Crop Protection Management

Q.

What are the factors for which variety improvement of the crop is done?

Q.

What are the different ways an insect can affect a plant?

1. They cut the root, stem and leaf

2. They suck the cell sap from various parts of the plant

3. They bore into stem and fruits

4. They help the plant to grow by eating away the harmful toxins present in the plant

Q. Which of the following diseases is a soil-borne disease?

1. Rust of wheat
2. Smut of Bajra
3. Blast of rice
4. Red rot of sugarcane

Q.

Discuss the various methods which are used to control plant diseases.

Q. What are the advantages of insect resistant varieties?

Q.

What is crop rotation? Write four advantages of crop rotation.

Q. What are silos and granaries?

1. These are metallic bins for storage
2. These are wayside storage bins
3. Use of neem leaves to protect the grains
4. These are large scale godowns for storage of grains and to protect them from insects, rats and other pests

Q.

Which crop is associated with a disease called red rot?

Q.

Which amongst the following is a fungicide?

1. BHC

2. 2-4 D

3. DDT

4. Bordeaux mixture

Q.

State the difference between Decay and putrefaction.

Q.

List the major groups of activities for improving crop yield ?

Q.

Classify plant diseases depending upon their occurrence and transmission.

Q.

Rotation of crops helps in:

1. Attacking insects

2. Altering chemical nature of soil

3. Improving soil fertility

4. Proliferating weed

Q.

Name the following :

(a) seed borne disease ;

(b) air borne disease.

Q.

Question 1
Why should preventive measures and biological control methods be preferred for protecting crops?

Q.

Which among the following are biotic factors which cause crop storage losses?

1. Frost

2. Insects

3. Temperature

4. Drought

Q. All of the following are used as biofertilizer, except___________.

1. Cultures of Rhizobium
2. Anabaena
3. Mycorrhizae
4. Turmeric

Q.

What are the desirable agronomic characteristics for crop improvement?

Q. Person X and Y were successful in growing 1 kg of wheat grains and stored it in the storage room. After a while, person X noticed the decolouration of the grains and complains to person Y about it who then explains the reason for this.
Which of the reasons was explained by the person Y for decolouration of grains in storage room? [2 Marks]

Q.

What is the advantage of using insect resistant varieties ?

Q. Proper soil and seed preparation methods for the protection of crops are ___ measures.

Q.

Which amongst the following is a fungicide?

1. BHC

2. DDT

3. Bordeaux mixture

4. 2-4 D

Q. Question 1
Why should preventive measures and biological control methods be preferred for protecting crops?

Q.

Hay fever and asthma are allergies.

1. True
2. False

Q.

Name the crop plant which is affected by red rot.

Q. Mention the biotic and abiotic factors that affect crop growth.

Q. What are some important preventive and control measures adopted for the storage of grains?
[1 Mark]

Q. Which of the following is a biotic factor that affect crops?

1. Nematodes
2. Drought
3. Salinity
4. All of the above

Q. The health of the crops is affected by pests.

1. True
2. False

Q.

Which among the following is a biotic factor that causes crop storage loss?

1. Insects

2. Drought

3. Frost

4. Temperature