Mestrado em Agronomia (EA)
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Navegando Mestrado em Agronomia (EA) por Por Orientador "Borges, Jácomo Divino"
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Item Monitoramento e manejo de insetos pragas em cultivos de tomate para processamento industrial(Universidade Federal de Goiás, 2011-10-28) Camargo, Aline Carneiro; Czepak, Cecília; http://lattes.cnpq.br/7900255230781858; Borges, Jácomo Divino; http://lattes.cnpq.br/6694312790302062; Borges, Jácomo Divino; Czepak, Cecília; Borges, Lino CarlosThe culture of tomato (Solanum lycopersicum) is subject to a high incidence of pests, and these can occur from sowing to fruit harvest. This study was conducted in order to monitor the field population dynamics of arthropod pests and their predators and obtain subsidies that define alternatives for the management of areas cultivated with creeping tomato produced for industry. Initially, two studies in the areas of cash crops were performed at different times Abadia de Goiás and Palminópolis, two districts of the state of Goiás, which consisted of weekly surveys to quantify population densities of arthropods present in the culture. There was a constant incidence of whiteflies throughout the crop cycle, the low population of beneficial arthropods and from the analysis of applications made with the population indices obtained, it could be observed use of unnecessary applications of pesticides for pest insect species control. Later, there was a test installed in an experimental area with tomato cultivation in Goiânia-GO another district, and aimed to test an alternative form of arthropod pests control, whose treatment consisted of evaluating two different forms of management, standard management, performed in conventional way with the use of pre-established applications, and integrated pest management (IPM). In the standard treatment were performed eleven applications of pesticides to control insect pests, and IPM were performed in four applications, as these were based on population levels of pests in the area of cultivation. In the IPM treatment was observed that the cost of production was 18% lower compared to standard treatment, without significant losses in productivity of tomatoes. The use of integrated pest management proved to be an important tool for controlling tomato pests, to be technically efficient and economically viable.Item Determinação da viabilidade e do vigor em sementes de seringueira(Universidade Federal de Goiás, 2012-06-15) Oliveira, Augusto Pedroso de; Pereira, Ailton Vitor; Borges, Jácomo Divino; http://lattes.cnpq.br/6694312790302062; Pereira, Ailton Vitor; Pereira, Elainy Botelho Carvalho; Souza, Eli Regina Barboza de; Borges, Jácomo DivinoTo produce rubber tree (Hevea brasiliensis) seedlings in nursery, the collection is limited by the short fall of seeds, which have a rapid loss of their germinal power and no guarantee their viability. This forces the nurseryman to acquire a much larger seeds than really necessary. With the adoption of standards for the quality of seed, the minimum parameters established 70% viability being suggested for such confirmation the tetrazolium test, according Rules for Seed Analysis (RSA) and/or a practical test done from the visual analysis of the seed endosperm color named in this work of "visual test". Despite tetrazolium test be scientifically based, its realization is made improbable by many financial and temporal reasons. Thus, the visual test points as a low-cost alternative, high reliability and immediate result, since both tests are considered trusted, but only the test tetrazolium test is recognized. The subject proposed to verify the credibility of the "visual test" legitimizing or not its use in the field. The field is composed of rubber seed, formed with the adult clone GT1. The seeds were homogenised and stored on two conditions: braided polypropylene bags and transparent plastic bags with minimum thickness of 0.02 mm microdrill at top. In each bag, in three treatments were placed ten kilograms of seed and these were stored in natural conditions of temperature and humidity (25° C ± 5 °C). Was pulled randomly a bag of seeds of rubber tree of each storage type, to zero and fourteen days of storing lots. The tests: visual, sprouting in sand and tetrazolium, besides the determination of the degree of moisture. Tetrazolium and visual tests were highly correlated, and the visual test results before had as the best way to analyze the seeds, for its significant correlation in General with the tetrazolium test, and simplicity in its execution and instant result, which gives good lot projection nurseryman to be acquired by him.