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Copy link Agromaster® Trial in Germany with Potato
24
IASP, Berge, Germany 2022
24
Key Conclusions
A single application of Agromaster®, compared to the grower’s practice consisting of 2 applications of CAN, yielded 25% more tubers larger than 55mm, and produced a 6.6% higher marketable yield (tubers larger 35mm). Agromaster®’s controlled release of nitrogen increased the nitrogen use efficiency, ultimately producing a positive return on investment (ROI) of an extra 146 €/ha.
Objective
To compare the efficiency of a single application of Agromaster®, a Controlled Release Fertilizer from ICL, when compared to the grower’s usual practice of 2 applications of conventional N fertilizer (as CAN).
Trial Details
Trial station
IASP, Berge, Germany
Crop
Potato
Product
Agromaster®
Assessments
Marketable yield and NUE
Treatments
This trial evaluated 3 different fertilizer treatments for Ware Potatoes (var. Augusta). All 3 treatments received the same level of P, K, Ca, Mg and S. The control received no additional nitrogen, while the standard grower’s practice and Agromaster® treatments received nitrogen fertilizer as shown in the table below. The trial was set up using a randomized block design with 4 repetitions.
| Treatment | Product | Total-N mineral, kg/ha | Timing |
|---|---|---|---|
| Grower Practice | CAN 27-0-0 | 108 | Before planting |
| CAN 27-0-0 | 72 | Mid-June | |
| Agromaster®* | Agromaster®* 35-0-0, 2-3M, 60% coated N | 180 | Before planting |
| * Agromaster® was made by combining coated urea and CAN. All treatments received the same level of P, K, Ca, Mg and S. |
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Treatments
This trial evaluated 3 different fertilizer treatments for Ware Potatoes (var. Augusta). All 3 treatments received the same level of P, K, Ca, Mg and S. The control received no additional nitrogen, while the standard grower’s practice and Agromaster® treatments received nitrogen fertilizer as shown in the table below. The trial was set up using a randomized block design with 4 repetitions.
| Treatment | Product | Total-N mineral, kg/ha | Timing |
|---|---|---|---|
| Grower Practice | CAN 27-0-0 | 108 | Before planting |
| CAN 27-0-0 | 72 | Mid-June | |
| Agromaster®* | Agromaster®* 35-0-0, 2-3M, 60% coated N | 180 | Before planting |
| * Agromaster® was made by combining coated urea and CAN. All treatments received the same level of P, K, Ca, Mg and S. |
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Results
The trial showed that Agromaster® increased the marketable yield of potatoes by 6.6%, with a 25% increase in the yield of larger potatoes, those over 55 mm, compared to the grower’s practice.
Total yield distribution by size (mt/ha) for potato grown with Agromaster®, compared to the control and the grower’s practice treatments.
Agromaster® increased nitrogen use efficiency (NUE) by 24%, thanks to the controlled release of nitrogen.
Economic evaluation
| Economic evaluation | Grower Practice | Agromaster® |
|---|---|---|
| Yield, mt/ha | 47 | 50 |
| Cost of fertilizers, €/ha | 455 | 515 |
| Gross income minus fertilizers cost, €/ha | 5209 | 5355 |
| Agromaster® extra revenue vs Grower Practice, €/ha | 146 | |
| Based on: Potato market price for 35-55 mm = 140 €/mt, Potato market price for > 55 mm = 100 €/mt |
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