Repositório Digital do IFFAR

Navegando por Autor "Junior, José Maria Tupinamba da Silva"

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    Aplicação de fungicida em diferentes estádios fenológicos na cultura do milho safrinha
    (Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, 2021) Vezzosi, Eduardo Filipin; Nora, Douglas Dalla; Nora, Douglas Dalla; Junior, José Maria Tupinamba da Silva; Santos, Railson Schreinert dos
    The objective of this work was to evaluate the efficiency and number of fungicide applications at different phenological stages on off-season corn performance, with emphasis on yield. The experiment was conducted from February 18, 2020 to August 4, 2020, in a commercial field, where plots 30 meters long by 28 meters wide were demarcated, each plot 30 meters long with 8 rows of planting, with spacing of 0.5 m, totaling 120 m2. Fungicide applications were carried out at phenological stages V8; VT; R2; V8 + VT; VT + R2 and V8 + VT + R2. In the control treatment, no fungicide application was carried out. The product used was the fungicide containing Fluxapiroxade and Piraclostrobin, at a dose of 350 ml.ha-1 . After harvesting and weighing it can be verified that the plots with a fungicide application in the vegetative stages V8 and VT were the most productive and most profitable in relation to the control where no application was made. Plots where two and three fungicide applications were made did not obtain satisfactory production or profitability.
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    Manejo de adubação fosfatada na produtividade da cultura da soja
    (Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, 2021) Scalcon, Ricardo de Mello; Nora, Douglas Dalla; Nora, Douglas Dalla; Junior, José Maria Tupinamba da Silva; Silva, Fernando Felisberto da
    Soybean (Glycine max (L.) is an of the most important crops for the world economy. Its grains are widely used by the agribusiness (production of vegetable oil and animal feed), chemical and food industry, as well as an alternative source of biofuel. Brazil is the largest producer in the world, but there is an productivity gap to be filled in. The content of phosphorus (P) available in the soil has been reported as a more generalized nutritional limitation to agricultural production. This study aimed was to evaluate the productivity of the soybean crop, submitted to different forms of application of phosphate fertilizer TOP-PHOS® (3% de N; 28% de P; 17% de Ca e 7% de S). Treatments constituted in the follow application forms: Witness (without P), P in the line and P to throw, in cultivar BMX ZEUS®. In the visual evaluation performed at 24 days after emergence, where the P was placed in the line close to the seeds (7 to 10 cm deep), there was a greater structuring of roots (volume and length) and aerial part, proving greater productivity between treatments. The treatment witnesses showing weakened plants, such as which had the lowest result in grain yield. Although the management with P at haul overcome in productivity in relation to the control, it did not achieve the same result as the management with P in the sowing line. Thus, because it is a little mobile element in the soil, and highly demanded by the soybean crop, the highest productivity is achieved when the phosphorus is close as roots.