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Copy link Potato Polysulphate Trial on Sandy Loam Soil
4.5
Yield increase
Polysulphate boosts potato yield and quality for French fry producers in Canada
Manitoba, Canada 2021
4.5
Key Conclusions
- All three treatments including Polysulphate had the highest yields and lowest tuber glucose concentration.
- Polysulphate applied at 350 lb/A + grower standard practice N, P, and K increased total tuber yield by 16 cwt/A over the grower standard practice (GSP) alone and had the lightest fry color of all evaluated treatments
- Tuber glucose concentration decreased by 0.034 percentage points, and mean fry color decreased by 0.28 rating units compared to the grower standard practice (GSP).
Objective
To investigate the effect of Polysulphate as a nutrient source for Russet Burbank potatoes, and the influence of Polysulphate on French fry characteristics after 150 days of tuber storage.
Trial Details
Trial station
Manitoba, Canada
Crop
Potato
Product
Polysulphate®
Assessments
Yield and French fry quality after 150 days in storage
Treatments
- All treatments received 200 lb N, 145 lb P2O5, and 250 lb K2O per acre.
- The grower standard practice (GSP) included urea, MOP, MAP, and ammonium sulfate.
- Calcium was supplied as gypsum in treatments 5 & 7
- Potassium magnesium sulfate was used to provide Mg to treatments 6 & 7.
- Treatments were evaluated in a randomized complete block design with four replications.
*Only treatments 1 and 8 are included in the summary.
Treatments
- All treatments received 200 lb N, 145 lb P2O5, and 250 lb K2O per acre.
- The grower standard practice (GSP) included urea, MOP, MAP, and ammonium sulfate.
- Calcium was supplied as gypsum in treatments 5 & 7
- Potassium magnesium sulfate was used to provide Mg to treatments 6 & 7.
- Treatments were evaluated in a randomized complete block design with four replications.
*Only treatments 1 and 8 are included in the summary.
Results
The four-in-one natural fertilizer
