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Copy link Polysulphate Tomato Trial in Colombia
5
Popayán, Cauca State 2023
5
Objective
To evaluate the effect on tomato yield of using Polysulphate as a complementary nutrient source.
Trial Details
Trial station
Popayán, Cauca State
Crop
Tomato
Product
Polysulphate®
Assessments
Total yield
Treatments
This trial consisted of six rows with two treatments:
- No Polysulphate
- 60 g of Polysulphate/plant, equivalent to 1.5 tons/ha, applied 46 days after planting.
Both treatments received a total NPK application of 200,
200 and 400 kg/ha, from 10-30-10, 10-20-20, 16-16-16. Treatment 2 used Polysulphate as a complementary K source that reduced the KCl application. The whole crop received soil fertilization at 10, 46, 55 and 85 days after planting, plus fertigation every two weeks.
Treatments
This trial consisted of six rows with two treatments:
- No Polysulphate
- 60 g of Polysulphate/plant, equivalent to 1.5 tons/ha, applied 46 days after planting.
Both treatments received a total NPK application of 200,
200 and 400 kg/ha, from 10-30-10, 10-20-20, 16-16-16. Treatment 2 used Polysulphate as a complementary K source that reduced the KCl application. The whole crop received soil fertilization at 10, 46, 55 and 85 days after planting, plus fertigation every two weeks.
Results
- Polysulphate increased tomato yield by 5% compared with the control.
- Addition of K, Ca, Mg and S from Polysulphate improved the fruit setting and appearance.
- Polysulphate application resulted in a high reduction of blossom-end rot, common in the region.
- A dose of 30-60 g/plant of Polysulphate is recommended to increase tomato productivity and improve fruit quality.
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