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Copy link Banana Trial with Polysulphate® in Brazil
Increase in vigor
Juquiá, São Paulo state, Brazil 2017
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 0-0-14
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:
| Treatment | KCl | Polysulphate |
|---|---|---|
| % | % | |
| T1: Control | 0 | 0 |
| T2 | 100 | 0 |
| T3 | 80 | 20 |
| T4 | 60 | 40 |
| T5 | 50 | 50 |
| T6 | 40 | 60 |
| T7 | 20 | 80 |
| T8 | 0 | 100 |
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:
| Treatment | KCl | Polysulphate |
|---|---|---|
| % | % | |
| T1: Control | 0 | 0 |
| T2 | 100 | 0 |
| T3 | 80 | 20 |
| T4 | 60 | 40 |
| T5 | 50 | 50 |
| T6 | 40 | 60 |
| T7 | 20 | 80 |
| T8 | 0 | 100 |
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%.
* From research funded by the International Potash Institute www.ipipotash.org
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