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Copy link Polysulphate Broccoli Trial in France
13
Kervignac, France 2016
13
Key Conclusions
Polysulphate increased broccoli yield by 13% compared to the control, increasing yield by 1.75 mt/ha (0.78 ton/acre), based on 25,000 plants/ha (approximately 10,000 plants/acre).
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
Product
Polysulphate Granular
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 (134 lbs/A).
- Polysulphate applied 15 and 40 days after planting (split application) at a rate of 150 kg/ha (134 lbs/A) each (total 300 kg/ha or 268 lbs/A).
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 (134 lbs/A).
- Polysulphate applied 15 and 40 days after planting (split application) at a rate of 150 kg/ha (134 lbs/A) each (total 300 kg/ha or 268 lbs/A).
Results
- The split Polysulphate application (2 × 150 kg/ha (134 lbs/A)) 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 a 1.75 mt/ha (0.78 ton/acre) yield increase based on 25,000 plants/ha (approximately 10,000 plants/acre).
- The average head size increased from 534 g (1.17 lbs) in the control to 604 g (1.33 lbs) 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.
Other Interesting Trials
Polysulphate on Alfalfa
Vésigneul-sur-Marne, France, 2020
12
Polysulphate Granular
A naturally plant-available, gradual release fertilizer with S, K, Mg and Ca
