7/28/2019 PEST AND DISEASE FOR PLANT

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Bayu Fitriana 12/8E

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PEST AND DISEASE FOR PLANT

Indicator 1.

To explain the difference in plant diaseasesAnswer the questions below correctly and briefly!

1. What are the differences between pests and diseases in plant?-Pest: can be seen by naked eye,Commonly from the group of

animal(rat,bird,insect,caterpillar and soon),Pest attack easier to be

overcome becausethe pest appears by eye or it can be seen directly

-Disease:The cause of disease is hardly seen by naked eye,The cause of disease

are microorganism(virus,bacteria,fungi,or mushroom)and lack of

certain substance in the soil,Disease attack commonly is in indirect so

the plant dies slowly

2. Explain why the destruction of plant disease is harder than destruction of plant

pest?Because destruction of plant pests can be seen by eye or can be seen directly,

while destruction of plant disease commonly is in indirect so the plant dies slowly

3. Why pest is easier observed compared to disease?Because pest can be seen by

naked eye while disease attack is hardly seen by naked eye

4. Write down the groups of animal that are included into plant pest! Give their

examples! -The group of mammal,such as rat

-The group of insect,such as grasshoper

-The group of bird(aves),such as sparrow

5. Write down the organism that often causes plant is infected by

disease!virus,bacteria,mushroom,or fungi

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Indicator 2.

To identify the organism that cause diseases and pests in plant

Answer the questions below correctly and briefly!

1. Mention some example of pests and diseases in plant!-Pests:Potato Tuber Perforator Pest,Cabbage Leaf Eater Pest,Thrips Pest in

Chili,Pest in Garlic,Tomato Fruit Perforator Pest,Green Bean Perfoarator

Pest,Mango Fruit Perforator Pest

-Diseases:Blight Disease of Potato Leaf,Cabbage Wet Rotten Disease,Disease in

Cabbage,Chilu Withered Disease,Violet Spots Disease in Garlic,Leaf Rotten

Disease of Onion,Leaf Spots Disease in Asparagus Branch

2. What kind of virus that cause faded and die of cucumber?kind of virus that cause

faded and die of cucumber is Fusarium oxysporum f.sp. cucumerinum

3. Write down treatment effort that can be done to destroy disease in chili whitred

disease!Treatment effort that can be done to destroy disease in chili whitred disease

cam be done by decreasing bacteria population in soil by covering soil with

transparant plastic for one month,making plant rotation,regulating irrigation,and

chemically by using bactericide also soil sterilization

4. Explain the following terminologies.

a. Bactericide:Material or substance that able to destroy/kill bacteria

b. Fungicide:Material or substance that able to destroy/kill fungi,mushroom,and

testacean

c. Sterilization:Treatment to make a material or thing free from microorganisms

by methods of heating,radiating,or by using chemical substance to

destroy living minute particle or its spore

5. What kind of fungi that cause violet spots disease in garlic?fungi that cause violetspots disease in garlic is Alternaria porri