• oxide
  • elemental
Nitrogen Total (N) 17%
Ammoniacal nitrogen (N-NH4) 2.9%
Urea nitrogen (Ur-N) 14.1%
Phosphorus Pentoxide (P205) 5%
Water soluble (P205) 5.0%
Potassium Oxide (K20) 5%
Water soluble (K20) 5.0%
Magnesium Oxide (MgO) 5.0%
Water soluble 3.0%
Calcium oxide (CaO) 2.0%
Nitrogen Total (N) 17%
Ammoniacal nitrogen (NH4-N) 2.9%
Urea nitrogen (Ur-N) 14.1%
Phosphorus (P) 2.2%
Water soluble 2.2%
Potassium (K) 4.2%
Water soluble 4.2%
Magnesium (Mg) 3.0%
Water soluble 1.8%
Calcium (Ca) 1.4%
Sierrablen Plus Spring & Summer with Pearl® Technology

Spring & Summer with Pearl® Technology

17-5-5+2CaO+5MgO

  • Description
  • Advantages
  • Directions for use
  • Spreader settings
Description

We have added Ostara's Pearl® Technology to our premium controlled-release Sierrablen Plus fertilizers and it is providing significantly increased rooting and more efficient nutrient use over traditional ammonium-phosphate sources. With Pearl Technology we have eliminated the risk of phosphorus leaching into the environment or it irreversibly locking onto soil particles: Pearl only releases in response to organic acids produced by the roots and therefore will be taken up as per the plants requirement.

Advantages

The key benefits of Root Activated™ continuous-release phosphorus, including increased turf rooting density and better phosphorus use efficiency, have been proven through published independent research trials in the UK and US.

  • Controlled-release Poly-S nitrogen for strong turf response and 3+ month longevity.
  • Root-activated™, continuous-release phosphorus, nitrogen and magnesium resulting in increased rooting.
  • Contains Polyhalite with K, CaO and MgO.
  • Circular nutrients N, P and MgO recovered from phosphorus-rich water streams.
  • Earlier harvest time when used for turf production.
Directions for use
Maintenance application
Apply the fertilizer after mowing with a spreader
Spreader settings

 

Spreader

 

ICL SR2000 or Accupro 2000

Spread Width

4m

Cone Setting

4

 

 

Application Rate

 

20g

25g

30g

35g

40g

45g

50g

Single Pass

K ½

L

M

M ½

N

O

P

Double pass

J ½

 

K

 

K ½

 

L

 

Sierrablen Plus Spring & Summer includes Pearl® Technology, a unique Root Activated™ continuous-release phosphorus recovered from phosphorus-rich water streams. This spring and summer fertilizer is designed to encourage healthy turf growth through the season providing great longevity from controlled release nitrogen. 

Suggested period of use

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec