NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: ACP 305
COURSE TITLE: PRINCIPLES OF CROP PREODUCTION
TIME ALLOWED: 2HOURS
INSTRUCTION: ANSWER ANY FOUR QUESTION
1)
(a) Define crop pests
(b) Discuss the economic importance of crop pests
(c) List any five categories of organisms that could be pests of cops
(d) List the categories of crop pests
2)
(a) List the general control measures of crop pests
(b) Briefly describe the economic importance of insects
c) List the characteristics features of insects that makes them function well as pests
3)
(a)
( i) Define weeds (ii) Weeding
(b) Discuss the effects of weeds in crop production
(c) Discuss the characteristics of weeds
4)
(a) List the categories of storage pests
(b) List three pests of storage products
© Discuss the damages caused by storage pests
(d) Discuss the precautionary measures for the control of pests in stored products
5)
(a) What is a disease?
(b) List the causal organisms of plant diseases
(c) List the categories of plant diseases causing agents
6
(a) Describe the symptoms of major plant diseases
(b) Discuss the general control measures of plant diseases.
c) Explain the following terms (i) symptoms (ii) Vector (iii) transmission
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