10 l
HGA Foliar Fertilizers
Simple inorganic micronutrient fertilizer, mineral micronutrient fertilizer, 4,5 % Fe solution
10 l
Iron (Fe) complexed by HGA, water-soluble, 4,5 % m/m
Iron complexed with heptagluconic acid
Very fast water solubility
Highly digestible and moves quickly inside the plant
Safe for the environment
Liquid formulation
Heptagluconic acid (hereinafter referred to as “HGA acid”) is an organic complexing agent in fertilizers containing micronutrients. HGA acid is effective, biodegradable, has good stability over a wide range of pH values, and high solubility in water. The use of HGA has been authorized for many years in Spain, and no harm to the environment or human health has been reported during that time [COMMISSION REGULATION (EU) 2016/1618 of 8 September 2016].
| Crops | Dosage [l/ha] | Water amount [l/ha] | Number of treatments | Application |
|---|---|---|---|---|
| All crops | 2–5 | 200–600 | 3 | After the appearance of iron deficiency symptoms |
| Potatoes | 1–3 | 200–300 | 2 | From full emergence to the budding stage |
| 1–4 | 300–400 | 3 | From flowering to the end of berry formation | |
| Sugar beet | 1–2 | 200–300 | 1 | At the 4–6 leaf stage |
| 1–3 | 200–300 | 2 | From the 8–leaf stage to row closure | |
| Oilseed rape | 1–2 | 200–300 | 1 | In autumn: from the 4–8 leaf stage |
| 1–3 | 200–300 | 2 | In spring: from the beginning of growth to the yellow bud stage | |
| Cereals | 1–3 | 200–300 | 2 | In spring: from the resumption of growth to the end of stem elongation |
| Maize | 1–3 | 200–300 | 1 | From the 4–leaf stage |
| 1–4 | 200–300 | 2 | To the end of the technically feasible application period | |
| Legumes | 1–2 | 200–300 | 1–2 | During the intensive leaf growth and development stage |
| Vegetables – leafy | 2–4 | 300–600 | 2–4 | From full emergence or after seedling establishment; during intensive leaf biomass growth until 14 days before harvest |
| Vegetables – root | 2–4 | 400–600 | 2–4 | From full emergence until 14 days before harvest |
| Vegetables – solanaceous and cucurbitaceous | 2–3 | 400–600 | 2–4 | From full emergence or after seedling establishment until 14 days before harvest |
| Pome fruit trees | 3–7 | 500–1000 | 2–4 | After seedling establishment; during the period of greater leaf area |
| 3–5 | 300–600 | 2–3 | From the pink bud stage to the fruit ripening stage | |
| Stone fruit trees | 3–7 | 500–1000 | 2–4 | After seedling establishment; during the period of greater leaf area |
| 3–5 | 300–600 | 2–3 | From the beginning of fruit set to the ripening stage | |
| Soft fruit bushes | 2–6 | 400–600 | 2–5 | From the budding stage to the beginning of fruit ripening |
| Grassland | 2–5 | 200–600 | 3 | From the onset of spring growth until mid-September; 7–10 days after cutting/grazing |
