Zardasht Controlled Release Fertilizer 23-4-9 (Spring Field)

Guaranteed content (wt%)
23Total nitrogen (N)
6 – 7Released nitrogen after 24 h
7 – 8Released nitrogen after a week
4Available phosphorus pentoxide (P2O5)
9Water-soluble potassium oxide (K2O)
1Water-soluble magnesium
0.16Chelated iron by EDTA
0.04Chelated manganese by EDTA
0.02Chelated zinc by EDTA
0.009Chelated copper by EDTA

This fertilizer is a combination of controlled release nitrogen, phosphorus, potassium and chelated microelements, which is designed for spring application to maximize foliage and germination. Approximately 35% of the nitrogen is immediately available for budding and leaf growth and remaining nitrogen is gradually released until late summer which leads to stronger root systems in plants. It is a homogenous granular fertilizer which contains precisely a balanced ratio of nutrients needed by the plant.

Applications and usage

  • This water-insoluble granular fertilizer is suitable for greenhouse plants, flowering trees, shrubs, vines and fruit trees in spring.
  • For fruit trees, it should be added before buds emergence via digging 2 – 4 holes (30×40 cm2) under tree shade. In farms, it can be added to soil while plowing the land. In ornamental plants and greenhouses, it is mixed with planting bed.
  • Application rates are for guidance only. Actual rates will vary with local growing conditions, soil analysis and plant’s age.
  • It is compatible with most types of fertilizers and pesticides.
Type of vegetationApplication dosage (kg/ha)Application dosage (g/plant) Period of application
New transplants

100 – 120 



Before buds appearance

1-year-old trees

200 – 220



2-year-old trees

300 – 320



3-year-old trees

400 – 420



Ornamental plants

150 – 200


Cultivation bed

Storage life

2 years at 25 °C

(Keep in a cool and dry place away from direct sunlight.)


Keep out of reach of children and away from food, drink and animal foodstuffs.

Registration number



25 kg bags