DSpace Communidade:
https://repositorio.ifgoiano.edu.br/handle/prefix/221
2023-01-28T05:03:49ZCOMPORTAMENTO DE CULTIVARES DE SOJA EM RELAÇÃO AO Pratylenchus Brachyrus
https://repositorio.ifgoiano.edu.br/handle/prefix/3180
Título: COMPORTAMENTO DE CULTIVARES DE SOJA EM RELAÇÃO AO Pratylenchus Brachyrus
Autor(es): Sponchiado, Vinícius Zotti
Primeiro Orientador: Cabral, Pablo Diego Silva
Primeiro Membro da Banca: Teixeira, Renato Andrade
Segundo Membro da Banca: Rubio Neto, Aurelio
Abstract: Soybean is the most economically important legume grown in Brazil today, making the
country the world's largest producer of this oilseed. With the expansion of culture, there was
an increase in phytosanitary problems, including the nematode Pratylenchus brachyurus. This
fact has led growers to search for better management technologies, as well as the search for
cultivars that are tolerant and/or resistant to the nematode. The objective of this work was to
identify the behavior of soybean genotypes related to the nematode Pratylenchus brachyurus,
in a greenhouse at the company GDM Genética do Brasil S.A., in the city of Cambé - PR.
Eleven genotypes were evaluated, and the experimental design was completely randomized,
using 10 replications. The greenhouse evaluations were focused on traits: volume, root fresh
mass, reproduction factor, and final population. Sample evaluations and processing were
performed 60 days after inoculation. It was observed that all genotypes have the ability to
multiply P. brachyurus, however the cultivar BMX FOCO had one of the smallest final
populations.
Editor: Instituto Federal Goiano
Tipo: Dissertação2022-09-03T00:00:00ZPÓ DE ROCHA DE NEFELINA - SIENITO COMO FONTE POTÁSSICA: EFEITOS NA SOJA E NOS ATRIBUTOS QUÍMICOS DO SOLO
https://repositorio.ifgoiano.edu.br/handle/prefix/3175
Título: PÓ DE ROCHA DE NEFELINA - SIENITO COMO FONTE POTÁSSICA: EFEITOS NA SOJA E NOS ATRIBUTOS QUÍMICOS DO SOLO
Autor(es): Santos, Renato Aparecido
Primeiro Orientador: Valicheski, Romano Roberto
Abstract: Despite the magnitude of brazilian agribusiness, it is dependent on external inputs, especially
potassium, which 96% of the total consumed comes from other countries. This situation has
high production costs, leading to the need of using alternative fertilizers. In Brazil there are
several types of rocks that can be used for this purpose, but they are little explored. The objective
of this work was to evaluate biometric, physiological and productive aspects of soybean, testing
Nepheline-Syenite (11.0% K2O) and KCl (58.0% K2O) and six doses of K2O (0, 25, 50, 100, 200 and 400 kg ha-1) as potassium sources. The work was carried out in the 2021/2022 harvest
at Bonança Farm, Montes Claros de Goiás-GO, in a randomized block design, with four
replications. In the R1 plants stage, chlorophyll content in the leaves, stem diameter, plant
height, and dry mass of the aerial part were determined. At the time of harvest, the plant stand,
grain moisture, weight of a thousand grain and productivity were determined. Regardless of the
potassium source used, soybeans responded up to 100 kg ha-1 of K2O. The use of NephelineSyenite rock powder provided lower grain moisture at harvest. For the other variables, its application provided similar results to KCl, showing that its use as a K+ in soybeans is
promising.
Editor: Instituto Federal Goiano
Tipo: Dissertação2022-10-27T00:00:00Z“CARRYOVER” DE HERBICIDAS PARA DESTRUIÇÃO DE SOQUEIRAS DE ALGODÃO NA SUCESSÃO ALGODÃO-SOJA
https://repositorio.ifgoiano.edu.br/handle/prefix/2873
Título: “CARRYOVER” DE HERBICIDAS PARA DESTRUIÇÃO DE SOQUEIRAS DE ALGODÃO NA SUCESSÃO ALGODÃO-SOJA
Autor(es): Oliveira, Ricardo Miranda
Primeiro Orientador: Marques, Renata Pereira
Abstract: After the cotton harvest, the crop residues must be destroyed to mitigate the risks of pest and disease proliferation. Among the usual methods, the chemical is widely spread. However, the use of herbicides can cause the “carryover” effect in soil and impair the development and productivity of the subsequent crop. The objective of this work was to evaluate the carryover effect of treatments with herbicides used in the destruction of cotton ratoons in soybean. The work was developed in two parts. Part 1: a 5x4 factorial experiment was installed, with 5 herbicide treatments in 4 sowing periods after herbicide application (0, 3, 6 and 9 days) with four replications. Soybean cultivar 80IX83RSF I2X was sown in 5 L pots placed in a greenhouse. The treatments had the herbicide 2,4-D (1 L.ha-1) associated with glufosinate ammonium (2 L.ha-1); carfentrazone-ethyl (0.05 L.ha-1); flumiclorac-pentyl (0.6 L.ha-1) and saflufenacil (0.07 g.ha-1). In this, visual phytotoxicity, chlorophyll index, plant height, shoot, root and nodules dry mass and the number of nodules were evaluated. Non-parametric (Kruskal-Wallis at 5% probability) and parametric (Dunnett 5%) statistics were used for data analysis. Part 2: yield data for soybean cultivars TMG-4182 and TMG-4377 in 56 plots were analyzed in terms of herbicide applications for destruction of cotton ratoons in succession. The 5% Tukey test was used. It is concluded that the possibilities of negatively impacting the number of nodules is greater when soybean sowing occurs close to the herbicides 2,4-D + ethyl carfentrazone and 2,4-D + glufosinate ammonium salt applications. TMG-4182 and TMG-4377 soybean yields were not influenced by herbicide applications before sowing for the purpose of destroying cotton ratoons.
Editor: Instituto Federal Goiano
Tipo: Dissertação2022-07-22T00:00:00ZCARACTERIZAÇÃO AGRONÔMICA E QUALIDADE DE SEMENTES DE SOJA SOB A APLICAÇÃO DE HERBICIDAS DESSECANTES EM DOIS ESTÁDIOS REPRODUTIVOS
https://repositorio.ifgoiano.edu.br/handle/prefix/2680
Título: CARACTERIZAÇÃO AGRONÔMICA E QUALIDADE DE SEMENTES DE SOJA SOB A APLICAÇÃO DE HERBICIDAS DESSECANTES EM DOIS ESTÁDIOS REPRODUTIVOS
Autor(es): Pereira, Leandro Spíndola
Primeiro Orientador: Zuchi, Jacson
Abstract: The desiccation of the soybean crop must be carried out in a way that does not impact the productivity of the crop and the quality of the seeds. The prohibition of the herbicide paraquate in the desiccation of soybean points to the need for research with alternative desiccant herbicides, however such products must be used in the phenological stage in which the plant presents physiological maturity. Another problem to be faced by producers in soybean desiccation is the shortage in the market of the main substitute for the herbicide paraquate, diquate, so testing mixtures between herbicides, aiming at dose reduction, is also necessary. Thus, the objective was to evaluate the effects on soybean yield, seed physiological quality, and herbicide performance at different reproductive stages. The experiment was carried out on two soybean cultivars, one with an early cycle (67HO107 IPRO), and the other with a medium cycle (74I77RSF IPRO). A 7 x 2 + 1 factorial scheme was used, represented by 7 desiccant herbicides tested, alone or in combination (factor A) with the time of desiccation (factor B) (phenological stage R7.1 and R7.3), in addition to an additional treatment without application of the desiccant (control). In the cultivar 67HO107 IPRO and 74I77RSF IPRO, the performance of desiccant herbicides and the components of soybean production were evaluated. In the cultivar 67HO107 IPRO, the quality of the seeds was also evaluated. Among the herbicides applied, diquate showed the greatest defoliation and phytotoxicity effect, applied alone or in association with carfentrazone-ethyl. The product [Magnesium Chloride + Phosphoric Acid] and ammonium glufosinate alone or associated with carfentrazone-ethyl are presented as an alternative for desiccation. When the herbicide application occurs at the R7.1 stage, there is a reduction in PMG and seedling dry mass in the cultivar 67HO107 IPRO and productivity in the cultivar 74I77RSF IPRO. Studies still need to be carried out in order to quantify the reductions observed in germination and electrical conductivity for the herbicides [magnesium chloride + phosphoric acid], diquate (200 g/ha) + carfentrazone (24 g/ha) and carfentrazone (40 g/ha) at different phenological stages.
Editor: Instituto Federal Goiano
Tipo: Dissertação2022-06-24T00:00:00Z