Polysulphate Sugarcane Trial in USA

4.5

Yield Increase
In a trial in Louisiana, USA, Polysulphate fertilizer increased sugarcane yield by 4.5% compared to the conventional grower standard practice.

USDA ARS Sugarcane Research Unit, White Castle, Louisiana, USA
2018

Trail

4.5

Yield Increase

Key Conclusions

Polysulphate fertilizer increased sugarcane yield by 4.5% compared to the conventional grower standard practice.

Objective

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

Trial Details

Trial station

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

Product

Granular Polysulphate

Assessments

Sugar yield

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. The trial tested 2 Polysulphate treatments which were duplicates of the grower standard practice, but with the K portion being made up of 50:50 Polysulphate and KCl, or 100% Polysulphate.

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. The trial tested 2 Polysulphate treatments which were duplicates of the grower standard practice, but with the K portion being made up of 50:50 Polysulphate and KCl, or 100% Polysulphate.

Results

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

 

Polysulphate fertilizer increases sugarcane yield.

Polysulphate fertilizer increases sugarcane yield.

 

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