NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF MANAGEMENT SCIENCES
APRIL 2019 EXAMINATION

COURSE TITLE: ARABLE CROP PRODUCTION                                                                               

COURSE CODE: ACP301          

CREDIT UNIT: 2 Units                                                                           

TIME ALLOWED: 2 ½ hours                                                                                                           

INSTRUCTION: Answer four questions in all. Answer question one compulsorily (25 marks)

                And three (3) other Questions (15 marks each)

Question 1.  a)    Give a description of annual crops according to                                                                                                                                            

(i) Longevity/life span  (3mrks.)

 (ii) Growth pattern/ crop architecture   (3mrks)                                                

(b)  Classify annual crops according to uses.  (5mrks)

(c) List at least any two crops that can be propagated using (i) sexual    (2mrks)

(ii) a-sexual processes.     (2mrks)

d) Use scientific names and common names to identify the listed annual crops  (10 marks).

(i) Maize,

(ii) Sorghum,

(iii) Rice,

(iv) Millet,

(v) Yam

(vi) Cassava

(vii) Cotton

(viii) Beans

(ix) soybean

(x) groundnut.

Question Two

1. List, (using the scientific names only of) any two oil yielding arable crops in each category of uses   (5 marks)

b) List any two crops in the category of

 (i) annual     (2 ½ Mrks)

(ii) bi-annual crops  (2 ½Mrks)

c) Write short note on the following:

(i) Sexual reproduction   (2 ½ Mrks)

(ii) Asexual reproduction    (2 ½Mrks)

Question Three

1. List any five climatic to be considered  in setting up an arable field         (5 Mrks)
2. List any five edaphic factors to be considered in setting up an arable field.    (5 Mrks)
3. Explain Five  the advantages of having a good seed bed preparation              (5 Mrks)

Question four.

Write a short explanatory note on any five of the following on:  

(i) Weeding.

(ii)   Mulching

(iii) Thinning

(iv) Supplying

(v) Pruning

(vi)   Staking    (3Mrks each = 15 marks)

Question five

1. List any six mineral fertilisers used in the production of arable crop.                       (6 Marks)
2. Describe four methods of fertiliser application   (4 marks)
3. Listany five groups of organisms causing plant diseases or reduction in crop yield.  (5marks)

Question six

(ai)  Define harvesting (2marks)

(aii)  List anyfour tools for harvesting  (4marks)

1. List of four harvest indices   (3 marks)
2. identify four primary processing methods and explain why primary processing is important.(6 marks)