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Copy link Polysulphate Sugarcane Trial in Colombia
Balboa, Risaralda State 2023
Objective
To evaluate the effect on sugarcane of using Polysulphate as a complementary nutrient source, in particular its effect on biomass at the seedling stage.
Trial Details
Trial station
Balboa, Risaralda State
Crop
Sugarcane
Product
Polysulphate®
Assessments
Shoot and Root biomass, Root: shoot ratio
Treatments
This trial consisted of five treatments: two controls and three Polysulphate doses (0, 1.5, 3 and 6 g/plant) applied 5 days after planting.
- 8 g of 16-7-13
- 1.5 g of Polysulphate
- 3 g of Polysulphate
- 6 g of Polysulphate
- A mixture of soil and compost (1:1)
Treatments 1-4 received a total NPK application of 1.3, 0.6 and 1.1 g/plant from urea, DAP and using Polysulphate as a complementary K source reducing the KCl applied.
Treatments
This trial consisted of five treatments: two controls and three Polysulphate doses (0, 1.5, 3 and 6 g/plant) applied 5 days after planting.
- 8 g of 16-7-13
- 1.5 g of Polysulphate
- 3 g of Polysulphate
- 6 g of Polysulphate
- A mixture of soil and compost (1:1)
Treatments 1-4 received a total NPK application of 1.3, 0.6 and 1.1 g/plant from urea, DAP and using Polysulphate as a complementary K source reducing the KCl applied.
Results
- Polysulphate had a positive effect on sugarcane seedling growth at all application rates up to 6 g/plant.
- Polysulphate significantly increased shoot biomass, doubling it, when compared with the two controls without Polysulphate.
- Supply of K, Ca, Mg and S from Polysulphate reduced root biomass.
- Plants fertilized with Polysulphate had a root:shoot ratio half that of the controls, indicating better biomass partitioning in sugarcane seedlings.
- A recommended dose of 200-300 kg/ha of Polysulphate for the Cauca river valley would improve shoot biomass and sugarcane productivity.
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