Revista Brasileira de Engenharia Agrícola e Ambiental
URI permanente para esta coleçãohttps://sbicafe.ufv.br/handle/123456789/10362
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Resultados da Pesquisa
Item Experimental model for optimizing mechanized mountain coffee harvesting(Departamento de Engenharia Agrícola - UFCG, 2024-08-30) Souza, Felipe G.; Teixeira, Mauri M.; Villibor, Geice P.; Furtado Júnior, Marconi R.; Cecon, Paulo R.Coffee holds significant economic and social importance for Brazil, being one of the main commodities in global agribusiness. Coffee growers, particularly those cultivating arabica coffee, face challenges due to labor shortages and high associated costs during manual harvesting. This study aimed to evaluate the operational performance and efficiency of a self-propelled coffee harvester prototype in terraced mountain areas. To assess harvesting losses, efficiency, and operational capacity, the experimental model traversed the designated area entirely. Fruit stripping was performed over the collection system at five different terrain incline angles (8°, 17°, 25°, 30°, and 38°). Harvesting loss was determined by the ratio of the mass of fruits retained by the collection system to the total mass of harvested fruits. For comparison, the efficiency and operational capacity of two workers performing manual fruit harvesting were also measured. Terrain slope did not significantly impact harvesting losses or operational capacity. The highest operational capacity was 0.11 ha h⁻¹, achieved at a 17° slope. The average operational efficiency was 66.2%.Item Growth of seedlings and young plants of coffee in composts of textile industry residues(Departamento de Engenharia Agrícola - UFCG, 2019) Neiva Júnior, Eudes; França, André C.; Grazziotti, Paulo H.; Porto, Douglas W. B.; Araújo, Fausto H. V.; Leal, Felipe D. S.The final destination of solid industrial waste is one of the main environmental problems currently facing, due to its potential for contamination. With the evolution of environmental policy and awareness, the proper destination of these wastes is stimulated, seeking new technologies to fulfil the demand for the products generated. One of the solutions to this environmental problem is to use these residues as fertilizers in agriculture. The objective of this study was to evaluate the use of toxic textile residues as a substrate component of coffee seedlings and as fertilizer in the initial growth of coffee plants. The study was divided into three experiments: production of seedlings, initial growth of potted plants and in the field. In the production of seedlings, the treatments consisted of different proportions of organic compost residues from the textile industry: 0, 4, 8, 16 and 32% and a conventional treatment of seedling production. In pots and in the field, the same treatments were used with organic compound, and a conventional planting treatment. In the three experiments, plant growth and nutritional analyses were performed. The conventional treatment provided better development of the seedlings and the potted and field coffee plants for most of the evaluated parameters. The treatments between 8 and 16% of organic compost showed an acceptable development of coffee plants, demonstrating their potential as fertilizer.