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Hort 041:Horticultural Crops Protection Question Paper

Hort 041:Horticultural Crops Protection

Course:Agriculture

Institution: Kenya Methodist University question papers

Exam Year:2013

KENYA METHODIST UNIVERSITY

END OF 1''ST ''TRIMESTER 2013 (DAY) EXAMINATION
FACULTY : SCIENCE & TECHNOLOGY
DEPARTMENT : AGRICULTURE AND NATURAL RESOURCES
UNIT CODE : HORT 041
UNIT TITLE : HORTICULTURE CROPS PROTECTION
TIME : 2 HOURS

SECTION A

Answer all questions

Question One

Define the following terms;

Insecticide

(2 Marks)

Quarantine

(2 Marks)

Pathogen

(2 Marks)

Name any two harmful effects of toxicity.

(4 Marks)

Question Two

What is the magnitude of agricultural produce losses caused by pests in the tropics?

(2 Marks)

Name the three methods that would prevent the spread of pathogens to areas where they do not exist.

(4 Marks)

What are the three parts of the regulations governing the importation of plant materials?

(6 Marks)

Question Three

What are the two classes of insects?

(4 Marks)

Name any eight pesticides used in crop protection.

(4 Marks)

SECTION B

Answer any two questions

Question Four

Comment briefly on each of the following;

Edible annual weeds.

(5 Marks)

Medicinal annual weeds.

(5 Marks)

Discuss the various methods of weed control.

(10 Marks)

Question Five

How are virus diseases transmitted from plant to plant?

(10 marks)

(i) What are pathogens? Name four of them.

(4 Marks)

Name six common control measures of fungal diseases.

(6 Marks)

Question Six

Name

The three stages in the process by which the insect establishes normal feeding on its host plants.

(3 Marks)

Two methods of classifying posts by the way they feed on plants.

(4 Marks)

Comment briefly on non-infections plant diseases.

(9 Mar

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