Zinc

• Poor seed vigor 
• Reduced size of leaves,  misshapen leaves 
• Chlorosis, leading to necrosis  and premature leaf fall 
• Chlorotic leaves and dieback  in citrus 
• Rosetting and/or “little leaf”  in fruit trees
• “Tram lining” in corn (light  striping on both side of midrib) 
• Bronze spotting on older leaves later giving a mottled appearance in legumes
• Reduced development and  size of fruit 

• Formation of chlorophyll 
• Uptake and use of water in plants
• Zinc influences the rate of seed  and stalk maturation 
• Involved in several enzyme systems, growth hormone auxins, and synthesis of nucleic acids

Apply Zinc onto crops grown on high pH or heavily limed or manured soils; crops grown on peat or muck soils with high organic matter; crops grown on light, sandy soils or soils with low organic matter. Soils with high content of N, K or Mg can reduce the availability of Zn. Also, when conditions are cold and wet in the spring Zn availability become low