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2018-2019 Horticultural Catalog

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Essential Nutrients<br />

Micronutrients<br />

Considered “minor” or trace elements, Micronutrients include<br />

Boron (B), Chloride (Cl), Copper (Cu), Iron (Fe), Manganese<br />

(Mn), Molybdenum (Mo), and Zinc (Zn). Many support the<br />

functions of Macronutrients.<br />

Boron<br />

• Helps to improve seed set<br />

• Is a component of cell walls<br />

Signs of deficiency:<br />

• Terminal bud dies<br />

• Leaves appear deformed and/or necrotic<br />

• Symptoms appear first on young leaves<br />

Chloride<br />

• Supports transport of macronutrients<br />

throughout plant<br />

• Helps plant acclimate to varying<br />

water quantities<br />

Signs of deficiency:<br />

• White, necrotic spots may appear along<br />

leaf edges<br />

• Leaf tips may curl or wilt<br />

• Symptoms appear first on young leaves<br />

Copper<br />

• Least mobile of micronutrients<br />

• Necessary for successful<br />

chlorophyll formation<br />

Signs of deficiency:<br />

• Plant growth appears stunted<br />

• Leaves discolored, small and deformed<br />

• Terminal bud appears healthy<br />

• Symptoms appear first on young leaves<br />

5 10.811<br />

BBORON<br />

17 35.453<br />

Cl<br />

CHLORIDE<br />

29 63.546<br />

Cu<br />

COPPER<br />

Iron<br />

• Assists in chlorophyll formation<br />

• Deficiencies display as chlorosis in leaves<br />

Signs of deficiency:<br />

• Yellowing between leaf veins<br />

• Stems do not appear shortened or rosetted<br />

• Leaves do not develop necrotic spots<br />

• Symptoms appear first on young leaves<br />

Manganese<br />

• Assists in chlorophyll synthesis<br />

• Accelerates germination and maturity<br />

Signs of deficiency:<br />

• Yellowing between leaf veins<br />

• Stems appear shortened or rosetted<br />

• Leaves develop necrotic spots<br />

• Symptoms appear first on young leaves<br />

Molybdenum<br />

• Aids in the use of nitrogen<br />

• Helps convert inorganic phosphorus to<br />

organic forms<br />

Signs of deficiency:<br />

• Mottling and interveinal chlorosis<br />

• Plant may show overall chlorosis<br />

• Leaves may curl or cup<br />

Zinc<br />

• Essential for several metabolic reactions,<br />

critical to early growth stages<br />

• Aids in protein synthesis and<br />

growth regulation<br />

Signs of deficiency:<br />

• Yellowing between leaf veins<br />

• Stems appear shortened or rosetted<br />

• Symptoms appear first on young leaves<br />

Abbreviations Used in Horticulture<br />

26 55.845<br />

Fe<br />

IRON<br />

25 54.938<br />

Mn<br />

MANGANESE<br />

42 95.96<br />

Mo<br />

MOLYBDENUM<br />

30 65.38<br />

Zn<br />

ZINC<br />

essential nutrients<br />

800-325-3055<br />

www.hummert.com<br />

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