TCC Engenharia Agronômica

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https://repositorio.ifal.edu.br/handle/123456789/41

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Navegando TCC Engenharia Agronômica por Assunto "Água salina"

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    Produtividade e crescimento de genótipos de palma forrageira irrigados com água salobra
    (INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2022-03-04) Farias, Mayara França; Silva, Jose Madson da; http://lattes.cnpq.br/5749870599305506; Silva, Randerson Cavalcante; http://lattes.cnpq.br/7477067848979919; Gouveia Neto, Gilberto da Cruz
    Forage cactus constitutes an important alternative for forage support for the semiarid Northeastern region of Brazil. Accordingly, a worthy mentioning technology to increase its productivity is the suplementar irrigation. This academic work aimed to study the growing and production features of carmine mealybug resistant cactus genotypes, subjected to varying depths of brackish water suplementar irrigation. Experiments procedures were conducted using water collected from the Poço Doce ́s site, located in the minicipality of Piranhas. In terms of methodology, the tests were carried out on a randomized blocks basis with 4 replications in the split-plot scheme, with the plot consisting of five saline water replacement depths: L1 = 0 mm/month, 7.5 mm/month, 15 mm/month, 22, 5 mm/month and 30 mm/month. These aforementioned replacement depths were divided into three monthly applications, and the subportion was composed of the two varieties of forage cactus (Orelha de Elefante Mexicana and Miúda). Using drip tapes to situate the irrigation system, the following characteristics were evaluated: final plants quantity (plants/m2); number of rackets per plant; height and width of plants (m); primary, secondary and tertiary rackets length (cm), width (cm), thickness (mm), and green mass (kg/racket); dry matter percentage and productivity (Mg/ha). We found that optimal forage cactus growth and productivity were achieved for irrigation depth of 15 mm/month. Last, but not least, we concluded that the Orelha de Elefante Mexicana variety showed better growth and productivity characteristics than the Miúda one, and in addition, it presented small percentages of dry matter regardless of the amount of irrigation.
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    Seleção de progênies de tomateiro (Solanum lycopersicum l.) tolerantes à salinidade
    (INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2023-01-27) Nascimento, Thamara Pereira do; Costa, Kleyton Danilo da Silva; https://orcid.org/0000-0003-4631-3240; http://lattes.cnpq.br/3562128215536520; Silva, Michelangelo de Oliveira; http://lattes.cnpq.br/5831953262176334; Prates, Fabiano Barbosa de Souza; http://lattes.cnpq.br/6530012770891274
    Tomato is one of the most important vegetable crops in the world, representing a significant source of employment and income, mainly in Brazilian Northeast, where risks of soil salinity constitute limiting factors for good crop development. Breeding programs for selection of progenies that tolerate this abiotic stress are essential. Then, the objective of this work is to select salinity-tolerant tomato progenies. For the experiment, 400 plants of F3 generation, 400 plants of F2 generation, 60 F1 plants and 60 plants of each parent, that is, the IPA-7 and Yoshimatsu cultivars, totaling 980 plants; for the second experiment, 400 plants of F2 generation, 60 plants of F1 and 60 plants of each parent (Yoshimatsu and IPA-7), totaling 580 plants, at a high level of salinity, in four replications were evaluated. The experiment was carried out in pots for 30 days, with evaluations taking place during 20 and 30 days after transplanting. On evaluation for the first experiment, morethan 50% of generations at 20 days demonstrated that they are tolerant, already at 30 days only the Yoshimatsu genitor showed tolerance, where others were not tolerantg, with variations in notes. For evaluation of the second experiment at 30 days after transplanting, as in the first one, only Yoshimatsu genitor was tolerant and others demonstrated more than 70% of generations not tolerant to saline level. The selection of tomato progenies is indicated from 30 days after transplanting. Through the F2 and F3 generations, dominance of non-tolerant phenotype was observed, indicating that possible salinity tolerance genes are recessive. Through the inheritance study that indicated the action of another recessive gene combined with experimental conditions, it was not possible to select salinity-tolerant progenies.