HYSHIELD™ Plant Immune Activator — 20 Litres (5.28 gal)From the creators of Hygrozyme comes HYSHIELD™ — a natural plant defense activator formulated with chitosan, a biopolymer derived from recycled crustacean shells (crab and shrimp exoskeletons). Chitosan triggers a plant's systemic acquired resistance (SAR), essentially tricking the plant into activating its own immune response against pests and pathogens.When applied from seedling to harvest, HYSHIELD stimulates the plant's natural defense mechanisms, suppresses fungal pathogens and pest pressure, and improves resilience to heat and cold stress — resulting in healthier plants and improved crop yield.Key Features Active ingredient: chitosan (derived from recycled crustacean shells) Stimulates systemic acquired resistance (SAR) — activates the plant's own immune system Suppresses fungal pathogens and deters pest feeding Improves plant resilience to heat and cold stress Environmentally sustainable — made from upcycled seafood industry byproducts Compatible with greenhouse, CEA, and organic production programs 20L bulk size — ideal for commercial operations ApplicationUse from seedling through harvest as a preventative plant health program. For usage rates and feed calculator, visit the HYSHIELD Feed Calculator.Also available: HYSHIELD 1L, HYSHIELD 4L, and HYSHIELD 10L. Browse more Pest & Disease Controls.
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