Q5 of 15 Page 141

Label the diagram of the taproot system and write its significance.


The taproot system branches vertically downwards and spreads out into branches, namely secondary root, tertiary root and rootlets. This enables the roots to derive nutrients from deeper portions of the soil.


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3

Match the following

a) Furrow irrigation — to irrigate grapes, banana etc.,


b) Basin irrigation — used where soil can’t retain water.


c) Sprinkler irrigation — between two rows of crop.


d) Drip irrigation — paddy field.

 4

Name the types of irrigation related to the following figures.


A)_____________



B)_____________



C)_____________



D)______________

 6

Classify the following chemicals based on the uses given below.

(Phosphorus, 2-4-D, Potassium, Dalapon, Nitrate, Metachlor)


 7

● Mani is repeatedly cultivating same paddy crop in his field and getting poor yield.

● Nathan likes to go for changing the crops every season and getting good yield.


● From the above statements find out and justify the best method of agricultural practice.