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Copy link Polysulphate Durian Trial in Malaysia
27.6
Pahang, Malaysia 2021
27.6
Key Conclusions
Polysulphate fertilizer increased durian whole fruit weight by 27.6%, increased the fat content by 20.7%, and increased the volatile sulfur compounds in the fruit, giving the durian fruit a stronger, and highly desirable, onion-sulfur odor.
Objective
To evaluate the effect of Polysulphate on the changes in physicochemical characteristics and total volatile sulfur compounds of Musang King durians (Durio zibethinus).
Trial Details
Trial station
Pahang, Malaysia
Crop
Durian
Product
Granular Polysulphate
Assessments
Fruit weight, fruit firmness, fruit composition, and volatile flavor compounds
Treatments
The treatments consisted of trees where Polysulphate was applied at 4 kg/tree, and the control where no Polysulphate was applied. Each treatment had 6 biological replicates.
- The trees were fertilized with 3 kg/tree of NPK 17-17-17 (K2O from sulfate of potash) in April and in June 2020.
- NPK 12-17-2 (K2O from sulfate of potash) was applied in July, August, and October 2020 at the rate of 2 kg/tree.
- Following the appearance of flower buds, the treatment trees received Polysulphate at the rate of 4 kg/tree.
Treatments
The treatments consisted of trees where Polysulphate was applied at 4 kg/tree, and the control where no Polysulphate was applied. Each treatment had 6 biological replicates.
- The trees were fertilized with 3 kg/tree of NPK 17-17-17 (K2O from sulfate of potash) in April and in June 2020.
- NPK 12-17-2 (K2O from sulfate of potash) was applied in July, August, and October 2020 at the rate of 2 kg/tree.
- Following the appearance of flower buds, the treatment trees received Polysulphate at the rate of 4 kg/tree.
Results
- The whole fruit weight of durian fruit from the Polysulphate treated trees increased significantly by 27.6%.
- Durian fruit from Polysulphate treated trees showed significantly firmer pulp compared to those from the control.
- The durian fruit from Polysulphate treated trees exhibited significantly higher fat content (a characteristic consumers find highly desirable) and lower carbohydrate content compared to the control durians.
- Polysulphate application increased the volatile sulfur compounds (VSCs) in the fruit, which includes diethyl disulfide and diethyl trisulfide. This gives a stronger onion-sulfur odor, which consumers find highly desirable.
Polysulphate fertilizer increased durian fruit weight by 27.6%.
Polysulphate fertilizer increased durian volatile sulfur compounds, improving the aroma.
Polysulphate fertilizer increased durian fruit fat content by 20.7%.
From research funded by the International Potash Institute www.ipipotash.org
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