Question 1 of 20 50 total questions
Control of maize stem borer is most effective when
A affected crops are uprooted and burnt
B rodenticides are applied
C nematicides are applied
D ferilizers are applied before planting
Weeds which produce large hollow seeds would most likely be dispersed by
A wind
B water
C insect
D explosion
Cultural control of crop diseases involves the following practices except
A practising crop rotation
B planting disease resistant varieties
C using insecticides
D fallowing of farmland
An example of fungal disease of stored grain is
A mould
B streak
C mosaic
D damping off
Causal organismss of diseases in crop production do not include
A viruses
B bacteria
C fungi
D protozoa
Calculate the amount of maize seeds required by a farmer to cultivate 5 hectares of farmland at the recommended seed rate of 25kg/hectare
A 50kg
B 75kg
C 100kg
D 125kg
The offspring which will result from a cross between heterozygous and homozygous dominant plants will be
A 100% heterozygous
B 70% heterozygous
C 50%heterozygous
D 20%heterozygous
A farm produce which does not require fermentation during processing is
A cocoa beans
B coffee beans
C cassava tubers
D rice grains
Which of the following statements about budding is not true? The resulting crops
A can withstand adverse climatic conditions
B flower and bear fruit early
C develop broader leaves for photosynthesis
D are more disease resistant
The following plants are forage grasses except
A Pennisetun purpureum
B Panicum maximum
C Axonopus compressus
D Calopogonium mucunoides
Theobroma cacao grows best in the
A sudan savannah zone
B humid rain forest zone
C mangrove swamp forest zone
D northern guinea savannah zone
A bag of fertilizer has a ratio of 10:0 written on it. This means that the fertilizer is a
A lime fertilizer
B nitrogenous fertilizer
C phosphate fertilizer
D potassium fertilizer
Continuous soil tillage could lead to
A increased infiltration of water .
B reduced run-off
C break down of soil structure
D improved soil texture
Which of the following pairs of farming systems uses bush fallowing?
A crop rotation and land rotation
B shifting cultivation and land rotation
C land rotation and mixed farming
D crop rotation and monoculture
A major disadvantage of monoculture is that
A soil texture is destroyed
B soil microbes are destroyed
C diseases and pests build up
D farms cannot be mechanized
A mass of decayed plant and animal wastes processed in pits is referred to as
A green manure
B farmyard manure
C compost manure
D inorganic manure
What is the function of nitrosomonas bacteria in the nitrogen cycle?
A Ammonification
B Nitrification
C Denitrification
D Nitrogen fixation
Nutrient replenishment in soil can be enhanced by
A crop removal
B leaching
C erosion
D crop rotation
The major factor affecting distribution of crops in West Africa is
A climate
B soil
C topography
D disease
Which of the following is not an effect of over-graing on soil?
A Improvement of soil structure
B soil compaction
C exposure of soil to erosion
D depletion of soil nutrients
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