(a) Distinguish between spacing and thinning in... | WAEC SSCE - Agricultural Science - 2019

Question 1 Report

(a) Distinguish between spacing and thinning in crop production.

(b) Discuss the cultivation of oil palm under the following headings:
(i) botanical name;
(ii) two varieties;
(iii) method of propagation;
(iv) soil requirement;
(v) spacing on the field;
(vi) Diseases.

(d) What is apiculture?

Answer

Answer Details

(a) Spacing and thinning distinguished

Spacing	Thinning
The recommended distance left between one stand (and one row) and another at the time of planting.	The removal of excess seedlings from a stand after germination, leaving the required number of healthy plants.

(b) Cultivation of oil palm

(i) Botanical name: Elaeis guineensis.
(ii) Two varieties: Dura and Tenera.
(iii) Method of propagation: By seed (sexual). Pre-germinated seeds are raised in a pre-nursery and nursery before the seedlings are transplanted to the field.
(iv) Soil requirement: Deep, well-drained, fertile loamy soil that is rich in organic matter and slightly acidic.
(v) Spacing on the field: About 9 m by 9 m triangular (giving roughly 143 palms per hectare).
(vi) Diseases: Blast disease, freckle/leaf spot, and vascular (Fusarium) wilt.

(c) Six ways forest resources are important to the economy of West Africa

They supply timber for building and furniture.
They provide fuel wood and charcoal.
They supply raw materials for industries (pulp, paper).
They provide employment and income.
They are a source of medicinal plants and food (fruits, bush meat).
They earn foreign exchange through export of forest products.

(d) Apiculture

Apiculture is the practice of keeping and rearing honey bees in hives for the production of honey and beeswax.

Read lesson note on Crop Husbandry (JAMB)

Read lesson note on Forest Management (Silviculture) (JAMB)

Crop Husbandry

Forest Management (Silviculture)

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(a) Distinguish between spacing and thinning in crop production. (b) Discuss the cultivation of oil palm under the following headings: (i) botanical name; (...

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(a) Distinguish between spacing and thinning in crop production. (b) Discuss the cultivation of oil palm under the following headings: (i) botanical name; (...

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