Sunflower - is the main oilseed crop of Ukraine. The formation of 1 ton of seed and vegetative appropriate quantity of sunflower makes 40-55 kg of soil N, 15-25 kg P2O5, 100-150 kg K2O and large amounts of trace elements. This culture is enjoying potassium, able to absorb phosphorus and potassium from the soil soluble compounds and fertilizers. It has a well-developed root system that penetrates to a depth of 3-4 meters and horizontally - by 0.8-1.2 m. This allows plants to absorb moisture and batteries from deep soil layers. Sunflower is culture, demanding to rotation. However, it is often planted in the same field every 3-4 years, leading to symptoms of micronutrient deficiency and loss of productivity culture. Critical phases in need micronutrients in the culture phase are the emergence of 6-8 pairs of leaves and blossoms. Culture is very sensitive to boron deficiency, especially during drought and on carbonate soils.
Recommendations for conducting of foliar feeding of sunflower by «ROSTOK» complex fertilizers
№ |
Phase of development |
Preparation |
Application rate, l/ha(tons) |
Value |
1 |
Phase of 4-6 leaves |
«ROSTOK» Oil |
2 |
Strengthening the root system, intensive growth of vegetative mass, increase yield and oil content in seeds. |
«ROSTOK» Macro |
1 |
|||
2 |
Phase of 8-10 leaves |
«ROSTOK» Oil |
2 |
Increased resistance to disease, stimulates vegetative and generative development of plants, improves the photosynthetic activity of foliage, and improves protein synthesis, increase yield and oil content in seeds. |
«ROSTOK» Fruiting |
1 |
|||
«ROSTOK» Boron |
1 |
Increased yield by increasing caryopsides in a basket and intensification of chemical synthesis processes. |
Consumption rate of working solution is 200-300 l / ha.
It is advisable to combine feeding with the introduction of crop protection and urea (if necessary).
The content of nutrients in fertilizers «UAROSTOK»® and doses of entering are designed according to the needs of plants in the components during a period of growth and development.
The use of fertilizers «UAROSTOK»® promotes:
Microfertilizer |
Composition of microfertilizer, g/l |
||||||||||
N |
Р2О5 |
К2О |
MgO |
SО3 |
Fe |
Mn |
B |
Zn |
Cu |
Mo |
|
«ROSTOK» Oil |
80 |
- |
- |
33 |
40 |
4 |
13,4 |
5,4 |
8 |
3 |
0,15 |
«ROSTOK» Macro |
60 |
120 |
60 |
0,2 |
10 |
1,4 |
1 |
0,2 |
2,2 |
2,5 |
0,055 |
«ROSTOK» Fruiting |
- |
100 |
200 |
- |
5 |
0,5 |
2 |
0,75 |
0,6 |
0,6 |
0,05 |
«ROSTOK» Boron |
- |
- |
- |
- |
- |
- |
- |
100 |
- |
- |
- |
Microfertilizers «UAROSTOK»® is non-toxic to humans and bees do not cause allergies and environmentally safe.