Ag Tech Review

What are the 3 nutrients required on fertilizer labels?

• NDA

• NPK

• KPH

• CHN

Select all of the following that are macronutrients.

• calcium

• zinc

• copper

• sulfur

• magnesium

If you have an acidic soil, what should you add if you want to raise the pH?

• sulfur or gypsum

• salt

• lime

• calcium

What does the term acidic mean?

• pH of 7-14; low

• pH of 7-14; high

• pH of 0-7; low

• pH of 0-7; high

What does the term alkaline mean?

• pH 7-14; high

• pH 7-14; low

• pH 0-7; high

• pH 0-7; low

Define deficiency.

• too much of a nutrient

• just enough of a nutrient

• not enough of a nutrient

What is the optimum pH range for most plants?

• 4.0-5.0

• 6.0-7.0

• 8.0-9.0

If a plant turns a purple to brown color, what deficiency does it likely have?

• nitrogen

• potassium

• calcium

• phosphorus

If a plant has brown, crispy edges, what deficiency does it likely have?

• magnesium

• potassium

• nitrogen

• phosphorus

most vegetable crops prosper in soil with a PH range of 5.5 to 7.5, which means that most vegetables prefer a soil that is

• more acidic than alkaline

• more alkaline than acidic

• more neutral than acidic or alkaline

• only alkaline