Session 1 nature starter

Step 2. Choose the title for the passage. Explain your choice.
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Step 3. Match each topic in A with two items in B.
A B

Drip irrigation applied as a small discharge to each plant subdivided into furrow, borderstrip or basin irrigation
Surface irrigation water is distributed under low pressure water falls drop by drop
Localized irrigation trickle irrigation flood irrigation

Step 4. Fill in the gaps and complete the text with the words in the box.
Water	Types	Source
Plant	Efficient	Supply

Various … of irrigation techniques differ in how the water obtained from the … distributed within the field. In general, the goal is to … the entire field uniformly with
…, so that each … has the amount of water it needs, neither too much nor too little.
The modern methods are … enough to achieve this goal.
Step 5. Pay attention to the topic sentences and complete with controlling ideas.

1. 
   The water in this system falls drop by drop just at the position of roots.
   

It deals with the drip irrigation technique._______________________________

2. 
   In general, the goal is to supply the entire field uniformly with water, so that each plant has the amount of water it needs, neither too much nor too little.
   

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3. 
   It is often called flood irrigation when the irrigation results in flooding or near flooding of the cultivated land.
   

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4. 
   Drip irrigation, spray or micro-sprinkler irrigation and bubbler irrigation belong to this category of irrigation methods.
   

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QUESTIONS:
1.What is irrigation?
2.What is it called when the irrigation results in flooding?
3.What is the system of localized irrigation?