Agricultural Science Past Questions and Answers

Discuss briefly: (a) Temperature; (b) Relative humidity; (c) Light; in relation to poultry production and state two ways of controlling the effect of each.

(a) Write short notes on the following systems of breeding: (i) In-breeding; (ii) Line-breeding; (iii) Cross-breeding
(b) State three methods of collecting semen from a proven male for use in artificial insemination.

(a) State the law of diminishing returns as it applies to agricultural production. [2 marks] Study the table below and use it to answer questions (b) and (c).

Size of farm (ha)	Qty of fertilizer used (bags)	Yield of maize (bags)	Change of Qty of fertilizer	Change in yield of maize (bags)
2	0	8	-	-
2	8	24	-	-
2	12	48	-	-
2	26	80	-	-
2	20	120	-	-
2	24	150	-	-
2	28	170	-	-
2	32	180	-	-
2	34	180	-	-
2	36	170	-	-

(b) Complete the table above. (c) Draw a graph from the provided data and use it to explain the law of diminishing returns

Which of the following occupations is not associated with agriculture?

Which of the following occupations is not associated with agriculture?