TEDE Coleção: Mestrado em Agronomia
http://bdtd.unoeste.br:8080/jspui/handle/tede/504
Mestrado em Agronomia2024-03-28T15:26:35ZRespostas da batata-doce à inoculação de micorriza e rizobactéria
http://bdtd.unoeste.br:8080/jspui/handle/jspui/1535
Título: Respostas da batata-doce à inoculação de micorriza e rizobactéria
Autor: Tolosa, Anne Roefero
Primeiro orientador: Santos, Ana Claudia Pacheco
Abstract: Considered an important crop and food base in developing countries, sweet potato [Ipomoea potatoes (L.)] is a rustic crop because it does not require high technologies, in addition to its low production cost. Its yield can be affected by abiotic factors such as water and nutritional deficiencies, and as an alternative, new sustainable technologies have been adopted that bring greater productivity and at the same time reduce environmental impacts, including inoculation with microorganisms. Therefore, this study aimed to evaluate biometric responses (leaf area and aerial and root dry mass), and biochemical (photosynthetic pigments and secondary compounds in leaves and beta carotene content in roots) in sweet potato plants inoculated with mycorrhizal fungus arbuscular - FMA (Rhizophagos clarus) and rhizobacteria (Bacillus subtilis), in isolation. Additionally, parameters of biological activity in the soil were evaluated. The experimental design was completely randomized, with 3 treatments (control, inoculation with mycorrhiza and inoculation with rhizobacteria) and 10 replications. Plants inoculated with AMF showed increases in the content of chlorophylls, carotenoids and total phenols in leaves, as well as in dehydrogenase enzyme activity and basal soil respiration. However, there was a reduction in the dry mass of adventitious and tuberous roots. The inoculation of plants with rhizobacteria did not result in differences either in the dry mass of the aerial and root parts, as well as in the biochemical parameters evaluated, with only an increase in the activity of the dehydrogenase enzyme and in the basal respiration of the soil.
Instituição: Universidade do Oeste Paulista
Tipo do documento: Dissertação2021-09-01T00:00:00ZDesempenho agronômico, adaptabilidade e estabilidade de genótipos de batata-doce no Oeste Paulista
http://bdtd.unoeste.br:8080/jspui/handle/jspui/1531
Título: Desempenho agronômico, adaptabilidade e estabilidade de genótipos de batata-doce no Oeste Paulista
Autor: Perrud, Amanda Carvalho
Primeiro orientador: Zeist, André Ricardo
Abstract: The state of São Paulo is the second largest producer of sweet potatoes (140 thousand tons), with the western region of São Paulo being the main producing region. In this region, despite the considerable economic and social relevance of the culture, there is a predominance of outdated genotypes, causing low yields. Thus, to strengthen sweet potato cultivation in the west of São Paulo, an important step is to assess the potential of new genotypes. Considering the above information, the objective was to evaluate the agronomic performance, adaptability and stability of sweet potato genotypes in planting dates in the west of São Paulo. The experiments were installed in the municipalities of Presidente Prudente and Álvares Machado, on six planting dates: 09/21/2019; 01/31/2020; 04/24/2020; 09/01/2020; 10/30/2020; 12/28/2020, evaluating the cultivars: BRS Rubissol, BRS Amélia, Beauregard, Princesa, Brazlândia Branca, Brazlândia Rosada, Coquinho, SCS367 Favorita, SCS368 Ituporanga, SCS369 Águas Negras, SCS370 Luiza, SCS371 Katiy, SCS372 Marina, IAPAR 69, INIA Arapey and the UZBD 08, UZBD 01, UZBD 02, UZBD 06 (Canadian) and UZBD 07 (Ligeirinha) accesses. A block experimental design with randomized treatments was adopted. Total root production, commercial root production, number of commercial roots, average mass of commercial roots were evaluated; root length and diameter, root dry mass, surface defects and insect resistance. The analysis of phenotypic stability and adaptability was performed by the methods of Eberhart and Russell (1966) and Centroid, using the statistical program Genes. It was verified that the white pulp and cream genotypes UZBD 06 and INIA Arapey; the orange and yellow pulp cultivars IAPAR 69 and SCS 372 Marina and the purple pulp genotypes UZBD 01 and 02 are promising for sweet potato cultivation in Oeste Paulista. The Centroid method indicated the UZBD 06 (Canadian) genotype and the IAPAR 69 and SCS 372 Marina cultivars with broad adaptability (adapted to all evaluated environments). The methodology described by Eberhart and Russell (1966) did not identify any genotype with broad adaptation. The different evaluation methods used are contemplated and increase the reliability of the recommendation.
Instituição: Universidade do Oeste Paulista
Tipo do documento: Dissertação2021-08-20T00:00:00ZProduto baseado em mananoligossacarídeo na indução de tolerância ao déficit hídrico e desenvolvimento vegetativo da soja
http://bdtd.unoeste.br:8080/jspui/handle/jspui/1530
Título: Produto baseado em mananoligossacarídeo na indução de tolerância ao déficit hídrico e desenvolvimento vegetativo da soja
Autor: Souza, Renan Luiz Barros de
Primeiro orientador: Araujo, Fabio Fernando de
Abstract: The soybean culture holds great significance in Brazilian agriculture, with Brazil being the world's largest soybean producer. In this context, biofertilizers produced through microbial fermentation have emerged as a source containing organic active principles that promote plant development and induce natural defense mechanisms. The objective of this study was to evaluate a product based on mannanoligosaccharide (PBM) concerning its effects on soybean growth and tolerance to water deficit. The experiment was conducted in a greenhouse using soybean plants, with the following treatments: T1 - Control, T2 - Salicylic Acid, T3 - Mineral Solution, T4 - PBM (0.5 L/ha), and T5 - PBM (4.0 L/ha), in a 2x4 factorial design (50% and 100% evapotranspiration) over a 77-day cultivation period. The treatments were applied directly to the soil at the time of soybean sowing. Biometric and photosynthetic evaluations were performed during soybean cultivation, and soil microbial activity was also assessed. In soybean cultivation without water deficit, PBM provided benefits such as increased aboveground growth, nodulation, photosynthesis, and nutrient accumulation. However, direct application of the product to the soil resulted in reduced root growth. Under water deficit conditions, the use of PBM did not mitigate the effects of stress on the plants. PBM applied to the soil has the potential to induce biochemical changes in the plant, with the lower dose of the product showing better performance in this study.
Instituição: Universidade do Oeste Paulista
Tipo do documento: Dissertação2023-11-26T00:00:00ZAdubação nitrogenada antecipada no algodoeiro em solo arenoso
http://bdtd.unoeste.br:8080/jspui/handle/jspui/1511
Título: Adubação nitrogenada antecipada no algodoeiro em solo arenoso
Autor: Silva, Gustavo Ricardo Aguiar
Primeiro orientador: Echer, Fábio Rafael
Abstract: One of the major challenges in agriculture is to improve the efficiency of nitrogen use by crops, because its rapid transformation easily exposes it to losses by volatilization and leaching. Thus, the objective was to evaluate the effect of nitrogen fertilization management (sources and times of application) on nitrogen (N) content in soil and plant, productivity and quality of cotton fibers in a sandy soil. The experiment was conducted at the Experimental Farm of UNOESTE, in Presidente Bernardes-SP, in the 2020/21 and 2021/22 season. The soil of the area is sandy in texture. The experimental design was in randomized blocks with five replications. The plots were 7 meters long and 3.6 meters wide and composed of the following treatments: 1 - Ammonium nitrate applied to launch at 20, 40 and 60 days after emergence (DAE) (AN); 2 - Conventional urea applied to pitch at 20, 40 and 60 DAE (U); 3 - Conventional urea applied 100% to the 30 DAE in an incorporated form (U 30 DAE); 4 - Controlled release urea with 70% of the rate applied in the sowing of incorporated form and 30% with conventional urea at 50 DAE (CRU/U); 5 - Controlled release urea with 70% of the rate applied in the sowing of incorporated form and 30% at 50 DAE (CRU 70/30); 6 - Controlled release urea applied 100% in the sowing of incorporated form (CRU 100 I); 7 - Controlled release urea applied broadcasted 100% at sowing (CRU 100 B). In the 2020/21 season there was no effect of the treatments on the variables analyzed, in the 2021/22 crop, fiber yield, number of weeds and average weight of weeds were higher in treatments with CRU/U, CRU 70/30 and CRU 100 B. The accumulation of productivity per node in the 2021/22 crop shows that the effect of treatments began to be evidenced from the 17th fruit branch. In the same season, the N content in the leaf, leaf area index (LAI) and fiber quality, except for the short fiber index, showed no difference among treatments. The index of short fibers decreased (2021/22) in treatments with CRU 100 L and U 30 DAE. The productivity of the treatments was higher in the second season, mainly in treatments with CRU 100 B, CRU 70/30, CRU/U and NA. The managements with CRU 100 B, CRU 70/30 and CRU/U increase ammonia contents in the most superficial layers (0-40 cm) and reduce N mobility in nitric form in the deepest layers (0.4 – 0.8 m). In smaller cycles of cultivation (2020/21), a single application in sowing with ULC brings benefits to cotton productivity without affecting fiber quality. In larger cycles (2021/22), the best fertilization strategies are with CRU/U, CRU 70/30 and CRU 100 B.
Instituição: Universidade do Oeste Paulista
Tipo do documento: Dissertação2023-02-08T00:00:00Z