva et al, 2010; Partelli et al, 2013) in association with time of crop establishment (Espindula et al, 2015) and genetic variations (Rodrigues et al, 2017) influence the expression of this trait, especially in the initial growth phase To reduce these potential losses, techniques of induction of early sprouting can help in the formation of clonal crops. It allows the adjustment of the crop to the system of programmed pruning cycle (Morais et al, 2012; Partelli et al, 2013)
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