This poster was presented at the
"XXXVII CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO 2019"
"Intencificação sustentável em sistemas de produção"
From the 21st to the 26th July 2019.
This poster summarizes research to evaluate the effect of polyhalite as a sulfur (S) source, compared to phosphogypsum, in sugarcane ratoon.
Sugarcane is largely cultivated in dystrophic latosols and argisols, with poor levels of nutrients. Despite corrections and fertilizations carried out during planting operations with the nutrient, sulfur deficiency in the ratoons is very common.
Under these conditions the most commonly applied source is the phosphogypsum at a minimum rate of 1 t ha-1 due to the operational difficulty of application in smaller quantities, besides that, an extra agricultural operation is needed, since it is impossible to mix with the fertilizers.
The poster highlights that polyhalite is a viable fertilizer source of sulfur for sugarcane ratoons, suitable for phosphogypsum replacement, even when applied at higher rates.
By Fabio Vale and Danilo Ramos Sério
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