NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF AGRICULTURAL SCIENCE
JUNE/JULY 2018 EXAMINATION

COURSE CODE: ACP301

COURSE TITLE: ARABLE CROP PRODUCTION (ACP301) 2 CREDIT COURSE                         

INSTRUCTIONS: ANSWER FOUR (4) QUESTIONS. QUESTION 1 IS COMPULSORY AND ANY OTHER THREE (3) QUESTIONS

TIME ALLOWED:           2HRS 30 MINS

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

(i) Longevity/life span (3 Mrks.)

 (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

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

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: (3Mrks each))

(i) Weeding. (ii)   Mulching (iii) Thinning (iv) Supplying (v) Pruning (vi)   Staking

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)