EXAM CHOCKS: 2016 WAEC GCE AGRICULTURAL SCENIC OBJ & ESSAY NOW POSTED FOR FREE

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AGRIC ESSAY
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3ai)fungi
3aii )Rain and wind can spread disease, as well as insects and irrigation water .
3aiii )chlorosis of the onion leaves occurs,
3aiv )i)Bury or flail infected crop residues after harvest to promote decomposition
.ii )Avoid overhead water and over-watering , especiallyin transplant production .

3b )i)They feed on natural fibers
ii )They have a direct impact on agricultural food production by chewing the leaves of crop plants
iii )They reduce crop yield
iv )they reduce the quality of crops
v )they cause retarded growth of crops.
3c )i)Select boars that are free from defects
ii )grow faster than average
iii )have less backfat than the average of the breed
iv )have eaten less feed than average to reach a specific weight

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1a)They help to educate the farmers on new farming techniques-
They help provide agricultural shows and talks to the farmers-
They help to provide improved seedlings to the farmers-
They help to provide pesticides to the farmers-They help to train the farmers on better planting methods as newly developed

1di) The knapsack sprayer is used for applying pesticide to the crops-The knapsack sprayer is used for applying fertilizer to the soil

1dii)-Cultivators.-Harrow.-Planks and rollers

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2a)The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H.
2b)i. Inefficient Use Of Nitrogen
.ii. Increase in the concentration of hydrogen ions in the soil
iii. removal of product from the farm or paddockiv. build up in organic matter

2c) i. Agricultural Limestone.
ii. Wood ashes.i
ii. Organic matter
2e.I)cowpea-Vigna unguiculata(underlined). Ii)Rubber-Hevea brasiliensis(underlined)
Iii)Oil palm-Elaeis guineensis(underlined).
Iv)Yam-Dioscorea alata(underlined).
V)cocoa-Theobroma cacao(underlined)