03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
Navegar
Item Algodão colorido BRS verde sob diferentes doses de cloreto de mepiquat(2019) Cordeiro, José Allysson; Alves, Gibran da Silva; http://lattes.cnpq.br/7278351291260092; http://lattes.cnpq.br/9845501805224496Colored cotton has great social and economic importance for the Northeast region. It is important socially to favor the permanence of the man in the field, reducing the rural and economic exodus, due to the greater appreciation of the naturally colored fiber, around 39 to 78% more than the white fiber, leading to greater profitability. The objective of this study was to evaluate the behavior of the BRS Verde colored cotton cultivar to the use of different doses of mepiquat chloride. The experimentwas conducted in a greenhouse between August and December 2018 at UFRPE / UAST, PE. The statistical design was completely randomized, where the treatments resulted in the application of 5 doses of growth regulator based on mepiquat chloride -0,0; 0.07; 0.14; 0.21; 0.28 Lha-1 and 4 replicates. The obtained data were submitted to analysis of variance and when verified the significant effect they were submitted to the analysis of polinomial regression through the Sivar software. Variations of plant height, distance between nodes, number of nodes, stem diameter, leaf area, dry shoot mass, root dry weight and total dry mass, height of first flower bud, height of first flower insertion , number of flowers, number of apples, number of beaks per plant, beet mass, fiber production and seed cotton production. The use of mepiquat chloride in BRS Verde colored cotton provided similar behavior in the plants that received application of the product, however when compared to the control plants there was a difference between them. The productive parameters of the BRS Green cotton are reduced with the use of mepiquat chloride from the dose of 0.07 L.ha-1 and tend to decrease simultaneously as the doses of the growth regulator are intensified. With regard to the analyzes of phytomass of shoot and root, with the application of mepiquat chloride in the BRS Verde cotton cultivar, the average values obtained were obtained, resulting in larger masses for the treatments used.Item Doses de polímero hidroretentor no algodão BRS Topázio(2019) Alves, Josias Jordão Andrade; Alves, Gibran da Silva; http://lattes.cnpq.br/7278351291260092; http://lattes.cnpq.br/2263876107895716The cultivation of colored fiber cotton is done mainly by small producers in the states of Pernambuco, Bahia, Paraíba and Rio Grande do Norte. New technologies to help tolerate long periods of drought and development of new drought tolerant cultivars, economically viable techniques that promote increased productivity and reduce losses in the agricultural sector should be priorities around the world. The use of hydro-retaining polymers is one of the most recent technologies used for water supply and maintenance of plants. The objective of this study was to evaluate the response of BRS topaz to the use of different doses of water-repellent polymer. The experiment was carried out in greenhouse from October 2018 to February 2019 at UFRPE / UAST, PE. The statistical design was a completely randomized design with 5 doses of hydro-polymer (0, 30, 60, 90 and 120 g pot-1) and 4 replicates. Plant height, stem diameter, leaf area per plant, internodes length, number of nodes, dry mass of the plant, root dry mass and total dry mass, number of apples per plant, number of beaks per plant, production of beetles per plant, production of seed per plant and production of fiber per plant. The increase in the value of the hydrogel doses resulted in an increase in the values of emergence speed index, plant height, stem diameter, internode length, leaf area and number of apples, the dose being 120 g pot-1, which provided better values for these variables in the BRS Topázio greenhouse.Item Doses e épocas de aplicação de cloreto de mepiquat em algodão colorido brs topázio(2019) Sá, Guilherme Augusto dos Santos; Alves, Gibran da Silva; http://lattes.cnpq.br/7278351291260092; http://lattes.cnpq.br/4840879791678518Colored cotton is a genetic material still little cultivated in Brazil, having advantages such as the color of the fiber, which remains until the final product, so it is not necessary to use chemicals to dye it and promoting textile production with less environmental impact. However, it is a material that, in general, has low fiber quality and low productivity. It is up to the research to work on the improvement of the characteristics of the referred genetic material and that consequently would stimulate the increase of its cultivation. The objective of this study was to evaluate the growth and development of BRS Topázio cotton as a function of the application of the mepiquat chloride growth regulator at different doses and times. The experiment was conducted in a greenhouse at the Federal Rural University of Pernambuco, Serra Talhada Academic Unit (UFRPE-UAST). A completely randomized design was used in a 5x2 factorial arrangement, with 3 replications, 5 doses of mepiquat chloride (0.0; 0.07; 0.14; 0.21; 0.28 L ha-1) were applied at two different times (30 and 60 days after the emergency). Plant height, internode length, stem diameter, leaf area, number of nodes, number of bolls, number of flowers, number of apples, insertion height of the first flower bud, insertion height of the first flower were studied. , cottonseed mass, fiber mass, stone mass, aerial fresh matter mass, aerial dry matter mass, root fresh mass, root dry matter mass, total fresh matter mass and total dry matter mass. For data analysis we used the statistical software Sisvar 5.6, in which the results were submitted to analysis of variance and regression analysis. The variables, plant height, leaf area, stem diameter, node number, internode length, number of flowers, apple number, number of bolls, shoot fresh matter, root fresh matter, total fresh matter, shoot dry matter, total dry matter, root dry matter, fiber production, stone production and stone cotton production, responded to the effects corresponding to different doses and application times. The variables insertion height of the first flower and the insertion height of the first flower bud were not significantly influenced by mepiquat chloride. BRS Topázio cotton presents higher sensitivity to mepiquat chloride when applied at 30 DAE;