Abstract
ABSTRACT Cutting is the main vegetative propagation method used for the production of Coffea canephora plantlets. In this method, parent plants are conducted in a specific field, called clonal garden, which must be managed to produce clonal cuttings. The objective of this study was to evaluate the production of cuttings and the export of nutrients by Coffea canephora in different periods in the Southwestern Amazon. The experiment was carried out in a 6 × 3 split-plot scheme (repeated measures in time), consisting of the combination of six clonal Coffea canephora genotypes (plot) and three cutting collection periods (subplots). The genotypes were: C-057, C-088, C-089, C-125, C-130 and C-160; and the evaluation sampling times were January/2017, May/2017 and September/2017. The applied design was a completely randomized design with four repetitions. The dry season, from May to September, promotes lower orthotropic stem dry mass accumulation by Coffea canephora, but allows obtaining a larger number of viable cuttings for the production of clonal plantlets. Nutrient accumulation by orthotropic stems for cutting production follows the following order: N > K > Ca > Mg > S > P > Mn > Fe > Zn > Cu. Nutrient export by the cuttings follows a descending order: K > N > Ca > Mg > P > S > Mn > Fe > Zn > Cu.
Highlights
The formation of high-yielding commercial orchards of Coffea canephora is directly linked to the use of good-quality plantlets (Ferrão et al, 2017)
Nutrient accumulation by orthotropic stems for cutting production follows the following order: N > K > Ca > Mg > S > P > Mn > Fe > Zn > Cu
This suggests that parent plants of C. canephora that originated these cuttings invested more photoassimilates in the formation of nodes than in internode elongation, that is, they produced shorter internodes
Summary
The formation of high-yielding commercial orchards of Coffea canephora is directly linked to the use of good-quality plantlets (Ferrão et al, 2017). In addition to genetic quality, plantlets must show sanitary and physiological quality. The main factor that will determine the sanitary and physiological quality of the plantlets is the health of the parent plant. The technical recommendations indicate the exclusive use of parent plants for the production of cuttings, in the Amazon, cuttings have been collected in commercial orchards. The beginning of plantlet production is restricted to the months from July to September, corresponding to three, four or five months after the harvest and preparation of the parent plants. The period of planting the plantlets in the field is restricted to the months from October to December (Espindula et al, 2015) and from January to February
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
