OR 4-2-6

Characteristics

OR – Tailor made, Chloride Free solution 4-2-6 + 6%TE + 1.5%Ca + 0.9%Mg

Affective Fertigation for crops in soilless media that are sensitive to calcium and magnesium deficiencies, and with optimum nitrate/ammonium ratio.

6% TE (chelated EDTA): 660 ppm Iron (Fe), 280 ppm Manganese (Mn), 150 ppm Zinc (Zn), 30 ppm Copper (Cu) and 8.6 ppm Molybdenum (Mo).

Corrosivity

EC

pH

 

Volume weight

Content (gram/liter)

OR liquid solution

 

 
   

Moderately corrosive

+ 0.45 dS/m

acid solution

%NO3

%NH4+

gr/cm³

Mg

Ca

K2O

P2O5

N

N-P-K

   

 

Diluted to 1 liter solution / 1 m³ irrigation water.

 (3.5 – 2.8)

90

10

1.22

9

15

73

24

49

4-2-6

   

 

Applications

Fertigation for plants in greenhouses, nurseries, orchards, and crops in soilless media that are sensitive to calcium and magnesium deficiencies.

  • Application of 1 solution instead of 2-3 separate solutions (NPK, calcium and magnesium).
  • OR solutions containing about 90% of the nitrogen as nitrate (NO3-) to prevent acidification (absorption of Ammonium (NH4+) by the plant roots) of the growing medium.
  • Chlorine-free solution.
  • OR solution for application in inert growing media without buffer capacity – pH: rock wool, perlite, dune sand.
  • Enrichment with calcium and magnesium to prevent the blossom-end rot phenomenon in sensitive crops.

 

Dosage:

The dosage generally depends on the plant nutrition consumption and absence of them in soil solution. If there are no soil fertility analyzes, then the OR dosage generally is: 

  • Application 10-100 liters/ hectare/ day *The small dose is for small plants and high dose for big plants, depend on crop varieties, stage of growth.
  • For proportional fertigation: 1-3 liters/1000L of irrigation water.

 

Note: For agricultural use only, the recommendations are for standard use, and should be tested in small scale first. For optimal results consult with your agronomist.

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