03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
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Resultados da Pesquisa
Item Performance de mudas de espécies ocorrentes na caatinga sob estratégias de manejo: subsídios para recuperação de áreas degradadas(2022-06-03) Gomes, Francielly Leite; Souza, Luciana Sandra Bastos de; http://lattes.cnpq.br/1186468548787818; http://lattes.cnpq.br/9531466442630621The intense degradation of the Caatinga associated with its susceptibility to climate change puts the Biome's biodiversity at risk and brings important reflections on the strategies used to mitigate these effects. Urgent measures need to be taken in order to understand the mechanisms that allow the establishment of different species in the environment and the use of techniques that are more conducive to actions to restore the environment. For the Caatinga, information of this nature is scarce. Based on this, this work sought to analyze the performance of different native species submitted to different management strategies with low implementation costs, which can be replicated in other similar areas. The present work proposed to apply nucleation techniques combined with different soil management strategies to recover a degraded portion of the caatinga. For this, an experiment was carried out at the Academic Unit of Serra Talhada, from 11 March to 2 May of 2022. Four treatments related to soil management were adopted: T1 = control, T2 = soil and gel, T3 = soil and compost and T4 = gel and compound and five species: Anadenanthera colubrina (Vell.) Brenan, Cratylia mollis Mart. ex Benth., Libidibia ferrea (Mart. ex Tul.) L. P. Queiroz, Handroanthus impetiginosus (Mart. ex DC.) Mattos e Sesbania virgata (Cav.) Poir., using the nucleation technique, arranged in a randomized block design with 3 replications. At 8-day intervals, monitoring was carried out to analyze the biometric parameters of the seedlings: plant height (ALT), number of leaves (NF), collar diameter (DC), canopy projection (directions: NorthSouth and East-West ) and survival. Our results showed that: 1) The use of organic compost 8 favored the number of leaves and the diameter of the collar of the species, but did not influence the height and projection of the crown. 2) The use of hydrogel only favored the foliar increment of Angico and Pau ferro species, but did not favor the development of biometric aspects for the other species. 3) The use of the nucleation technique proved to be efficient for the development of plants and increase in biodiversity in degraded areas.Item Uso do hidrogel e da fibra de coco para o crescimento das espécies utilizadas em reflorestamento(2021-03-12) Silva, Michel André de Lima e; Silva, Luzia Ferreira da; http://lattes.cnpq.br/6320449537171549The use of alternative techniques for planting in reforestation areas in the northeastern semiarid is essential, as the region is very peculiar with low precipitation, high temperatures and low relative humidity. The practices, to increase the humidity in the planting, are still scarce, mainly with the use of hydrogel and coconut fiber. Thus, the objective of this work was to verify whether hydrogel and coconut fiber contribute to the survival and growth of native seedlings in the field. The study was carried out on a rural property close to the Itaparica dam and São Francisco river, in the municipality of Petrolândia, State of Pernambuco. Fifteen individuals of each species were selected: braúna, catingueira, aroeira do sertão, monkfish and umbuzeiro.The design used in randomized blocks, with five replications and three treatments: control, coconut fiber and hydrogel, totaling 75 experimental units. The data were subjected to analysis of variance and the means compared by Tukey's test at 5% probability and simple linear regression with the variables studied. Data collection performed every 15 days in the field, for a period of 90 days, in which plant height, crown and neck diameter were evaluated. The species responded well, with a high survival rate (93,33%). The best species in height growth: catingueira (69,30% and 59,32%) and umbuzeiro (43,86% and 60,54%), respectivament, in hydrogel and coconut fiber treatments. These results are related to good moisture retention in the soil, which favored the growth of the seedlings. The catingueira had the largest canopy diameter in the three treatments, with hydrogel being the best treatment (31,53%) and the worst for umbuzeiro (5,75%) and monkfish (4,92%). In the variable neck diameter, umbuzeiro had the best result (7,25%) in coconut fiber and in hydrogel in catingueira (6,99%). The catingueira and umbuzeiro seedlings showed better growth in the studied variables, which guarantees a good survival of the species.Item Armazenamento de sementes de angico de bezerro (Piptadenia moniliformis Benth.)(2019) Silva, Elania Freire da; Pinto, Monalisa Alves Diniz da Silva Camargo; http://lattes.cnpq.br/0446410743186066; http://lattes.cnpq.br/6644267105942189