Zinc Sulphate Heptahydrate 25kg

Zinc Sulphate Heptahydrate is a Fertiliser containing Zinc and Sulphur used for combating a Zinc Deficiency in Plants such as Fruits and Vegetables, Flowers, Vines and Ornamentals Grown in both Soil and Soilless Variations.
Zinc Sulphate Heptahydrate (ZnSO₄) is a key source of Zinc (Zn), an essential Trace Mineral for Crops and Pastures. It delivers significant benefits to Plant Health and Productivity, especially in Zinc-Deficient Soils, which can be a concern in some New Zealand (NZ) Regions.
Active Ingredients:
- Zinc 22%.
- Sulphur 11.7%.
Benefits of Zinc Sulphate Heptahydrate to Crops and Pastures:
Supports Hormone Production and Growth.
- Zinc is crucial for the Synthesis of Auxin, a Growth Hormone that Promotes Cell Elongation and Root Development.
- It ensures Proper Shoot and Leaf Expansion, leading to Vigorous Plant Growth.
- Result: Stronger Plants, increased Pasture Density, and Higher Crop Yields.
Enhances Photosynthesis and Enzyme Activity:
- Zinc Activates Enzymes involved in Photosynthesis, Carbohydrate Metabolism, and Protein Synthesis.
- It helps maintain Chlorophyll Levels, ensuring Efficient Energy Production.
- Result: Healthier, Greener Plants with improved Growth Rates, especially in Crops like Maize and Cereals.
Improves Seed and Fruit Development:
- Zinc is vital for Pollen Formation, Fertilization, and Seed Set, directly impacting Reproductive Success.
- In Crops like Apples, Citrus, and Cereals, it improves Grain Quality and Fruit Size.
- Result: Higher Yields and better-quality Produce, such as Denser Grains in Wheat or Larger Fruit in Orchards.
Boosts Pasture Productivity:
- In Pastures, Zinc supports Grass and Legume Growth, particularly in Clover, which is sensitive to Zinc Deficiency.
- It promotes Faster Regrowth after Grazing and Improves Forage Quality.
- Result: Increased Dry Matter Production and Better Nutritional Value for Livestock.
Corrects Deficiency in NZ Soils:
- Zinc Deficiency is common in NZ’s Sandy, Volcanic, or High-pH Soils, such as those in the Waikato and Northland Regions, where Zinc availability is Low.
- Applying Zinc Sulphate restores Levels, ensuring Plants can access this Essential Nutrient.
- Result: Prevents Yield Losses and Maintains Consistent Productivity.
Enhances Stress Tolerance:
- Zinc helps Plants cope with Environmental Stresses like Drought or Disease by Supporting Metabolic Processes and Reducing Oxidative Damage.
- Result: More resilient Crops and Pastures, leading to Stable Yields under NZ’s Variable Climate conditions.
Deficiency Symptoms of Zinc in Crops and Pastures:
Zinc Deficiency shows distinct symptoms, often more pronounced in certain NZ Soil Types.
- Small Leaves (“Little Leaf”): Leaves are Smaller than Normal, often seen in Crops like Maize, Citrus, and Apples, with Shortened Internodes.
- Interveinal Chlorosis: Yellowing between Veins, particularly in Younger Leaves, while Veins remain Green, common in Cereals and Pastures.
- Stunted Growth: Plants exhibit Rosetting (Bunching of Leaves), Reduced Shoot Growth, and Poor Root Development.
- Poor Yield and Quality: In Pastures, Grasses and Clover become Sparse; in Crops, Grain or Fruit Production Drops (e.g., Maize shows White Bud, and Apples produce Smaller Fruit).
NZ-Specific Observations: Research from Massey University has noted Zinc deficiency in Maize and Citrus on North Island Volcanic Soils, leading to Yield Rductions of 15–25% if uncorrected.
Practical Impact on Yield with NZ References:
Crops:
- Studies in NZ, such as those by AgResearch, show that applying Zinc Sulphate to deficient Soils can increase Maize Yields by 10–20% and improve Apple Yields by up to 15%, particularly in Northland and Waikato.
Pastures:
- In NZ Dairy Pastures, correcting Zinc deficiency can Boost Dry Matter Production by 5–15%, supporting Higher Milk Production, as noted in trials in the Waikato Region.
NZ Context:
- Zinc deficiency is a recognized issue in NZ, especially in Sandy or Pumice Soils in the North Island, according to the NZ Ministry for Primary Industries (MPI) Guidelines. It’s also a concern in Intensively Farmed Areas with High Phosphorus Levels, which can reduce Zinc uptake.
Application Tips;
Soil Testing:
- Test Soil pH and Zinc Levels, as Deficiency is Common in NZ Soils with pH > 7.0, Sandy Textures, or High Phosphorus Content.
Application Methods:
- Use Zinc Sulphate as a Foliar Spray (0.5–1kg /ha) for quick correction, or apply to Soil (5–10 kg/ha) for longer-term benefits.
Timing:
- Apply early in the Gowing Season or at the first sign of Deficiency, especially during Rapid Growth Phases in spring.
Notes:
- Avoid over-application, as excess Zinc can cause Toxicity, leading to reduced Iron or Copper Uptake and Stunted Growth.
- By using Zinc Sulphate to address Zinc needs, you can Enhance Growth, Reproductive Success, and Productivity in both Crops and Pastures, particularly in NZ’s Zinc-deficient Soils.
Caution:
Use strictly according to label directions.
Available in a 25Kg.