21-3-7, 5-6 M Topdress

Quickstart topdress formulation is quickly absorbed for an extra boost of nutrition at the start of the growth cycle

21

N

3

P2O5

7

K2O
Find a dealer

Osmocote Blend 21-3-7 Topdress with E-Max polymer coating regulates the release of nutrition based upon moisture and temperature, improving nutrient efficiency and offering predictable longevities. Ideally suited for outdoor production, it provides fast green-up for overwintered plants.

  • Soluble nitrogen, phosphorus and potassium provide quick green-up after application

  • Optimally efficient use of nutrients results in reduced input cost

  • Reduces leaching, volatilization and other forms of nutrient losses

  • STEP Hi-Mag micronutrients ensure maximum growth in all conditions

  • Provides a safe and consistent source of nutrition throughout the season

Longevity at average media temperature

60 ̊F (15 ̊C)70 ̊F (21 ̊C)80 ̊F (26 ̊C)90 ̊F (32 ̊C)
6-7 months5-6 months4-5 months3-4 months

 

 

Surface application (grams)

Common container
volumes		Approx. containers
per cubic yard1		LowMedHigh
1 quart850345
2 quart4006911
1 gallon trade30081114
1 gallon210111621
2 gallon trade125182735
2 gallon102223342
3 gallon70324962
5 gallon52446583
7 gallon356597123
1May vary depending on container brand, media, and fill method.

 

 

Large container volumesSurface area
in square feet		LowMedHigh
10 gallon (17" diam.)1.478118149
15 gallon (17.5" diam.)1.584126160
20 gallon (21" diam.)2.3129193245
25 gallon (22.5" diam.)2.8157235298
30 gallon (26.5" diam.)3.8123319405
45 gallon (30" diam.)4.8269404511
65 gallon (30" diam.)4.8269404511
100 gallon (36" diam.)7.1398597756
200 gallon (48.5" diam.)12.871710761363
24" box4.0224336426
30" box6.25350525666
36" box9.0504757958
48" box16.089713451704
For containers not listed, multiply surface area by:5684106

 

 

Landscape

LowMedHigh
Pounds per 1000 square feet9.514.519.0
Kilograms per 100 square meters4.67.19.3
Pounds of N per 1000 square feet2.03.04.0

 

 

Approximate Volume Measurements

 

ICL spoons

#1#2#3#4#5#6#7
Grams8121633436384

 

 

Conventional measures

1 tsp.1 tbsp.1/4 c.1/3 c.1/2 c.1 c.
Grams4135371106213

1
Verify product analysis, longevity, and rate for plants in your production system (for assistance, contact your regional ICL Territory Manager or call ICL Customer Service at 800-492-8255)
2
Consult rate tables printed on bag labels and product sheets
3
For top-dress applications, spread fertilizer evenly on container surface (avoid piling fertilizer directly against plant stem)
4
Irrigate after application (irrigation frequency and volume should be adjusted during the crop production cycle according to crop type, environmental conditions, and desired soluble salt levels)
5
A product trial is recommended before adopting a new fertilizer program or making full-scale changes to standard cultural practices (test several rates on representative plant types)
6
Use caution when applying to plants being over-wintered under cover (if you can't monitor soluble salts and/or adjust irrigation practices, avoid Fall and Winter applications
7
Store in a clean, cool, dry place

Brand details

This product is part of the Osmocote Blend, E-Max portfolio

Designed for outdoor production, these specialized products combine Osmocote with advanced E-Max technology.

Learn more about Osmocote Blend, E-Max
thumb

Our products

Products for greenhouse and nursery ornamental plants

Explore our products
thumb

Our brands

Setting the standard in the ornamental market for 50+ years

Explore our brands
thumb

Our knowledge

Tips and advice, the latest technologies, market related information

Explore our knowledge