Horticulture Plant Nutrition

Fertilizers that contain nitrogen, potassium, and phosphorous are known as ____.

• complete fertilizers

• slow-release fertilizers

• fertilizer grades

• superphosphates

Which macronutrient is responsible for the plant’s ability to form green chlorophyll molecules?

• Nitrogen

• Potassium

• Phosphorous

• Sulfur

Which macronutrient plays a crucial role in photosynthesis and respiration?

• Nitrogen

• Potassium

• Phosphorous

• Sulfur

Which micronutrient becomes unavailable at high pH levels?

• Boron

• Chlorine

• Iron

• Manganese

Which of the following is a macronutrient?

• Manganese

• Molybdenum

• Nickel

• Potassium

Which of the following is a method of fertilizer application in which water-soluble fertilizers are distributed through irrigation?

• Banding

• Broadcasting

• Side-dressing

• Fertigation

Cover crops that are planted in fields to improve soil structure, minimize erosion, and add nutrients are an example of which organic material?

• Animal wastes

• Green manures

• Industrial and municipal wastes

• Plant residues

Which of the following is the process of soil-dwelling bacteria oxidizing ammonium ions?

• Ammonification

• Assimilation

• Dentrification

• Nitrification

Which of the following is not a micronutrient?

• Boron

• Calcium

• Chlorine

• Copper

Which micronutrient is a component of cell walls and is involved in DNA and RNA synthesis?

• Boron

• Chlorine

• Iron

• Manganese