Explain the methods of controlling insect pests. - Vidyadip

Question

Explain the methods of controlling insect pests.

✓

Answer

Controlling insect pests:

Root cutting type of insects is controlled by mixing insecticides in the soil.

Example: Chloropyriphos.

Stem and leaf cutting type of insects can be controlled by dusting or spraying the contact insecticides.

Example: Malathion, lindane and thiodan.

All sap sucking insects can be controlled by spraying systematic insecticides.

Example: Dimethoate and metasystox.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 3 Mark )" from Improvement in Food Resources→Improvement in Food Resources — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Explain any one method of crop production which ensures high yield.

Explain why particles of a colloidal solution do not settle down when left undisturbed, while in the case of a suspension they do.

A 60g bullet fired from a 5kg gun leaves with a speed of 500m/s. Find the speed (velocity) with which the gun recoils (jerks backwards).

A car of mass 2400kg moving with a velocity of 20ms^-1 is stopped in 10 seconds on applying brakes. Calculate the retardation and the retarding force.

Define the following terms: (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.

Match the following column with correct answers.

	Column I		Column II
a.	Fungal disease	i.	Dengue fever
b.	Viral disease	ii.	Cholera
c.	Protozoan disease	iii.	Skin disease
d.	Bacterial disease	iv.	Malaria

Describe the structure and functions of nucleus.

Write a note on lichens.

How many centres have been established in India for artificial insemination of cows and buffaloes?

“Multicellular organisms show division of labour.” Explain the statement with the help of example.