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

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The following are advantages of sub-surface irrigation except that

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Crop rotation decreases the incidence of pests by

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Tomatoes are staked in order to

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In crop production, ginger is propagated by

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

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The following crops will enrich the soil with nitrates except

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Yellow colouration of the lower leaves of a growing maize plant may be due to deficiency in

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

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The weight of a sheep increased from 25kg to 45kg in two months

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Soil water that is available for root absorption at field capacity is

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Which of the following insects transmits swollen shoot disease of cocoa?

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