TCC - Bacharelado em Agronomia (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2928
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Item Desenvolvimento do sorgo forrageiro (Sorghum bicolor(L.) Moench) submetido a diferentes dosagens de adubação com manipueira(2018) Cruz, Aloísio dos Santos; Simplício, Josimar Bento; Vieira, Maurício Luiz de Mello; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/1876691945804390In the Semi-arid region of the Northeast, goat breeding and sheep farming are relevant activities in socioeconomic aspects for rural families. However, the inadequate management of chemical fertilization in this region has added serious environmental problems, and consequently, forage production has been hampered by misapplication of mineral fertilization in production systems. Thus, the objective of this research was to evaluate the response of two genotypes of forage sorghum submitted to different doses of manipueira.The experiment was carried out in the Statistical Unit of Serra Talhada, installed in randomized blocks, in a 4x2x4 factorial scheme, composed of four blocks of two sorghum cultivars and four doses of manipueira (0.0, 12.0, 24.0 and 48, 0 m3ha-1), totaling 32 experimental units. The evaluated characteristics were stem diameter (DC); plant height (AP); number of live leaves (NFV); number of dead leaves (NFM); weight of the green mass (PMV) and weight of the dry mass (PMS). In the interactions obtained by the ANOVA of the data, it can be observed that, of the growth parameters evaluated were significantly altered by the use of manipueira doses, for these variables we observed a quadratic behavior as a function of plant height (AP), the evaluation period (mL / pot) for the two sorghum cultivars IPA 2502 and BRS Ponta Negra, at the height of the IPA 2502 plant the dose of 168.34 mL / pot provided a maximum height of 67cm at 62.51 days , and for BRS Ponta Negra it reached a maximum height of 85 cm, with a dosage of 104.76 mL / pot at 68.65 days, in Figure 2 (a) and (b). For the variable diameter of the stem (DC) Figures 3 (a)and (b), the dose of 168.06 mL / vessel provided the IPA 2502 maximum diameter of 11.82 mm at 49 days, while for the BRS Tip The dose of 101.71 mL / pot provided a maximum diameter of 13.69 mm at 64.29 days. There was no influence of the different dosagesof manipulation for the number of live and dead leaves, total green mass and total dry mass of the leaves. cultivars IPA 2502 and BRS Ponta Negra. The use of manipueira in the conditions established in this research did not promote increases in the production of sorghum forage, however, further evaluations are necessary with new studies on the influence of this fertilizer, since the plants were conditioned to water stress.Item Trocas gasosas, massa fresca e qualidade de água no cultivo do gergelim associando cinzas do bagaço de cana-de-açúcar e água salina(2022-05-25) Ramos, David Gleidson Moreira; Lira, Raquele Mendes de; http://lattes.cnpq.br/7303795378184706; http://lattes.cnpq.br/3746280840837783Irrigated perimeters are intended to minimize problems related to drought. In the Northeast, in line with the availability of water, some factors affect the quality of irrigation, such as salinization, which commonly occurs in water from wells located in sedimentary soil in the semi-arid region. Due to the climate and the characteristics of the aquifers, brackish or saline waters affect not only the physical and chemical parts of the soil but also the growth and development of the plant, its nutritional and physiological aspects. Therefore, it is necessary to introduce innovative management techniques aiming to maximize agricultural production and simultaneously reduce the effects of salinization. However, the use of organometallic fertilizers such as vegetable ash can reduce acidity and provide better soil fertility. Sesame is considered a salinitysensitive crop, on the other hand, the climate of the semi-arid region favors its production, making it a source of income for farmers. In this sense, the objective was to evaluate the effects of different dosages of ash from sugarcane bagasse and irrigation with saline water, evaluating gas exchange, dry matter, and water quality of sesame in the semi-arid region of Pernambuco. The study was conducted at the Federal Rural University of Pernambuco at the Serra Talhada Academic Unit (UFRPE/UAST), using the experimental design in randomized blocks in a factorial scheme ((5 x 2) +2), with 4 replications totaling 48 experimental units. The treatments consisted of five doses of sugarcane bagasse ash (0, 30, 60, 90 and 120 g.plant-1), two water qualities (A1= Public supply water (0.5 dS m -1); A2 = Artesian well water (4.1 dS m-1) and two additional controls (T1 = Recommended fertilization + public supply water; and T2 = Recommended fertilization + artesian well water. The experimental unit was represented by nine plants, but for physiological analysis, only one plant was used. The net assimilation of CO2(A), stomatal conductance (gs), the internal concentration of CO2 (Ci), and transpiration (E) were analyzed, and the readings were carried out 70 days after sowing. In addition, the water use efficiency (USA) and carboxylation efficiency were determined. At 90 DAS, the harvest was carried out and the fresh plant matter was measured. pH and electrical conductivity of the soil saturation extract. The data were submitted for analysis of variance by site F at 1 and 5% probability. Due to the rains during the experiment, it was not possible to state whether the ash dosages could affect the effects of salinization on gas exchange in sesame. The highest ECs were found in soil irrigated with brackish water and the use of mineral fertilizer provided a higher yield of fresh matter than treatments that received only ash from sugarcane bagasse as a source of fertilization.Item Uso de bioestimulante no capim-corrente submetido ao estresse hídrico(2020-08-17) Souza, José Victor da Silva; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/6836501799019536The use of biostimulants in plants promotes activities similar to phytohormones. Thus, the objective was to evaluate the influence of a biostimulant on the growth and accumulation of phytomass in plants of urocloa grass (Urochloa mosambicensis), submitted to water stress conditions. The test was conducted from September to December 2019, in the experimental area of the Study Group on Forage (GEFOR), of the Federal Rural University of Pernambuco, Academic Unit of Serra Talhada (UFRPE-UAST). The design used was in randomized blocks, in a 4x2 factorial scheme, with four levels of water replacement, based on the culture evapotranspiration (ETc): 25%.ETc, 50%.ETc, 75%.ETc and 100%.ETc and two levels of a commercial Acadian® biostimulant (0 and 8 ml per liter), with four replications, totaling 32 experimental units, represented by vessels. Urocloa grass growth was monitored every seven days during a growth cycle. The structural characteristics were evaluated: plant height and width, stem length and diameter, number of: total tillers, fully expanded leaves, expanding leaves and senescent leaves. The leaf area was estimated, nondestructively, based on the linear dimensions of the length and width of the leaf blade. At the end of the cycle, the fresh and dry mass of the morphological components and the total aerial part were determined. The evaluation data were subjected to the normality test, homoscedasticity and analysis of variance by Test F. Since F was significant, the treatment means were compared using the Tukey test at 5% probability. The results showed that for most of the morphometric variables there was no interaction between the levels of biostimulant and the ETc levels. In the absence of the biostimulant, the largest stem diameter was obtained, except for 100% .ETc. Urocloa grass has a moderate tolerance to water stress.