NPK, EC, PH Quiz

What is the main nutrient found in NPK fertilizer?

(a)  

• Calcium, Magnesium, Sulfur

• Nitrogen, Phosphorus, Potassium

• Iron, Zinc, and Copper

• Carbon, Hydrogen, Oxygen

How do you measure the electrical conductivity of soil?

• By tasting the soil

• Using a soil conductivity meter

• Using a ruler

• Guessing based on the color of the soil

What is the ideal pH level for most plants to grow?

• Exactly 7.0

• Below 5.0

• Between 5.5 and 7.0

• Between 8.0 and 9.0

What are the effects of nitrogen deficiency on plant growth?

(a)  

• Stunted growth and yellowing of lea
• Increased growth and greener leaves
• Enhanced growth and browning of lea
• Decreased growth and wilting of lea

What are the effects of phosphorus deficiency on plant growth?

• Phosphorus deficiency leads to excessive growth and rapid maturity in plants

• Phosphorus deficiency can lead to stunted growth, delayed maturity, and poor root development in plants.

• Phosphorus deficiency causes plants to produce more flowers and fruits

• Phosphorus deficiency has no effect on root development in plants

What are the effects of potassium deficiency on plant growth?

• Potassium deficiency can lead to stunted growth, reduced yield, and increased susceptibility to diseases and pests.

• Potassium deficiency has no effect on plant growth

• Potassium deficiency causes plants to become more resistant to diseases and pests

• Potassium deficiency leads to faster growth and higher yield

What is the impact of high electrical conductivity in soil on plant growth?

• Increased plant growth and improved nutrient absorption

• No impact on plant growth

• Decreased plant growth and increased susceptibility to pests and diseases

• Reduced plant growth and stress due to toxicity of certain ions

Acidic soil affects plant growth by (a)   .

• It increases the availability of es
• It reduces the availability of esse
• It has no effect on plant growth
• It decreases the toxicity of certai

How does alkaline soil affect plant growth?

• It only affects the color of the plants

• It promotes plant growth by providing essential nutrients

• It can hinder plant growth by affecting nutrient availability.

• It has no effect on plant growth

How can you adjust the pH level of soil to make it suitable for plant growth?

• Add materials such as lime to raise the pH or sulfur to lower the pH

• Water the soil more frequently to raise the pH

• Mix the soil with sand to lower the pH

• Use fertilizer to raise the pH