pH in Agriculture

What is the effect of pH on nutrient availability in soil?

• The higher the pH, the less nutrients are available to plants

• The pH of soil affects the availability of nutrients to plants.

• Nutrient availability in soil is only affected by temperature

• pH has no effect on nutrient availability in soil

How does pH affect plant growth?

• pH has no effect on plant growth.

• pH affects plant growth by influencing nutrient availability and soil microorganism activity.

• pH affects plant growth by changing the color of the leaves.

• pH affects plant growth by altering the plant's genetic makeup.

Why is it important to maintain the optimal pH level for nutrient availability?

• Maintaining the optimal pH level ensures the availability of essential nutrients for plants.

• Maintaining the optimal pH level helps plants grow faster.

• Maintaining the optimal pH level prevents nutrient deficiency in plants.

• Maintaining the optimal pH level improves the taste of fruits and vegetables.

Most crops grow best in soil that is close to neutral. What pH range below would be considered ideal for most crops?

• 8.0-9.5

• 6.0-7.5

• 2.0-3.5

• 4.5-5.5

How can pH affect the effectiveness of fertilizers?

• pH can only affect the color of the plants, not the effectiveness of fertilizers.

• pH has no effect on the effectiveness of fertilizers.

• pH can only affect the growth rate of plants, not the effectiveness of fertilizers.

• pH can affect the availability of nutrients in the soil and impact the effectiveness of fertilizers.

What are the potential problems that can arise from improper pH levels in agricultural practices?

• Nutrient deficiencies or toxicities in plants, reduced crop yields, soil degradation, and increased susceptibility to pests and diseases.

• Increased biodiversity, improved air quality, and reduced greenhouse gas emissions

• Improved plant growth, increased nutrient uptake, and reduced water usage

• Increased crop yields, improved soil quality, and reduced pest and disease susceptibility

Organize these options into the right categories

Groups:

(a) strong acid

,

(b) weak acid

,

(c) weak base

,

(d) strong base

• drain cleaner

• 12.5

• 2.5

• 6.5

• 8.9

• 5.5

• 1.2

• human blood

• milk

• 13

• battery acid

• 7.2

When water breaks down into ions, what does it form into? (mark ALL that are correct)

• H+ and OH-

• OH+ and H-

• an acid and a base

• water and salt

• H2O

if a liquid has a pH lower than 7, it is a(n) ​ (a)   . A liquid with a pH higher than 7 is a(n) ​ (b)   . A liquid with a pH of exactly 7 is a(n) ​ (c)   .

• acid
• base
• neutral
• H+
• OH-

The pH scale ranges from ​ (a)   at its lowest to ​ (b)   at its' highest.

• 0
• 14
• 7
• 1