ALPINE MicroBolt® Zn micronutrient is manufactured by utilizing the highest quality raw materials to provide a very agronomically efficient source of plant available Zinc. The chelate used is compatible with high orthophosphate products. ALPINE MicroBolt ZN micronutrient delivers:

• Maximum plant nutrient solubility – in-furrow or foliar
• Minimal salt index
• No application equipment corrosion
• Compatibility with most other liquid fertilizers
• Tank mixable with most pesticides
• Low impurities
• Neutral pH

RECOMMENDATIONS

Application Rate: Use 1/2 to 1 Litre/ac either in-furrow or as a foliar spray.
The optimum rate of application will vary between fields, depending on soil pH and organic matter content. The product should be used on the basis of soil and/or tissue analysis.
Maximum of 2L/ac of any combination of micronutrients when mixed with a seed placed starter fertilizer.

ROLE OF ZINC

• Zinc is crucial in flower formation. (i.e. Canola)
• Zinc acts like ‘antifreeze’ in the plant to give early and late frost protection
• Zinc controls the synthesis of many plant growth regulators
• Animals deficient in Zinc require twice as much feed to attain the same weight
• Zinc is unavailable in high pH soils
• Zinc improves germination rate and plant vigor
• Zinc is necessary for the starch formation and proper root development
• Zinc is also essential for seed formation and maturity

ZINC SOIL AVAILABILITY

• The availability of Zinc is directly related to 3 soil factors:
  • the amount of Zinc supplying minerals
  • the amount of available phosphate and
  • soil pH (Calcium Carbonate)

• Soils with both high pH and high phosphate levels will make the available Zinc into the complexed for form – ZnPO4
• When Zinc is precipitated in this form, it is unavailable and deficiencies can occur
• 1.1 – 3.0 ppm in a soil test is the medium amount

ZINC IN THE LEAF

• Research indicates the P to Zn ratio in leaf tissue should be 100–150:1
• Whenever the P content of a plant increases, so must the Zn concentration in order that this ratio be maintained
• Sufficiency tissue test ranges in ppm
  • Canola: 25–45
  • Small grains: 25–50
  • Peas: 40–80
  • Corn @ tasseling: 25–50
  • Soybeans: 25–50

DEFICIENCIES SYMPTOMS

• The most common nutrient deficiencies include interveinal chlorosis on older leaves with shortening of the intermodal area
• This shortening often leaves a short compressed plant with a rosette appearance

For more specific guidelines, consult with your authorized ALPINE Dealer or ALPINE District Sales Manager for fertility recommendations.