WAEC GCE(FIRST SERIES)2022 AGRIC SCIENCE ESSAY AND OBJ-ANSWERS

AGRIC OBJ
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AGRIC-ANSWWERS
(3ai)
[Tabulate]
DISEASES
– Rosette
(i) CROP AFFECTED
– Groundnut
(ii) CAUSAL ORGANISMS
– Cercospora arachidicola
(iii) SYMPTOMS
– Elongated shoots.
(iv) TWO CONTROL MEASURE
– Give your roses plenty of space. …
– Control multiflora rose in your area.

(3aii)
DISEASES
– Gummosis
(i) CROP AFFECTED
– citrus crops
(ii) CAUSAL ORGANISMS
– Phytophthora fungi
(iii) SYMPTOMS
– water soaked large patches on the basal portions of the stem near the ground level.
(iv) TWO CONTROL MEASURE
– Protect from Sunscald
– Drain Water from the Base of the Tree.

(3bi)
(a) Beans
(b) Lentils

(3bii)
(a) Cinnamon
(b) Ginger

(3c)
(i) Irrigation equipment is expensive to install
(ii) Inadequate water supply for irrigation in certain areas and periods
(iii) Maintenance cost is high
(iv) Inadequate technical know
(v) The high relative humidity on irrigated land favours the growth of disease-causing organisms
(vi) Salts that are toxic to crops could be introduced to the farmland through irrigation water
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(6a)
(i) scarcity of labourers leading to high labour cost and decrease in export and hence GDP (Gross Domestic Product)
(ii) high cost of labour will lead to high cost of production
(iii) decreased food and cash crop production
(iv) decreased animal production and poor adoption of agricultural innovations

(6b)
(i)boost agricultural production through the construction of farm service centres for effi-cient distribution of agricultural inputs
(ii) construction of rural infrastructures such as feeder roads and earth dams
(iii) Increased level of extension contact with farmer.
(iv) bring agricultural services closer to the people in rural areas.
(v) source and make available farm inputs to farmers (e.g. improved seeds, fertilizers, chemicals, etc.)
(vi) helps in the reclamation of degraded agricultural lands.

(6c)
(i)soybean meal
(ii)sunflower meal
(iii)cottonseed cake
(iv)groundnut cake).

(2ai)
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust.

(2aii)
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.
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(2aiii)
Metamorphic rocks are formed through the transformation of pre-existing rocks in a process known as metamorphism (meaning “change in form”). The original rock, or protolith, is subjected to heat and pressure which cause physical, chemical and mineralogical changes to the rock.

(2b)
(i)Prevailing farm conditions.
(ii)Crop or varietal adaptability.
(iii)Marketability and profitability.
(iv)Resistance to pests and diseases.
(v)Available technology.
(vi)Farming system and Security

(2c)
(i) It is possible to provide favourable growth conditions
(ii) Improved crop uniformity
(iii) Eliminates the problem of difficult soils

(2d)
(i) Lopping Shears
(ii) Hand Pruners
(iii) Pruning Saw
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(1a)
(i)To examine the need for effective agricultural development in Nigeria.
(ii)To assess the level of agricultural development in Nigeria and to recommend ways of improving agricultural development in Nigeria.
(iii)To examine the importance of agriculture to the economy of Nigeria.
(iv)To examine the impact of agricultural development on economic development in Nigeria.
(v)To examine the relationship between agricultural development and economic development in Nigeria.

(1b)
(i)Refrigeration.
(ii) Incubation.
(iii) Milking ( machines)
(iv) Drying of produce or material.
(v) Shelling of fruits/ seeds.

(1c)
(i)Maintenance cost may be high
(ii)It can cause five Lazard
(iii)It cannot be widely used in field operation
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