Mr.® Maestro N-21 Registered Product
Drip & Irrigation Fertilizers

Mr.® Maestro N-21

Ammonium Sulphate (With Nitrification Inhibitor)

Formulation & Warranty Content

Formulation and Content:

Total Nitrogen (N): %21

Ammonium Nitrogen (NH4-N): 21%

Nitrification Inhibitor (DCD): 0.5%


Package Size: 25 kg

  • ProductionAt AGROTAR facilities
  • Supportagricultural engineer
Registration Documents

It is an ammonium sulphate fertilizer with a nitrification inhibitor (DCD).


Thanks to its DMPP content, it slows down the conversion of ammonium to nitrate, allowing nitrogen to remain available in the soil for a long time. Thus, the plant's nitrogen uptake and use efficiency increase.


It guarantees the regular and balanced nutrition of the plant by balancing the constant change and movement of nitrogenous compounds in the soil.


It directly increases the yield and quality of the plant.

Target Crop Groups: rice, wheat, barley, cotton, sunflower, sugar beet, soy, peanut, maize, onion, potato, garlic, open field vegetables, fruit trees and turf/green areas / greenhouse crops.


Application Periods and Amounts (Per decare):

  • Field Crops (rice, wheat, maize, etc.): 25-50 kg/decare after planting.
  • Fruit Trees: 25-50 kg/decare after blooming.
  • Open Field Vegetables, Greenhouses and Drip Irrigation: 25-50 kg/decare after planting; 3-5 kg/decare in drip irrigation.


Recommended Doses of Application:

  • Soil: 2–4 kg/decare
  • Foliar: 150 – 300 g / 100 L water


Formulation and Content:

Total Nitrogen (N): %21

Ammonium Nitrogen (NH4-N): 21%

Nitrification Inhibitor (DCD): 0.5%


Package Size: 25 kg

In what period and in what dosage should you use this product?

Let our agricultural engineers plan the fertilization program according to your product and soil.

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