NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: AEM 713
COURSE TITLE: TREE CROPS
TIME ALLOWED: 2HOURS
INSTRUCTION: ANSWER ANY FOUR QUESTION
QUESTION 1
⦁ Identify any 5 plantation crops commonly grown in Nigeria using their
(i) common (ii) botanical names only.
⦁ List any five products you can obtain from oil palm tree.
⦁ State any five economic importances of some specific tree crops.
Question 2
⦁ List any five climatic conditions required for consideration while attempting to set up a plantation of tree crops
⦁ List any three edaphic /soil factors that must be favourable in the choice of site for growing tree crops.
⦁ Briefly describe procedure for site preparation in setting up a plantation
Question 3. Write a short note on each of the following plantation crops field practices.
i) Pruning (ii) shading ( iii) Mulching (iv) propping (v) weeding in oil palm
Question 4.
⦁ List any five simple tools you will use on a plantation field.
⦁ List any 2 species that can be used as cover crops in cocoa
⦁ Give reasons why shading is required in cocoa plantation.
Question 5.
⦁ ( i)Mention any disease of cocoa tree (ii) name their causal organisms (iii) together with their mode of transmission.
⦁ List any three insect pests of plantation crops.
⦁ List any three group of pesticide used on cocoa pest control.
Question 6.
⦁ Describe any three methods of fertilizer application on plantation crops.
⦁ List any four quality indices of oil palm
⦁ Describe the methods of processing cola nut
For the 2015 – till date past questions for this course CLICK HERE
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