The study aims to reduce mechanical damage to the buds and billets of seedcane, evaluating the effect of the synchronization between the speed of roller feed train and of the harvester in terms of harvested seedcane quality. A conventional harvester was improved through the introduction of hydraulic oil flow valves, who controlled the speed of the rollers using data gathered by 5 speed sensors and a data acquisition system. The trials were carried out with seeds of the CTC 9 and CTC 14 varieties under treatments of conventional and synchronized harvesting. For the CTC 9 variety the amount of inviable buds decreased from 15.8% to 12.7%. In case of the CTC 14 variety the amount of inviable buds decreased from 10.4% to 8.3%. The amount of optimum and regular billets increased by 8.2% from 65.9 % to 74.1%. In general, the changes proposed, linked to the synchronism of speed, have shown promise in increasing the quality of sugarcane seeds obtained by mechanical harvesting.
With the increasing trend of mechanized harvesting of green sugarcane the trash residue needs to be used. Leaving large amounts of trash remaining on the field can sometimes lead to problems such as delay of sprouting of tillers, increased levels of leafhopper infestation and difficulty of tillage operation. Windrowing of trash after harvesting can minimize these problems. To eliminate the operation of trash windrowing and to facilitate the trash decomposition, the Sugarcane Technology Center, CTC (Centro de Tecnologia Canavieira), Brazil developed a trash shredder system for a primary extractor of John Deere chopper sugarcane harvester. Using rotating knives all vegetable material passing through the primary extractor is chopped, thereby reducing the particle size. After some adjustments, preliminary tests were carried out to prove the efficiency of chopping and sugarcane cleaning. The machine produces a much smaller trash particle size than conventional harvesters. The system shows promise in shredding trash either for use at the mill or for dispersion on the field.
With the trend of increased mechanical harvesting of sugarcane without burning, the trash emerges as a likely residue to be used as a fuel. This practice results in a large amount of material remaining in the field. As an alternative it has been used for gathering is the adoption and operation of windrowing and baling this trash after harvest. Seeking to reduce the granulometry of the trash in the primary extractor harvester, to minimize the cost of transporting the bales and the elimination of shredding process in the industry, a shredder system of the trash was designed. A shredder system was assembled on the primary extractor of harvester of chopped sugarcane, which through rotating blades, will triturate all the vegetable material that passes into the primary extractor, reducing the particle size and leaving this material deposited on the soil, to be later transformed into high density bales. The system has shown promise in the shredding of trash, because the resulting characteristics of the trash indicated much smaller granulometry than is normally allowed by conventional harvesters.
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