Variedades de soja (Glycine max (L.)Merrill) associadas a doses de inoculantes

• Autor(a) principal: Santos, Michelly Fernandes dos
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/123456789/14580
• topic: Inoculação; Fixação biológica; Bradyrhizobium; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

Soybeans are the fastest growing crop in the last three decades in the agricultural sector and account for 49% of the area planted to grain in the country. The increase of this crop and the great increase of this productivity is associated to several factors, such as new technologies, soil management and the capacity of the producers to connect all these components. Soybean production could be higher, considering that 40% of the soybean planted in Brazil still suffers from Nitrogen deficiency (N), a nutrient that is required in greater quantity by the soybean crop. The most efficient way of introducing nitrogen fixing bacteria into an agricultural area is through the inoculation of the soybean seed. The objective of this work was to evaluate the production components and different doses of the liquid inoculant in two soybean varieties, the M 8349 IPRO and the M 8808 IPRO adapted to the Northeast region. The experiment was carried out from March to June 2018, in an experimental area belonging to the Agricultural Sciences Center of the Federal University of Paraíba, located in the city of Areia-PB. The experimental design consisted of a factorial 2 x 4 consisting of four dosages of the liquid inoculant, where it was conducted in randomized blocks, with 3 replications totaling 24 plots. The experimental units consisted of four 3m lines, spaced 0.50 meters apart. The useful area was formed by the two central lines, where the data regarding the characteristics evaluated were: plant height (cm), height of insertion of the first pod (cm), number of pods per plant, number of seeds per pod, mass of one thousand seeds (g) and productivity (kg.ha-1). The averages were evaluated using the Tukey test at 1% and 5% probability. Significant effects were found for plant height and one thousand seed mass, which corresponded to the highest inoculant dose (7.5 mL). Concluding that it obtained good conditions for development.