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Copy link Polysulphate Broccoli Trial in France
13
Yield Increase
In a trial in France, Polysulphate applied to broccoli increased the yield by 13% while also increasing the average broccoli head size.
Kervignac, France 2016
13
Key Conclusions
Polysulphate increased broccoli yield by 13% compared to the control, increasing yield by 1.75 mt/ha, based on 25,000 plants/ha.
Objective
To investigate the effect of the application of single and split applications of Polysulphate on the yield of broccoli (Brassica oleracea var. italica).
Trial Details
Trial station
Kervignac, France
Crop
Broccoli
Product
Granular Polysulphate
Assessments
Yield, and nutrient contents in the head.
Treatments
This field trial consisted of three treatments in four replicates:
- Farmer’s fertilizer practice (control).
- Polysulphate applied 15 days after planting at a rate of 150 kg/ha.
- Polysulphate applied 15 and 40 days after planting (split application) at a rate of 150 kg/ha each (total 300 kg/ha).
Treatments
This field trial consisted of three treatments in four replicates:
- Farmer’s fertilizer practice (control).
- Polysulphate applied 15 days after planting at a rate of 150 kg/ha.
- Polysulphate applied 15 and 40 days after planting (split application) at a rate of 150 kg/ha each (total 300 kg/ha).
Results
- The split Polysulphate application (2 × 150 kg/ha) resulted in the best response. The single application had no effect on the crop.
- The yield of the split Polysulphate treatment improved by 13% over the control, this means 1.75 mt/ha yield increase based on 25,000 plants/ha.
- The average head size increased from 534 g in the control to 604 g with the two Polysulphate applications.
- Potassium, magnesium, and calcium content in the heads with the split Polysulphate application increased by 5%, 1.7% and 23% respectively compared to the control.
Adding Polysulphate fertilizer increased broccoli yield by 13%.
Polysulphate increases Ca content in broccoli heads.
Polysulphate increases Mg content in broccoli heads.
Polysulphate increases K content in broccoli heads.
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