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Ammonium sulfate
TU U 20.1-36584168-003:2018
Sales/packaging terms: EXW, FCA, retail packaging 1.5 kg
Delivery terms: own transport within Ukraine or pickup
49 UAH
Granular chemical-grade ammonium sulfate ((NH₄)₂SO₄) is a high-purity nitrogen-sulfur fertilizer produced through controlled chemical synthesis. It contains 21% nitrogen (ammonium form) and 24% sulfur (sulfate form). This fertilizer stands out for its exceptional purity, stable composition, and absence of heavy metals, making it suitable even for greenhouse use and complex fertilizer blends.
Recommended use:
- all agricultural crops: grains, legumes, oilseeds, vegetables, fodder;
- especially effective for crops with a high need for sulfur: rapeseed, soybeans, mustard, garlic, onions;
- main, pre-sowing, post-sowing, row application;
- also suitable for hydroponics, greenhouses, and water-soluble fertilizers.
Advantages:
- high chemical purity - suitable even for sensitive crops;
- stable composition, which guarantees predictable action;
- nitrogen + sulfur in one granule — double action for growth and quality;
- does not caking, has high granule strength;
- increases the content of proteins, gluten, and oil in the crop;
- universal for open ground and greenhouses.
Limitations and warnings:
- do not store near acids, alkaline substances, or organic fertilizers;
- do not mix with lime or calcium fertilizers without a compatibility test;
- do not allow moisture to build up — caking is possible.
Appearance and color: free-form granules from white to dark brown
| Mass fraction of nitrogen in terms of dry matter, not less, % | 19 |
| Mass fraction of fraction larger than 0.5 mm, % | 80 |
| Mass fraction of fraction smaller than 6 mm, % | 100 |
| Friability, % | 100 |
| Mass fraction of insoluble residue in water, not more than % | 0,5 |
- store in dry, well-ventilated facilities, protected from direct sunlight, with relative air humidity not exceeding 70%. Place bags on pallets at least 15 cm above the floor, arranged in a single layer;
- packaging (bags, big bags) must be tightly sealed to prevent moisture ingress;
- permissible storage temperature: from –20 °C to +35 °C (avoid exposure to high humidity, as this may cause caking or condensation — loosen before use if necessary);
- avoid contact with acids, alkaline substances, organic compounds, or other fertilizers that may cause a chemical reaction;
- in case of prolonged storage, periodically loosen the product to prevent clumping.
Storage guarantee period: 1 month from the date of manufacture, provided that transportation and storage conditions are met. After this period, the product must be tested for compliance with technical specifications before use.
| Culture | Application period /rate, kg/are | Special application conditions | |||
|---|---|---|---|---|---|
| Pre-sowing cultivation | First fertilization | Second fertilization | Third fertilization | ||
| Cereal сrops | |||||
| Winter wheat | 1,4 | - | - | - | applied in autumn before plowing or deep digging |
| - | 1,0-2,4 | - | - | spring tillage | |
| - | - | 1,0-2,9 | - | beginning of the tube | |
| Spring barley | 1,4-4,3 | - | - | - | before pre-sowing cultivation |
| - | 1,4 | - | - | no later than the appearance of 1-2 leaves in the presence of moisture | |
| Maize | 2,6-5,7 | - | - | - | on heavy soils in areas of unstable or insufficient moisture, apply in the fall under plowing |
| 2,9-4,3 | - | - | - | on heavy soils in areas of unstable or insufficient moisture, apply in spring for cultivation | |
| 1,4 | - | - | in the 3-5 leaf phase in the presence of moisture | ||
| Oats | 1,43-4,3 | - | - | - | in spring for replanting cultivation |
| - | 1,4 | - | - | no later than the appearance of 1-2 leaves in the presence of moisture | |
| Industrial crops | |||||
| Sunflower | 3,0 | - | - | - | during primary tillage or before sowing |
| Sugar beet | 5,0 | - | - | - | during primary tillage or before sowing |
| Oilseeds | |||||
| Winter rape | 1,25-3,3 | - | - | - | during autumn (fallow) tillage or before sowing |
| - | 4,0 | - | - | when spring vegetation resumes | |
| - | - | 3,8 | - | in the stem formation phase | |
| - | - | - | 1,9 | in the phase of full budding under conditions of sufficient moisture | |
| Soybeans | 1,4 | - | - | - | during primary tillage or before sowing |
| - | 1,4 | - | - | as needed before flowering begins | |
| Oil flax | 1,9-2,8 | - | - | - | during autumn (fallow) tillage or before sowing |
| - | 0,7-0,8 | - | - | in the fir-tree phase (plants reach a height of 5-10 cm and have 5-6 pairs of leaves) if nitrogen was not applied before sowing | |
| Vegetables | |||||
| Tomatoes | 3,8-7,0 | - | - | - | before plowing or during sowing cultivation, if no further fertilization is planned |
| - | 2,0-4,5 | - | - | when planning fertilization | |
| Peppers | 5,7-6,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,9-3,0 | - | - | when planning fertilization | |
| Zucchini | 4,3-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 2,1-3,6 | - | - | when planning fertilization | |
| Cucumber | 4,0-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,0-2,9 | - | - | when planning fertilization | |
| Aubergine | 3,8-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,9-3,8 | - | - | when planning fertilization | |
| Potatoes and other root crops | |||||
| Potatoes | 3,0-6,0 | - | - | - | in the fall for plowing or in the spring for cultivation |
| - | - | 0,9 | - | during inter-row cultivation at a bush height of 15-20 cm in the presence of moisture | |
| Table beet | 3,0-4,0 | - | - | - | on heavy and light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing or in spring under cultivation |
| - | 0,9 | - | - | row fertilization in the presence of moisture | |
| Carrots | 4,3 | - | - | - | on heavy and light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing or in spring under cultivation |
| - | 0,9 | - | - | row fertilization in the presence of moisture | |
| Radish | 4,8 | - | - | - | on light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing |
| Onion | 4,3-5,7 | - | - | - | under plowing or into pre-sowing cultivation (if no other fertilizations are planned) |
| 2,4-3,8 | - | - | - | when planning fertilization | |
| Garlic | 2,9-5,7 | - | - | - | under plowing or into pre-sowing cultivation (if no other fertilizations are planned) |
| 2,4-2,9 | - | - | - | when planning fertilization | |
| Fruit trees and berry trees | |||||
| Apple tree | - | 4,5 | - | - | fertilizing in spring before the start of vegetation or from the bud swelling phase to the pink buds phase |
| Pear tree | - | 3,3 | - | - | fertilizing in spring before the start of the growing season/at the beginning of the growing season |
| Cherry tree | - | 5,5 | - | - | spring fertilization before flowering |
| Raspberry | - | 2,9 | - | - | spring fertilization before the start of vegetation |
| Wild Strawberry/Garden Strawberry | - | 2,9 | - | - | spring fertilization before the start of vegetation |
| Blueberries | Fertilize twice a year: at the beginning of the growing season (April) and at the end (August-September). After planting: 2nd year – 1 tbsp, 3rd year – 2 tbsp, 4th year – 4 tbsp, 5th year – 8 tbsp, 6th and subsequent years – 16 tbsp or 40–50 g per adult bush | ||||
| Grapes | - | 5,7 | - | - | spring fertilization before the start of vegetation |
| Flowers and lawn grasses | |||||
| Rose | 0,02-0,03 | - | - | - | in the hole when planting |
| - | 0,015-0,020 per 10 liters of water | - | - | in spring, after pruning and before shedding 1 leaf | |
| - | - | 0,03-0,04 | - | during the period of intensive growth before the beginning of mass flowering | |
| Tulips | - | 3,0 | - | - | for plant heights of 5-8 cm |
| Lawn grasses | 2,9 | - | - | in autumn before lawn establishment | |
| - | 2,4 | - | - | as needed, when the soil warms up to 10 C | |
| - | - | 2,4 | - | as needed, from the beginning of May to the end of June | |
The fertilizer application rates were developed by the Department of Agrochemistry and Soil Science of Uman National University of Horticulture under the scientific supervision of Doctor of Agricultural Sciences, Professor Hospodarenko H.M., commissioned by AC Grossdorf. These recommendations are the intellectual property of AC Grossdorf and may be distributed only with proper attribution to the owner.
The provided application rates are generalized and do not replace the need for consultation with an agronomist.