Q6 of 15 Page 141

Classify the following chemicals based on the uses given below.

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



Fertilisers are nutrients added to the soil which help in healthy growth of plants. Over time, after repeated cultivation of the soil, the minerals in the soil may get depleted which, and fertilizers may need to be added. Hence, fertilizers are mostly minerals such as Phosphorus, Potassium, and Nitrate (these three are very essential, and commonly found in many fertilizers)


Weedicides are chemical substances that destroy the weeds but do not harm the crops. For example 2-4-Dicholophenoxyacetic acid (2-4-D), Dalaplon and Metachlor


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4

Name the types of irrigation related to the following figures.


A)_____________



B)_____________



C)_____________



D)______________

 5

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

 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.

 7

Classify the following items based on the storage methods.

(Apple, Wheat, Potato, Rice, Grape, Sorghum)