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Chapter 37: Q37-5TYU (page 819)

Some of the problems associated with intensive irrigation include all of the following except

(A) soil salinization.

(B) overfertilization.

(C) land subsidence.

(D) aquifer depletion

Short Answer

Expert verified

  1. The option 鈥渟oil salinization鈥� is false.

  2. The option 鈥渙verfertilization鈥� istrue.

  3. The option 鈥渓and subsidence鈥� is false.

  4. The option 鈥渁quifer depletion鈥� is false.

Step by step solution

01

Irrigation

The method of applying water or other required nutrients to the fields to assist in the production of crops is called irrigation. Surface irrigation, drip irrigation, and sprinkler irrigation are some examples of irrigation.

Intensive irrigation involves the usage of high chemicals, fertilizers, and pesticides. The chemicals deposit in layers of soil and also decrease the fertility of the soil.

02

Explanation of option (A)

The accumulation of salt content in the soil is known as salinization. Intensive irrigation leads to the deposition of salts in the ground.

Therefore, salinization is harmful to the growth of the plants and also affects the soil quality.

Thus, the given option is false.

03

Explanation of option (B)

When soil is rich with humus, micro, and macronutrients, it is called fertile soil. Overfertilization occurs when commercial fertilizers are added to the crop field.

Therefore, overfertilization does not occur due to intensive irrigation.

Thus, the given option is true.

04

Explanation of option (C)

Land subsidence in crop fields occurs due to excessive farming. It is one of the results of intensive irrigation.

Therefore, land subsidence is caused due to intensive farming, which includes an intensive irrigation system.

Thus, the given option is false.

05

Explanation of option (D)

The withdrawal of water from the ground for irrigation is the primary cause of aquifer depletion.

Therefore, aquifer depletion is the result of intensive irrigation, which impacts the precipitation of the water cycle.

Thus, the given option is false.

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Most popular questions from this chapter

The greatest difference in health between two groups of plants of the same species, one group with mycorrhizae and one group without mycorrhizae, would be in an environment

(A) where nitrogen-fixing bacteria are abundant.

(B) that has soil with poor drainage.

(C) that has hot summers and cold winters.

(D) in which the soil is relatively deficient in mineral nutrients.

Draw a simple sketch of cation exchange, showing a root hair, a soil particle with anions, and a hydrogen ion displacing a mineral cation.

Imagine taking the plant out of the picture in Figure 37.12. Write a paragraph explaining how soil bacteria could sustain the recycling of nitrogen before land plants evolved.

How would adding clay to loamy soil affect capacity to exchange cations and retain water? Explain.

Making a footprint in the soil seems like an insignificant event. In a short essay (100鈥�150 words), explain how a footprint would affect the properties of the soil and how these changes would affect soil organisms and the emergence of seedlings.
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