Banana Trial with Polysulphate in Brazil

25

Increase in vigor
Polysulphate increased the vigor and crop productivity of banana, even in high fertility soils.

Juquiá, São Paulo state, Brazil
2017

Trail

25

Increase in vigor

Key Conclusions

Polysulphate increased the vigor of banana by up to 25%, even in high fertility soils.

Objective

To evaluate the effect substituting KCl fertilizer with Polysulphate as a source of K has on the yield and quality of banana (Musa acuminata), Cavendish Subgroup.

Trial Details

Trial station

Juquiá, São Paulo state, Brazil

Crop

Banana

Product

Granular Polysulphate

Assessments

Yield, vigor of bunches, and diameter of stems.

Treatments

This randomized block trial consisted of 4 replicates with 8 treatments. Different blends of KCl and Polysulphate were tested to supply 360 kg/ha K2O:

 

TreatmentKClPolysulphate
%%
T1: Control00
T21000
T38020
T46040
T55050
T64060
T72080
T80100

 

The fertilizers were applied onto the soil surface at 2 times: first in November 2016; second in January 2017. 100 kg/ha P2O5 as MAP and 250 kg/ha N as ammonium nitrate were applied at the same time in all treatments.

Treatments

This randomized block trial consisted of 4 replicates with 8 treatments. Different blends of KCl and Polysulphate were tested to supply 360 kg/ha K2O:

 

TreatmentKClPolysulphate
%%
T1: Control00
T21000
T38020
T46040
T55050
T64060
T72080
T80100

 

The fertilizers were applied onto the soil surface at 2 times: first in November 2016; second in January 2017. 100 kg/ha P2O5 as MAP and 250 kg/ha N as ammonium nitrate were applied at the same time in all treatments.

Results

  • Polysulphate increased the vigor of bunches and slightly increased the diameter of stems.
  • Partial replacement of KCl with Polysulphate increased crop productivity.
  • The KCl:Polysulphate blends with 50% to 60% Polysulphate led to the greatest increases in yield and vigor, even in high fertility soils.

 

Polysulphate fertilizer increased banana yield by 11% and vigor by 25%

Polysulphate fertilizer increased banana yield by 11% and vigor by 25%. 

 

* From research funded by the International Potash Institute www.ipipotash.org.

 

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