Mestrado em Agronomia (EA)
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Navegando Mestrado em Agronomia (EA) por Por Orientador "Calil, Francine Neves"
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Item Crescimento inicial de teca e produtividade de soja sob diferentes adubações em sistema agrossilvicultural(Universidade Federal de Goiás, 2016-03-11) Abreu, Sandro Alex Helrigel; Calil, Francine Neves; http://lattes.cnpq.br/2520537051838618; Calil, Francine Neves; http://lattes.cnpq.br/2520537051838618; Pires, Patrícia Pereira; Chagas, Matheus PeresThe Agroforestry Systems (SAF’s) are models of agricultural exploration that using forest species intercropped with agricultural crops and/or forage with or without animal presence. They have been widely disseminated therefore contribute to the sustainability of the agriculture. This study was developed from an experiment conducted in agrossilvicultural system during the period 2013-2015, the Federal University of Goiás, city of Goiania, GO. The objective of this study was to evaluate the chemical properties of soil, development and productivity of plant components in system integration (Teca and soybean), using different fertilization soil and cropping systems. The experimental design was a randomized block with four replications, in arrangement factorial 4 x 2, consists of four types of fertilization: no application (control); mineral fertilization; application of cattle manure and application of sewage sludge in two cropping systems: single Teca and Teca intercropped with soybeans. The chemical properties of the soil were favored by the application of sewage sludge. There not increase in levels of heavy metals in soil by use of organic waste. The productivity of soybean fertilized with sewage sludge did not differ of the mineral fertilizer, being higher other fertilization. The initial performance of Teca in single cropping was favored by the application of both organic waste. However, when intercropped with soybean, sewage sludge application resulted in higher values of height and diameter at breast height (DBH). The canopy of the tree component of the system was not influenced by the type of fertilizer used, keeping constant the light rate in the different fertilization. The use of sewage sludge is favorable both for the initial development of Teca as plants for soybean yield, being recommended in agrossilviculturals systems.Item Biomassa e volumetria de híbridos de eucalyptus urograndis em sistema de integração lavoura-pecuáriafloresta (ilpf) na região sul de Goiás(Universidade Federal de Goiás, 2015-05-29) Coelho Júnior, José Mauro Lemos Pinto; Borges, Jácomo Divino; http://lattes.cnpq.br/6694312790302062; Calil, Francine Neves; http://lattes.cnpq.br/2520537051838618; Calil, Francine Neves; Pires, Patrícia Pereira; Pacheco, Abílio RodriguesThis study, carried out in a six years stand of Eucalyptus x urograndis old located in Cachoeira Dourada - GO, in an area with soil predominantly Rhodic clayey with a crop-livestock-forest integration system that develops an important role in recovering degraded areas through a sustainable yield model. The objectives were to quantify the compartmentalized tree aboveground biomass; dendrometrically characterize the tree component of the system; Evaluate and test volumetric models for biomass of Eucalyptus urograndis trees. The spacing model adopted in the tree component of crop-livestock-forest integration system (IAFP) of this work, we chose to use three lines densely populated distancing three meters between them, and two meters between plants with fourteen meters between the rows, aiming to the integrated system for production of wood for energy (for six years) sawmill (fourteen) from eucalyptus. Above ground biomass was determined by fitting regression equations with collection of ten individuals classified and divided into dendrometric classes e and compartmentalized by cubed by Smalian method. It was related diameter at breast height (DBH) with height of each plant to determine the hypsometric relations Eucalyptus x urograndis and adjusting the values to seven models as independent variables were the diameter measured at 1.30 m tall (X1) in centimeters, and the total tree height (X2), in meters. To check the relationship between variables, there was simple linear regression with 95% statistical significance, noting the regression coefficient and the distribution of waste and to list the components of the biomass with the volume of each tree Eucalyptus x urograndis. It was also performed linear regression with 95% statistical significance for each of biomass component. Total productivity of eucalyptus biomass obtained from this integrated crop-livestock-forestry system was 144.35 Mg ha-1, resulting in a productivity 114.25 Mg ha-1 (79.14%) of wood. The estimated average height was 23.88 m, originated a total volume of 259.93 m3 h-1 and the average volume of 0.378 m³ per tree, a total gain of 0.063 m³ tree-1 y-1, yielding an annual increase of 43.32 m3 ha-1 yr- 1, thus complying with the farmer’s objectives in using wood component for energy production and sawmill.Item Biomassa acumulada, nutrientes, radiação solar e produtividade em um sistema de integração lavoura-pecuária-floresta (ILPF) no Cerrado central(Universidade Federal de Goiás, 2015-05-29) Guimarães, Luanna Elis; Borges, Jácomo Divino; http://lattes.cnpq.br/6694312790302062; Calil, Francine Neves; http://lattes.cnpq.br/2520537051838618; Calil, Francine Neves; Venturoli, Fábio; Lopes, Vicente GuilhermeOver the time, there was a renewed interest and growth in the adoption of sustainable production systems. Attemps to integrate agricultural activities, livestock and forestry, in order to increase the efficiency of land use, energy, nutrients and labor. This study had as objective to evaluate: a) a three year CLFS, regarding to litter accumulated biomass and nutrients stock; b) biomass and forage productive of Urochloa brizantha (Stapf) Webster; c) to analyze the behavior of photosynthetically active radiation (PAR), microclimate, being all the evaluations done in two different periods (dry and wet season) in a crop livestock forest system (CLFS) in Cachoeira Dourada county, Goiás. The evaluations were performed in CLFS formed by plants of E. urograndis in the following spacing: 4 (3 X 3 m) + 22 m brachiaria forage crop (U. brizantha (Stapf) Webster.).In a) it was determined six blocks with two treatments - one between plants and between rows of eucalyptus. In each block 10 samples were taken for each treatment. To collect the accumulated litter, a wooden frame (0,25 m x 0,25 m) was used. After drying the material was separated in the following components: leaf, bark/branches and miscellaneous and total weight was obtained. After that, the samples were conducted to lab to analyze nutrients content. The results were 17.9 Mg ha-¹ of litter accumulated biomass. There was no difference among the sampled sites (between rows and between plants) for both biomass and the concentration of nutrients. It can be assured that the largest accumulated biomass was obtained in the dry season, and the most representative accumulated biomass was the leaf component. The macronutrient with the highest accumulation in the evaluated components was calcium (Ca) and micronutrient was the iron (Fe). In B) forage sampling was done at 01, 04, 08 and 12 meters, for each block (total six blocks) using two transects of 75 meters equidistant. A wooden frame (0,25m²) was used (0,25m²) and all above ground fodder was removed. After that, dry matter (DM) content was determined and also the calculation of the forage production. The results showed DM differences in wet season. The analysis of variance carried out (p> 0.05) was noted that every meter that the sample was advancing towards the center of the pasture, increased 58% in productivity. It is possible to conclude that the higher productivity occurs in wet season. Highest production (DM) occurred in samples collected at 8 and 12 meters away from the hedgerow. In C) to collect the photon flux density - PFD (μmol.m-2.s-1) two quanta sensors were used (LI-250 A, Li-color Inc., USA), in photosynthetically active radiation - PAR. Data collection was done in each hour, starting at 9:45 and ending at 17:45, and also collected the control to full sun, and other collections in: (1 in the center of the row of trees, 2 – at 5 m of hedgerow 3 –at 10m of hedgerow 4- at 15m of hedgerow ), in each point 4 replications were obtained. A mini-weather station (Windmate WM-300) was used for measuring, in each hour, temperature, wind speed and relative humidity. The results showed that there were differences among the chosen points, with point 10 and 15 meters with most receiving range (PAR). The weather evaluation showed long retaining humidity in the environment, and with mild temperatures, besides the wind force of the breaking by eucalyptus trees present in CLFS. In conclusion, CLFS shows a differential microclimate and also, establish patterns of PAR increase, in this study, 56% for each meter towards to forage center.