Sugarcane

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Where

USA

Crop

Sugarcane (Saccharum officinarum)

Soil Type

Sandy, silt-loam soil

When

Planting: Second ratoon

Harvest: October, 2018

Measurements

Sugar yield

Polysulphate increased sugarcane yield 4.5% over conventional grower standard practice.

Location

USDA ARS Sugarcane Research Unit, White Castle, Louisiana, USA

Objective

To evaluate Polysulphate as a K fertilizer source for sugarcane grown in sandy, silt-loam soils in southern Louisiana, USA.

Treatments

Grower standard practice consisted of 135 kg N/ha in the form of urea, 45 kg P2O5/ha in the form of DAP and 135 kg K2O/ha in the form of KCl. There were two Polysulphate treatments which were duplicates of the grower standard practice , but with the K portion being made up of 50:50 Polysulphate & KCl, or 100% Polysulphate.

Results

  • Supplying 50% of the K dose as Polysulphate increased the sugarcane yield by 504 kg/ha (4.5%) over conventional grower standard practice.

 

Polysulphate increased sugarcane yield 4.5% over conventional grower standard practice.