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FLORAÇÃO DE PITAYA NO CERRADO COM A APLICAÇÃO DE REGULADORES DE CRESCIMENTO NO FINAL DA ENTRESSAFRA

2026-03-02T23:47:46Z

Título: FLORAÇÃO DE PITAYA NO CERRADO COM A APLICAÇÃO DE REGULADORES DE CRESCIMENTO NO FINAL DA ENTRESSAFRA Autor(es): Carvalho, Alexson Pantaleão Machado Primeiro Orientador: Sousa, Cleiton Mateus Abstract: Flowering of pitaya in the Cerrado (Brazilian Savannah) biome with the application of growth regulators at the end of the off-season. Advisor: Prof. Dr. Sousa, Cleiton Mateus. The cultivation of pitaya has increased in Brazil. However, , which causes wide price fluctuation in the market. The cultivated varieties have period of long days, and production concentrates from November to May. There are not yet strategies to scale up its production in Brazil. In some countries, artificial lighting supplementation is used to scale up production. On the other hand, the use of growth regulators allows to control flowering under non-inductive natural conditions. Thus, understanding the action of gibberellin on pitaya flowering can significantly contribute to develop management strategies to scale pitaya fruiting in the Cerrado (Brazilian Savannah) of Goiás State, Brazil. Assim, avaliou-se os efeitos da aplicação de GA3 e paclobutrazol no final da entressafra sobre a floração e a frutificação da pitaya. Therefore, the effects of applying GA3 and paclobutrazol at the end of the off-season on pitaya flowering and fruiting were evaluated. Paclobutrazol completely inhibited pitaya fruiting, showing a prolonged residual effect, as the plants did not flower in the harvest period. Regarding the use of GA3, new studies are needed on the form, timing, and application dose to obtain better responses in scaling pitaya fruiting. Keywords: Dragon fruit. Growth regulators. Seasonality. Editor: Instituto Federal Goiano Tipo: Dissertação

SENSORIAMENTO REMOTO ORBITAL E ANÁLISE DE TENDÊNCIA NAS MUDANÇAS DA COBERTURA E USO DA TERRA NO VALE DO SÃO PATRÍCIO AO LONGO DE QUATRO DÉCADAS

2026-02-27T14:04:34Z

Título: SENSORIAMENTO REMOTO ORBITAL E ANÁLISE DE TENDÊNCIA NAS MUDANÇAS DA COBERTURA E USO DA TERRA NO VALE DO SÃO PATRÍCIO AO LONGO DE QUATRO DÉCADAS Autor(es): Lemes Filho, Mauro Primeiro Orientador: Silva, Jhon Lennon Bezerra da Primeiro Membro da Banca: Silva, Jhon Lennon Bezerra da Segundo Membro da Banca: Carvalho, Ailton Alves de Terceiro Membro da Banca: Silva, Marcos Vinicius da Abstract: The Brazilian Cerrado (Savanna) has undergone intense transformations in recent decades due to climate change, agricultural expansion, and socioeconomic pressures, which have triggered high levels of deforestation, resulting in significant changes in the land cover and in land use in the region. In this context, the Vale do São Patrício, a Cerrado region in Goiás State, Brazil, stands out for its agricultural and environmental importance, encompassing twenty-four municipalities, making it a strategic area for multitemporal analysis and monitoring of surface changes. This research aimed to evaluate the spatiotemporal dynamics of land cover in the Vale do São Patrício from 1985 to 2023 through orbital remote sensing. This study used the MapBiomas geospatial data product, including the 9.0 land cover data collection, based on Landsat satellite images with a spatial resolution of 30 m. Automatic image processing was carried out on the Google Earth Engine platform through cloud-based digital processing combined with the Random Forest algorithm. Annual thematic maps of surface changes over time were produced, allowing quantitative pixel-by-pixel extraction from the Land Use and Land Cover (LULC) product. The analyses included descriptive and dispersion statistics, the application of a nonparametric test, and the Mann-Kendall temporal trend test at a 5% significance level. Vegetation indices were also calculated to assess the spatiotemporal distribution patterns and quantitative variability of natural vegetation cover and agricultural areas. R (v.4.4.0) and QGIS (v.3.36) software were also applied for trend analysis and thematic maps production, respectively. The results showed a significant upward trend in agricultural-related classes, along with a reduction in native forests, with an average annual loss of 974.74 ha throughout the temporal analysis. This trend became particularly evident from the 1990s onward, reflecting the intensification of the agricultural occupation process. The Mann-Kendall test confirmed a significant upward trend (p-value<0.05) for agricultural areas, with annual gains of 1,046.52 ha for soybean and 2,345.31 ha for sugarcane. On the other hand, no significant trend was identified in pasture areas, showing signs of stability. Both Normalized Difference Vegetation Index (NDVI) and Soil-Adjusted Vegetation Index (SAVI) revealed the predominance of agricultural areas and the fragmentation of forest areas. SAVI was more sensitive for detecting bodies of water and areas of exposed soil. The intense transformation of the landscape in the Vale do São Patrício was driven by agricultural expansion at the expense of native vegetation. This dynamic intensifies environmental impacts, showing the area's increasing vulnerability and the need for sustainable territorial planning strategies. Remote sensing monitoring is needed to support the development of public policies focus on regional sustainability. Editor: Instituto Federal Goiano Tipo: Dissertação

EFEITO DE BIOINSUMOS NA EMERGÊNCIA E CRESCIMENTO INICIAL DE ESPÉCIES NATIVAS DO CERRADO E SOJA

2026-02-20T19:04:21Z

Título: EFEITO DE BIOINSUMOS NA EMERGÊNCIA E CRESCIMENTO INICIAL DE ESPÉCIES NATIVAS DO CERRADO E SOJA Autor(es): Godoi, Jefferson Ricardo Oliveira Primeiro Orientador: Selari, Priscila Jane Romano Gonçalves Abstract: The Brazilian Cerrado (Savanna), recognized as one of the world’s major biodiversity hotspots, is facing increasing pressures due to deforestation, intensive agricultural expansion, and the indiscriminate use of chemical inputs. In this context, the search for sustainable alternatives in agriculture has become urgent; the microbial bioinputs are emerging as a promising strategy, promoting productivity, environmental conservation, and reducing negative impacts on ecosystems. This paper investigated the effects of inoculating four bacterial isolates, Priestia aryabhattai, Bacillus subtilis, Bacillus amyloliquefaciens, and Bacillus pumilus, on the germination and early development of three plant species of ecological and economic relevance, namely Dipteryx alata (baru), Pterodon emarginatus (sucupira), and Glycine max (soybean). The experiments were carried out under controlled greenhouse conditions at the Goiano Federal Institute, Ceres Campus, Goiás State, Brazil, . A completely randomized design was adopted, with five treatments (four inoculants and one control) and ten replicates of ten seeds each one, totaling one hundred seeds per treatment. The emergence rate, plant height, number of leaves and leaflets, root length, shoot length, root volume, root dry mass, shoot dry mass, and stem diameter variables were evaluated. Data were analyzed applying the Shapiro-Wilk normality test and analysis of variance (ANOVA), followed by Tukey’s test at 5% significance level. The B. pumilus and B. amyloliquefaciens bacteria promoted increases in root dry mass in baru, while P. aryabhattai significantly increased root length in this species. Inoculating P. aryabhattai in sucupira led to substantially greater increases in root volume, root length, plant height, and stem diameter than the other treatments. Additionally, stem diameter was significantly higher when inoculated with B. subtilis. Soybean showed an increase in root length with P. aryabhattai inoculation and an increase in the number of leaves with B. subtilis inoculation. Stem diameter in soybean was higher in all bacterial inoculation treatments compared to the control. The highest emergence rates in. native species were achieved with B. subtilis inoculation, while the highest rate in soybean was observed with P. aryabhattai. Although responses varied according to plant species and microorganism type, P. aryabhattai stood out by promoting increases in all tested plant species, and sucupira showed the greatest response to this bacterium. These results indicate that the association between plants and biological inputs is a promising strategy for enhancing the early growth of agricultural crops and native species in the Brazilian Cerrado, which may contribute to more sustainable agricultural practices. Beyond scientific advancement, this paper also highlights the value of Brazilian Cerrado sociobiodiversity by exploring native species that remain poorly studied, yet are essential for ecosystem conservation and for supporting income generation in local communities. Editor: Instituto Federal Goiano Tipo: Dissertação

PROPOSTA DER PADRONIZAÇÃO DE PROCEDIMENTOS NO LICENCIAMENTO AMBIENTAL: DESENVOLVIMENTO DE CHECKLIST PATA A AGRICULTURA IRRIGADA E BARRAMENTO NO VALE DO SÃO PATRÍCIO, GOIÁS.

2026-01-13T21:06:03Z

Título: PROPOSTA DER PADRONIZAÇÃO DE PROCEDIMENTOS NO LICENCIAMENTO AMBIENTAL: DESENVOLVIMENTO DE CHECKLIST PATA A AGRICULTURA IRRIGADA E BARRAMENTO NO VALE DO SÃO PATRÍCIO, GOIÁS. Autor(es): Pires, Cheila Aparecida Primeiro Orientador: Salomão, Leandro Caixeta Abstract: Environmental licensing is one of the main instruments of the National Environmental Policy (Law No. 6.938/1981), aimed at preventing, mitigating, and compensating impacts arising from potentially polluting activities. The decentralization of this process in Brazil is regulated by Complementary Law No. 140/2011, transferring the authority to municipalities to license local impact ventures, particularly in the agricultural sector. In the São Patrício Valley region, Goiás State, Brazil, this measure has become especially relevant due to the irrigated agriculture expansion and the dam construction, activities that demand intensive use of water resources and entail significant environmental risks. This paper aimed to analyze the environmental licensing procedures adopted by decentralized municipalities in the region — Itapaci, Ceres, Rialma, Nova Glória, Rianápolis, Rubiataba, and São Patrício — and to propose a standardized checklist for irrigated agriculture and dam construction. The methodology used was qualitative and descriptive, colleting data through questionnaires applied exclusively to the technicians responsible for issuing the licenses, complemented by on-site visits to the Municipal Environmental Secretariats. The data were processed by content analysis techniques, with triangulation among documental, normative, and some empirical information. The results highlighted the heterogeneity of municipal administrative structures, the lack of standardization in procedures, and the insufficiency of human and technological resources, factors that compromise the effectiveness of decentralization. The lack of uniformity in the requirements and the weakness in post-license monitoring create legal uncertainty and reduce the capacity to prevent environmental damage, although the municipality's proximity to local demands favors greater speed in the process. In this context, this paper proposes the adoption of a checklist as a harmonization tool, able to support municipal technicians in the process analysis, without disregarding local specificities. It is concluded that the decentralization of environmental licensing in the São Patrício Valley presents important advances but still requires investments in technical training, technological infrastructure, and mechanisms of normative standardization. The developed checklist by this paper offers a practical tool to strengthen municipal environmental management, ensure greater legal certainty, and promote sustainability in the use of regional water resources. Editor: Instituto Federal Goiano Tipo: Dissertação