Limitations of farm mechanization in West Africa do not include

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The instrument which enables a surveyor to find the direction of a base line is

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Which of the following statement is a disadvantage of human power?

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The following are advantages of sub-surface irrigation except that

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The following fertilizers can be used to neutralize soil acidity except

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Which of the following groups of rocks is formed as a result of volcanic eruption?

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The following crops will enrich the soil with nitrates except

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A detrimental effect of bush burning is that it

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Which of the following statements about soil organisms is false?

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Which of the following properties of soil determines its water-holding capacity?

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Which of the following statements is correct about micro-nutrients? They

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In which layer of the soil profile do most biological activities occur?

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