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Insect-pests of crops could be controlled by
Which of the following pairs of diseases attack coffee?
Which of the following practices is not a way of maintaining ornamental plants?
Which of the following methods of plant propagation is limited to plants which root easily?
A raw material that could be obtained from the forest is
A breeding method which involves the production of heterozygous populations from homozygous lines is
Imported plants are expected to be
Heat treatment of oil palm seeds before sowing helps to
The correct sequence of pre-planting operations in
If rows of crops are spaced 1.0m apart with one seed sown per stand, determine the spacing between stands to obtain a plant population of 40,000 plants per hectare.
In the above diagram, what crop roots are represented?
The presence of excess water in the colloids of soil particles is known as
Flood irrigation is used for the cultivation of
In the carbon cycle, carbon dioxide is used by crops for
Inhibition of root and fruit formation are deficiency symptoms of
Which of the following statements is not correct about soil texture?
Which of the following agents is not associated with chemical weathering?
Predators are used by farmers to
The following are climatic conditions affecting agricultural production except
A social factor which affects land availability and use is