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Promi-Fertil 7-21-7

Question

7-21-7 NPK-fertiliser solution

Declared content (%w/w):

7% Total Nitrogen (N)
4,2% Ammoniacal Nitrogen (N)
2,8% Ureic Nitrogen (N) 
21% Water-soluble Phosphorus Pentoxide (P2O5
7% Water-soluble Potassium Oxide (K2O) 
Low in chloride. Low in biuret.


Pictures in Promi-Fertil 7-21-7

NPK fertilizer solution with fast absorption, with a high content of phosphorus specially indicated to favor rooting and flowering. Its use is recommended during the stages of greatest metabolic activity, and particularly during vegetative growth and pre-flowering.
 
Appearance = Blue liquid
pH = 6.8
Density = 1.34 g / cm3

Apply 2-3 times during the growing cycle, at the beginning of the vegetative development and as long as the crop has sufficient leaf development, as well as pre-flowering and fruit set. It is recommended to wait between 14 and 21 days between each application. The doses to be used per application are the following:

  Foliar Fertigation
   Horticultural 150-250 ml/hl 2-3,5 l/ha
   Olive, citrus and fruit trees 300-450 ml/hl 4-5,5 l/ha
   Nurseries 50-150 ml/hl 0,75-2 l/ha
   Ornamental 50-150 ml/hl 0,75-2 l/ha
   Extensive 0,5-1,5 l/ha ---

Note: These recommendations are general and indicative, and must be adapted by a qualified technician based on agronomic and edaphoclimatic factors.

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