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VERIFIED NECO JUNE/JULY 2015 

EXAM DAY: FRIDAY 

SUBJECT: AGRIC

VERIFIED AGRIC

Agric type A

1-10: BDCABEDBBB

11-20: BCCBAADDBA

21-30: DAAEDBBDBC

31-40: CADCADCDED

41-50: BCDDCDEABA

51-60: EAADDBEACC

1a)

 i They provide funds for agricultural extension projects
       ii They improves farmers awareness, funding research
       iii They enjoy government support and assist and assist in producing crops,high quality planting materials and good animal breeding

– they helps to control weeds,pests&diseases

organism by providing necessary chemical

1b)

– IMPLEMENT&MACHINERY: science and

technology has aided the development of

implements&machinery which have replaced the

olds tools

– PROVISIONS OF STORAGE FACILITIES: they help

to develop storage facilities for preservation of

harvested product.

– DEVELOPMENT OF FARM MANAGEMENT

SYSTEM: this also develop the farm system with

the aid of science and technology

– ANIMAL NUTRITION: this developed feeds, new

formulated to meet the nutrition demand of

animal

1c)

* Replacing of trees

* Crop rotation

* Bush fallowing

* Cover cropping

(1d)
 Farm surveying : This is the process of mapping out the position, height, size and boundary of an area of farm land..

1e)

 i It helps in harvesting and threshing of grain crops.
       ii It also helps to separate grains from chaff

———————————

4a)
 i Ammonification- This is the process by which organic acid are converted into ammonium compounds which can not be absorbed by the plants. It is carried out by ammonifying organisms.
      ii Nitrification - This stage is divided into two .
 The first one is the process by which the ammonium compounds are converted into nitrite (NO2). It is carried out by Nitrosomonas.
 The second stage is the conversion of nitrite to Nitrate (NO3) which is carried out by Nitrobacter

4b)

* topography

* population growth

4c)

TABULATE THIS

[ORGANIC MANURE]

* it refers to decayed plant&animal product

* it conserve moisture&prevent evaporation from

soil

[INORGANIC MANURE]

* it refers to non decayed plant&animal

* it does not conserve moisture

4d)

– it does not support leaching hence, contain

plant nutrition

– the particles are sticky&mouldy when wet

– percolation in clay soil is low but capilarity is

high

– it support water – logging&erosion

4e)

[INTRUSIVE IGNEOUS ROCK]

* are formed when motion magma cool&solidifies

slowly before it get the surface of the earth to

form large crystal

* Examples are: granites

[EXTRUSIVE IGNEOUS ROCK]

* are formed when molten magma cool&solidifies

rapidly on getting to the surface of the earth to

form small crystal

* Examples are : basalt

4f)

* sprinkler irrigation

* drip irrigation

——————————

5ai)

 Pasture is a piece of land or field covered with forage crops usually grasses and legumes and used for grazing.

5aii)

 The process of establishing stalls for livestock on a farm. Paddocks are designed to ensure short-duration grazing followed by an appropriate rest period for re-growth and stand maintenance.

5d i )

 Tropical kudzu - Pueraria phaseoloides

     ii) Elephant Grass - Pennisetum purpureum

     iii) Goat weed - Ageratum conyzoides

6a) This involves the importation of introduction

or some varieties of crop with desirable

characteristics into area where they are not

existed before.

6b)

* it lead to loos of organic matter

* it may lead to desert enchroachment as sand

particle are more likely to drop in area without

trees

* it destroy micro-climate&warm up the

environment

* it reduce the amount of rainfall in the area.

6c)

* Remove and burn infected plant

* practice crop rotation

* plant diseases – resistant varieties of crop

* spray plant protection chemical such as

fungicide&nematicide

6d)

– LAND PREPARATION: this is done manually

using cutlass&hoe to make ridges or mechanically

by ploughing.

– CLIMATIC REQUIREMENT: it required a

temperature of over 20 degree C, 75cm to 120cm

of rainfall for upland rice and over 250cm for

swamp

– CULTURAL PRACTISE:

(i)Weeding :- it is done to ensure rapid growth of

rice

(ii)Fertilizer application: apply 150kg or 3 bag of

N.P.K fertilizer per hectare at planting by

broadcasting.

– ONE MAJOR DISEASES: Rice smut

– ONE MAJOR PEST: Rice weevils

—————————

3b)

i. Soil Ph: The relative concentration ofthe hydrogen irons and or hydroxyl irons may either increase or decrease nutrient availability.

ii. Leaching: This encourages the draining of mineral salts from the topsoil to subsoil thereby depriving plants of such nutrients.

iii. Crop Removal: This may be in form of clean clearing, deforestation or cutting down of harvested crops which lead to loss of nutrients in the soil.

iv. Burning: This kills soil organisms, destroys the texture and structure of the soil and finally reduces plant nutrients.

v. Erosion: This helps in washing away of soil nutrients from one place to another, and may occur under the influence of heavy rain or wind storm.

3c)

Evaporation: is water loss from the soil or from water spray equipment.It occurs on hot, sunny and windy days. You can reduce water loss fromevaporation by using a coarse, low-pressure spray and by wateringduring cool and quiet evenings or early in the mornings.

Transpiration : is water loss from leaf tissue. You can reduce it byallowing plants to wilt in the afternoon sun. This won’t harm the plantsif wilting occurs only for an hour or two.Percolation: is the downward movement of water through the soil. Itoccurs with overwatering. With percolation, nitrate fertilizer is carriedinto ground water supplies causing pollution.

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