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5.3. Find in Text b English equivalents of the following:

втручання, сільськогосподарські роботи, нечасто, значні відстані, горизонтальна ділянка, випаровування, штучне підґрунтове зрошення, за допомогою чогось, непроникний нижній шар ґрунту, рівномірно проникати у ґрунт, прокладати трубопровід, проходити під поверхнею ґрунту, принаймні, підземні магістралі, ідеальний профіль ґрунту, з теоретичної точки зору, безпосереднє зрошення знизу, підтримувати рівень ґрунтової води, придатний для сільськогосподарських культур.

5.4. Finish the following sentences according to the text:

1. Tile lines are expensive to provide ….

2. This method is ideal because ….

3. The disadvantage is that control of the water ….

4. Natural subirrigation lands are located ….

5. Roots of the crops and adjacent trees tend to ….

6. The application and control ….

5.5. Divide the text into parts, state the microtopics of each part and express the contents of each part in one or two sentences.

5.6. Using the Denotative Graph, retell Text B.

Denotative Graph.

5.7. Brainstorm the problems considered in the texts you have already read. In small groups summarize all the principal information and report the results of your discussion to the class.

TEST 9

I. Identify the one underlined word or phrase that must be changed in order for the sentence to be correct:

1. Often there is a need to supply large quantities of water, many of

A B C

which may seep out of the area.

D

2. The topography of the land should be smooth and approximite

A B C

parallel to the water table.

D

3. The disadvantages are that the special conditions is not often

A B C

obtained.

D

4. Backfilling of the mole hole with sand or gravel give a longer life to

A B C D

the channel.

5. By means of lateral ditches or tile drains, a water table is maintained

A B C

at some depth above the soil surface.

D

II. Choose the one word or phrase that best completes the sentences:

1. Lands suitable for this method of irrigation … rather limited.

a) is; b) has;

c) was; d) are.

2. Subsoil irrigation … a special combination of natural conditions.

a) is required; b) was required;

c) requires; d) requiring.

3. Within recent years this way of watering … adaptable to all the soil types.

a) are becoming; b) became;

c) has become; d) will become.

4. Subirrigation … water to the surface of the soil.

a) applies; b) has applied;

c) applied; d) doesn’t apply.

5. It was to be hoped that this system … a wide-spread use in the future.

a) find; b) will find;

c) finds; d) would find.

III. Complete the sentences matching the words from the column to the sentence gaps:

1. Where the necessary special … of soil, topography and water supply, subirrigation has many advantages.

1. mole hole

2. The underground mains may be of various … but agricultural drains are a common type.

2. suitable

3. Depth of the pipes depends upon soil and crop types but 12 to 18 inches will be … for small crops.

3. conditions

4. The distributor of water can also act as a … if necessary.

4. supply

5. Slow movement of the tractor results in the formation of better … .

5. drain

6. Under favourable conditions, it should be easy to control the … of water with a minimum of labour.

6. materials

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