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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Item Evaluation of agronomic performance of coffee (Coffea arabica L.) cultivars in Gamo and Gofa, southern Ethiopia(Editora UFLA, 2021) Zebire, Degife; Fetena, Seifu; Shara, SaburaEthiopia is identified as a primary centre of Arabica coffee plant origin and genetic diversity. Climatic variations, varietal differences, soil type, mulching, shade, the farming method used, pruning, and other cultural practices are the major factors that affect the development of plants including coffee. Amongst the various factors for having a good yield of coffee is growing of coffee plant in its specific agro-ecologies which has a great contribution to both the life span of the coffee trees and its yield. This experiment was conducted to evaluate the performance of different released and local Arabica coffee varieties across two locations at Gamo and Gofa zones, Southern Ethiopia. The varieties which were used for the study were transplanted in 2014 and laid out in randomized complete block design with three replications across locations. The varieties were planted at a spacing of 2m by 2m between plants and rows, respectively and were evaluated for growth, yield and yield components. The analysis of variance performed for average internodes number, canopy diameter, height up to the primary branch, length of the primary branch, number of branches on the main stem and total height of coffee plant showed significant variations across locations. From the present evaluation, it was noted that the highest Clean Coffee Yield (16.6 and 14.2 quintal per hectare) was scored by coffee cultivars F-59 and 1377A, respectively. Moreover, because of the low quality of coffee delivered to the market, the coffee produced in the Gamo Gofa area (garden coffee) is categorized under forest coffee at the national level. If the quality is improved, the coffee in the area would have its appropriate brand name and the growers and traders can get better returns from their investment. Therefore, those varieties investigated are good candidates for future coffee cup quality analysis.Item Interaction between mealybugs (Pseudococcidae) and coffee plants(Editora UFLA, 2020) Santa-Cecília, Lenira Viana Costa; Silva, Kethullyn HenriqueMealybugs, Planococcus citri (Risso) and Planococcus minor (Maskell) (Hemiptera: Pseudococcidae) are able to colonize several plants, such as coffee (Coffea spp.), where may impair their production. Despite attacking many plants, frequent outbreaks are only found in certain plants. In this work, we tested the hypothesis that P. citri and P. minor show a better performance, i.e., greater longevity and higher reproductive rate, as well as higher survival in a given coffee species and it exists preference for volatiles of certain coffee species. We studied in the laboratory the food preference of these mealybugs through a free choice test and their development and reproduction in Coffea arabica L. cv. Mundo Novo-IAC–379-19 and Coffea canephora (Pierre & Froenher) cv. Conilon 213. The responsiveness of these insects to the volatiles emitted by these coffee plants was analyzed using an olfactometer. The data showed that mealybugs preferred Conilon coffee plants over the Mundo Novo and, despite completing their development in both of them, most of the biological evaluated parameters were affected by the host species. In the olfactometer assays, the volatiles emitted by the coffee plants cv. Mundo Novo and Conilon were equally attractive to these mealybugs. It is concluded that, although there is no discrimination of odors between coffee plants, Mundo Novo and Conilon, both species of mealybugs show food preference for Conilon, having their development and reproduction favored in these plants.Item Um estudo sobre influência inovação da inovação da organizacional sobre o desempenho operacional na indústria do café(Universidade Federal de Lavras, 2016-04) Coti-Zelati, Paolo Edoardo; Zilber, Moisés AriO objetivo deste estudo foi verificar se o construto inovação organizacional influencia, de maneira positiva, o desempenho operacional na indústria do café sob o ponto de vista dos gestores. Para tanto, realizou-se uma pesquisa descritiva de natureza quantitativa com 86 gestores que atuam na indústria do café. Os dados coletados, tratados pela modelagem em equações estruturais, apontaram relação válida entre os constructos inovação organizacional e desempenho operacional. Com base nos resultados obtidos, pode-se verificar que existe relação positiva entre inovação e desempenho operacional, ou seja, a prática de ações ligadas à inovação organizacional tem influência positiva sobre o desempenho operacional na indústria do café. A inovação contribui para a organização ultrapassar as dificuldades de um cenário econômico desfavorável e alcançar o desempenho operacional superior. Por fim, esta investigação buscou contribuir para alargar o conhecimento sobre a indústria do café e encontrar subsídios, no ambiente corporativo, para que se possa compreender os possíveis impactos da inovação sobre o desempenho operacional na indústria cafeicultora.