Fertilizers

Three primary nutrients needed for plant growth

• boron, calcium, zinc

• chlorine, sulfur, iron

• Magnesium, manganese, molybdenum

• Nitrogen, phosphorous, Potassium

Which elements do plants need in the smallest amounts?

• Macronutriens

• Micronutrients

• Primary elements

• Secondary Elements

Which are used in large amounts?

• Macronutrients

• Micronutrients

• chlorine, boron

• magnesium, iron

This element is important for plant hardiness, root growth, and disease resistance

• Boron

• Chlorine

• Phosphorus

• Zinc

Which are micronutrients?

• Carbon, Hydrogen, Oxygen

• Copper, Manganese, zinc

• Nitrogen, Phosphorus

• Sulfur, Magnesium, water

Which nutrient promotes plant growth and is needed the most?

• Calcium

• Nitrogen

• Sulfur

• Zinc

Purplish leaves most likely mean a deficiency of:

• Nitrogen

• Phosphorus

• Potassium

• Zinc

Which produces a healthy green color?

• Phosphorus

• Nitrogen

• Copper

• Zinc

A fertilizer analysis reads 10-20-15. What % Phosphorus does the fertilizer provide?

• 10%

• 20%

• 15%

• 50%

Fertilizer Analysis reads 20-0-10. What % Nitrogen does the fertilizer provide?

• 10%

• 20%

• 0%

• 50%