ALPINE MicroBolt Fe micronutrients are intended for use in a complete crop nutritional program where a soil and/or plant tissue analysis has indicated an iron deficiency. ALPINE MicroBolt Fe micronutrients may be applied with ALPINE liquid fertilizers, other liquid fertilizers, fertilizer suspensions, nitrogen solutions, or water.

RECOMMENDATIONS

Application Rate: Maximum annual application rate is 7L/ac.
Optimum rate of application will vary between fields, depending on soil pH and organic matter content. 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 IRON

• Required for the formation of chlorophyll
• Essential for plant respiration, photosynthesis
• Required for symbiotic nitrogen fixation
• Energy transfer

IRON SOIL AVAILABILITY

• 12-22 ppm in soil test is medium amount
• Availability decrease with rising pH
• Poorly drained soils reduce iron uptake

IRON IN THE LEAF

Sufficiency tissue test ranges in ppm

• Canola: 100 -200
• Small grains: 35 – 120
• Peas: 50 – 100
• Corn @ tasseling: 50 – 250
• Soybeans: 50 – 150

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