NATIONAL OPEN UNIVERSITY OF NIGERIA
91, CADASTRAL ZONE, UNIVERSITY VILLAGE, JABI, ABUJA
FACULTY OF AGRICULTURAL SCIENCES DEPARTMENT OF CROP AND SOIL SCIENCES
2020_2 SEMESTER EXAMINATION 1234
EXAMINATION: SECOND SEMESTER EXAMINATION 2020_2 COURSE: ARABLE CROP PRODUCTION
COURSE CODE: ACP301 TOTALSCORE: 70 MARKS
TIME ALLOWED: 2hours 30 minutes
INSTRUCTION: Answer FOUR Questions in all. Question 1 is compulsory (25marks) and any three questions (15 marks each)
a) Give a description of annual crops according to
(i) Longevity/life span (ii) Growth pattern/ crop architecture
b) Classify annual crops according to uses.
c) (c) State at least one industrial use of any five annual crops
d) (d)List any five cultural practices on the farm
a) List (using the scientific names only of) any two arable crops in each category of uses.
b) List any two crops in the category of (i) annual (ii) bi-annual crops
c) Write short notes on the following:
(i) Sexual reproduction
(ii) Asexual reproduction
a) List any five climatic factors to be considered in setting up an arable field
b) List any five edaphic factors to be considered in setting up an arable field.
c) Explain the advantages of having a good seed bed preparation
a) Write a short explanatory notes on each of the following
( i) Weeding.( ii) Mulching ( iii) Thinning (iv) Supplying ( v) Pruning ( vi) Staking
b) State any 2 groups of organisms causing plant diseases or reduction in crop yield.
a) List any four mineral fertilisers used in the production of arable crop.
b) Identify all the elements fund in fertiliser
c) Describe four methods of fertiliser application
a) Describe harvesting and Four tools for harvesting.
b) List four harvest indices
c) Describe Four primary processing methods