3/22/2023 0 Comments Tico berrySimilarly, in each evaluation, the traditional manual collection with a basket was used as the comparison, that is, each collector carried out the labor in its usual form. In all of the evaluations, to determine the average load of ripe coffee available (kg of ripe coffee per tree), 17 trees were randomly taken from each batch and harvested of all their coffee for subsequent weighing. To improve the collection of the fruits detached by the device, a In general, during the four evaluations, it was recommended that the Alfa device be focused on branches with medium and high ripe fruit concentrations (> 40% mature fruits) and that, for those branches with low concentrations, the operators should harvest manually, preferably using the “improved hand-picking method” (Vélez et al., 1999), ensuring that the fruits were completely harvested without the need for a second pass. The evaluation involved six collectors each was given an Alfa device and a “Tico” type basket, a container used for harvesting coffee in Costa Rica, whose dimensions are slightly larger than the traditional baskets used in Colombia. The tests were conducted during the principal harvest of 2010 in three fields planted with the varieties Colombia and Castillo®, second, third and fourth harvest, with between 2,827 and 4,746 plants, planted at 2 x 1 m and 3 x 1 m, with slopes between 10% and 50%. For the first harvest day with the Alfa device, an incentive of $US 0.52 cents per kilogram of collected coffee was paid to promote its use. The two collectors were simultaneously positioned, one on each side of the harvested tree. They then harvested for one day in order to become familiar with the technology. Before starting the tests, the two operators formed a harvesting pair and received an orientation of 15 min for the Alfa device and traditional baskets with canvas. 2008) consisting of a conventional basket and a canvas attached to its top that was extended and secured to the stalk of the harvested tree (Figure 2). Alfa device and basket with canvas to receive the fruit detached by the device (Oliveros et al. The harvest included two operators each was given an Two collectors were equipped for the harvest with an Alfa device and a tray to receive detached fruits, as proposed by Oliveros (2003). The evaluation was conducted in lots with Colombia variety coffee trees, second and third harvest, planted at 1.5 x 1.5 m, steep topography, with the presence of rocks and slopes of up to 80%. an The Alfa harvest device included and equipment two operators for receiving each was detached given an fruit, consisting of a basket and an extension of poly- shade mesh, placed at the base of the trees (Figure 2) and called Mallacán MC (Oliveros et al., 2008). The with tests the presence involved of two rocks operators and slopes and each of up was to given 80%. Tests The evaluation were conducted was conducted in a lot planted in lots with with Colombia coffee variety variety Colombia coffee trees, at 1.6 second x 1.6 and m, first third harvest, harvest, one planted stalk at per 1.5 site, x 1.5 average m, steep slope topography, of 20%. Guayabo Pueblo Bello Negro substation farm. The harvest was carried out on a lot with 2,300 trees planted with full-sun exposure, Colombia variety, first harvest, renewal pruning, with two stalks per site, planted at 2 m between rows and 1 m between trees, with an average slope of 10%. The harness weight is 3.6 kg and the detached fruits are collected with a tray. waist of The the operator, crop conditions are used in each to drive site the were: equipment (Figure 1). was placed Two dry on batteries one side of of 12 the V and trees, 2.2 A, moving placed along in the the harness rows in supported a coordinated at the manner. of the 15W Alfa and equipment, 160 g to detach each collector mature fruits. direct current annual For rainfall electric collecting of engine 2,029 with mm. and in actuator order relative of 21.9 to employs humidity support ☌ and a 82%, averages beater the correct respectively, with of use toothed-blades 20.9 of the and ° C equipment and an annual 80%, (Moreno respectively, rainfall then, et they al of. one temperature and masl, by hour an an with this actuator annual was annual and rainfall and a training humidity temperature a harness. with 2,656 integrated of for annual 1,134 mm.
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