NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF AGRICULTURAL SCIENCE
JANUARY 2013 EXAMINATION

  INSTUCTION:  ANSWER  ANY FOUR QUESTIONS IN TWO HOURS

              All Questions weighs 15 marks

              Total marks obtainable=60

Question 1

Describe the production of annual crops under the following headlines

1. Staking  ( ii)  Weeding  (iii)  Thinning  (iv) supplying,  ( v) Pruning

Question2

1. List any six fertiliser types used on annual/ arable fields
2. List any six herbicides used for weed control
3. List any six tools used in the production of annual crops
4. Write an explanatory note on how crop or field rotation can improve  crop yield.

Question3

1. List any five crops in the family  Gramineae using botanical names on
2. List  the varieties of maize and write a short descriptive note on each
3. Describe maize production under the following headline.

1. Climatic requirement
2. Soil type
3. Field establishment(sowing date, sowing depth, seed rate, spacing)

Question 4

1. List any five crops in the family   Pulses using botanical names
2.  

1. List any 3 insect pests of cowpea
2. List any 3 diseases of cowpea
3. List any 3 special botanical features of leguminous crops

C)Describe the production of cowpea under the following headlines

i ) Climatic requirement

ii) Soil type

3. Field establishment(sowing date, sowing depth, seed rate, spacing)

Question 5

1. List, using botanical name, to identify crops that falls under the category   called root and tubers
2. Discuss cassava production under the following subjects

1. preparation of planting material
2. Sowing and sowing date
3. Climatic requirement
4. List one insect pest, disease and rodent pest of cassava

Question 6

1. List any 3 crops that are produced for the sake of their fibre value
2. List the 2 species of cotton grown in Nigeria
3. Discuss cotton production under the following heading                               

1. Soil and climatic requirement  
2. Crop establishment
3. Legislative pest control on cotton