FREE 2015 NECO THOERY AND OBJ AGRICULTURAL SCIENCE

100% REAL AGRIC SCIENCE ANSWERS NECO

2015

Agric type A

1-10: BDCABEDBBB

11-20: B - CBAADDBA

21-30: DAAEDBBDBC

31-40: CADCADCDED

41-50: BCDDCDEABA

51-60: EA - DDBEACC

1a)

- they assist in rural development by

providing social amenities

- they carry out research to improve new crop

varieties

- they fund research for better farming

method and also

develop farm implement

- 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 is the measurement of

land made on

farm,such measurement by tables, plans and

done for specific

purpose.

1e)

- it ensure the passage of grains and chaff

through diff nozzles

- it cleans the grain by separating them from

chaff

4a)

* AMMONIFICATION: the process involving

the formation of

ammonium compound from dead and

decaying plants&animals

and their waste product of life urine and

faeces

* NUTRIFICATION: Is the process that involve

conversation of

ammonium compound first nitrite by nitrifying

bacteria called

nitrosomonas, the nitrite are converted by

oxidation of nitrates

by another bacterium called nitrobacter

4b)

* topography

* population growth

4c)

[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

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