[Waec Answer] Waec 2018 Agricultural Science Practical Questions And Answers Now Posted
Agric Practical Questions And Answers.
1a) Specimen A
i) It is used for falling of trees
ii) It is used for cutting the roots during stumping.
iii) It is used for cutting logs of woods into smaller pieces
i) It is used for lifting and tuning the soil
ii) It is used for levelling of the soil
iii) It is used for digging holes during transplanting
i) It is used for transplanting of seedling
ii) It is used for applying manure after and before planting
iii) It is used for nursery operation / practice
i) It is used for pulverizing the soil
ii) it is used for aerating the soil
iii) It is used for transplanting seedlings
i) The Metal part should be sharpened when blunt
ii) The metal part should be oiled or greased to prevent rusty
iii) The wooden part should be stored or kept in a place that termite cannot eat it
iv) Store in a cool and dry place
Specimen G – Ph = 7 (neutral)
Specimen H – Ph = 1-4 (acidic)
Specimen I – Ph = 8-14 (alkaline or bionic)
(2b) Specimen G:
When G is added to water sample in a glass beaker and stored with blue and red litmus paper, No colour change was observed, showing neutral.
When H is added to a water sample in a beaker and stirred and tested with blue and red litmus paper. It changes blue litmus paper to red showing that it is acidic.
When I is added to a water sample in a beaker and stirred/tested with litmus papers. It changes the red litmus paper to blue showing that it is basic or alkaline.
If the Ph is 4.5 it shows that it is slightly acidic
i) It destroys the root of plant
ii) It prevent the uptake of food from the root system
iii) it prevent the normal growth of plant except plant like tomatoes
i) Washing away of soil nutrients by erosion
ii) Planting operations like Monocropping
iii) Excessive use of land of a long period of time
J – is weavil
K – is beetle
L – is mosaic disease
M – is fruit rot
i). It Causes Low Yield
ii). It Reduces The farmers income
iii). Transmission of diseases
iv). It causes the death of plants
v). They bore into seed
(3c) SPECIMEN J
(i) by the use of chemicals
(ii) by the use of pesticides
(iii) through and picking
(i) through the use of pesticides
(ii) by handpicking
(iii) by the use of chemicals
(i) through the practise of crop rotation
(ii) by using fungcidese
(i) through the use of rodenticide
(ii) by setting traos for the rodents
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