Abstract
The response of strawberry (Fragaria × ananassa) to different rates of preplant sulfur (S) fertilization was assessed in two studies in Florida. The preplant S rates were 0, 25, 50, 125, 200, and 275 lb/acre and elemental S was used as the nutrient source. Preplant S application did not affect plant canopy diameters or shoot dry biomass. However, leaf greenness increased with preplant S. The foliar concentrations of S and magnesium (Mg) also increased when the S rate reached 50 lb/acre, whereas the application of S rates of 125 lb/acre or higher increased the concentration of manganese (Mn) in the leaves. Total marketable fruit weight increased by 10% with 50 lb/acre of S in comparison with the non-treated control. There were no further yield increases with S rates higher than 50 lb/acre. Preplant S rates higher than 50 lb/acre did not improve strawberry marketable fruit weight. A similar response was found for strawberry root dry biomass at the end of the season.
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