Master Plant-Prod Inc.
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No additives, no fillers. Plant-Prod’s 100% water-soluble fertilizer increases yield and quality w
Symptoms are signals — not conclusions.
Media and tissue testing help confirm nutrient issues before adjustments are made.
05/12/2026
Macronutrient deficiencies each present distinct visual patterns.
• Nitrogen (N) — general yellowing on older leaves, reduced vigor
• Phosphorus (P) — dark green or purplish older leaves, slow growth
• Potassium (K) — marginal scorch and edge burn on older leaves
• Calcium (Ca) — distorted new growth
• Magnesium (Mg) — interveinal chlorosis on older leaves
• Sulfur (S) — yellowing on younger leaves
Recognizing these patterns supports more accurate diagnosis before adjustments are made.
Water quality plays a larger role in greenhouse production than many realize.
From nutrient availability to system performance, clean water supports consistency.
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314 Orenda Road
Brampton, ON
L6T1G1
