TopKrop SlowRelease Foliar Fertilizers

TopKrop SlowRelease liquid foliar fertilizers provide an alternative nitrogen source while delivering supplemental plant nutrients throughout the growing season.

This low salt, UV activated formulation is completely crop safe and will stick to the leaf and feed the plant for up to 30 days.

TopKrop SlowRelease foliar nutrition products are intended to be applied in conjunction with a pre-existing fertilizer program to provide crops with all their nutritional needs.

Manufactured locally in Delisle, Saskatchewan.

Close up of a leaf with SlowRelease applied

How does foliar nutrition work?

Foliar fertilizer applications increase chlorophyll on the leaf, which is the green pigment in the plant. The chlorophyll acts like a tiny greenhouse, trapping photons on the leaf longer – dramatically increasing the rate of photosynthesis.

Increased photosynthesis will increase the water and nutrient uptake through the roots, producing bigger, healthier crops.

Foliar Products

SlowRelease (28-0-0.75)

The base of all TopKrop SlowRelease products.

  • 28% Total Nitrogen (68% slow release)
  • 0.75% Potassium
  • Timing: with herbicide
  • Crops: All crops

SlowRelease 1985

Use for increased fertility or when nitrogen, potassium, or sulphur deficiencies occur in the field.

  • 19% Total Nitrogen (68% slow release)
  • 8% Potassium
  • 5% Sulphur
  • Timing: with herbicide
  • Crops: All crops, shines with cereals

SlowRelease 1026

Use for increased fertility or when nitrogen, phosphorus, or potassium, deficiencies occur in the field.

  • 10% Total Nitrogen (20% slow release)
  • 20% Available Phosphate
  • 6% Potassium
  • Timing: with herbicide
  • Crops: All crops, but shines with canola, oilseeds, pulses, and legumes

SlowRelease Health 1458C

Our plant health products combine the advantage of SlowRelease nitrogen with the disease suppression of chloride, acting as a fungicide replacement with an added foliar nutrient package.

  • 10% Total Nitrogen (35% slow release)
  • 4% Available Phosphate
  • 5% Potassium
  • 8% Chloride
  • Timing: fungicide timing (or slightly earlier)
  • Crops: Cereals, canola, and legumes
Sprayer in Canola Field

Crop Protection and Fertility

TopKrop SlowRelease acts as a surfactant when applying other foliars, keeping them on the plant longer and giving you a powerful combination of crop protection and fertility in one application. Compatible with most insecticides, herbicides, and fungicides.

Recommended Application Rates

  • 1.5 to 3 gallons for canola, wheat, peas, and lentils.
  • 2 to 4 gallons for soybeans and corn.

Low Salt Liquid Starter

  • 100% water soluble, low salt index, seed safe
  • Plant available in cooler soils
  • Helps get crops up and out of the ground quicker
  • Timing: Applied in-furrow at seeding (can also be used with SlowRelease products as a foliar to bump up phos levels)