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A groundnut plant showing stunted growth with yellow or mottled leaves is likely to be infected with
An effective method of preventing viral diseases in crops is by
A disadvantage of vegetative propagation is that
Hibiscus and croton are examples of
Ornamental plants are commonly used for the following purposes except
Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is crossed with a homozygous black cowpea?
One advantage of cross breeding is that the
Which of the following plants is not a pasture grass?
Thinning is a farm operation in which
A groundnut variety produces a steady yield of 350kg per hectare. What will be the yield of the variety on a 10-hectare farm?
Which of the following crops is usually classified as a vegetable?
Which of the following statement describes an advantage of underground drainage? It
The use of inorganic fertilizer is preferable to organic manure because inorganic fertilizer
Which of the following practices does not replenish lost soil nutrients?
A beneficial effect of bush burning on the soil is the
The purpose of the part labelled I in the experiment illustrated above is to
The aim of the experiment illustrated above is to
The structure of loam could be described as
The chemical composition of soil is mostly influenced by
Which of the following is an example of igneous rock?