Higher Study | Agriculture Officer | Manures and Fertilizers

Select the incorrect statement

ক

Lean mixes bleed more as compared to rich ones

খ

Bleeding can be minimized by adding pozzuolana finer aggregate

গ

Bleeding can be increased by addition of calcium chloride

ঘ

None of the above

Choose the incorrect pair from the following.

ক

Vermicompost → earthworms

খ

Farm compost → farm waste

গ

Farmyard manure → Cattle dung, urine and litter

ঘ

Green manures → Chemical compound

The manure also considered as bio-fertilizer is:

ক

Farm yard manure

খ

Compost

গ

Green manure

ঘ

Blue green algae

Nitrogenous fertilizer is required

ক

during the early stage of growth to promote the development of stem and leaves

খ

for accelerating fruit formation in later stage of growth

গ

to lessen the effect of excessive potash application

ঘ

none of these

An incomplete complex fertilizer is one that

ক

supply only one of the primary fertilizer elements

খ

supply only two of the primary fertilizer elements

গ

supply all three of the primary fertilizer elements

ঘ

supply more than three primary fertilizer elements

Organic fertilizers can be derived from:

ক

animal materials only

খ

plant materials only

গ

carbon materials

ঘ

animal and plant materials

Most outstanding green manure crop is

ক

Sunn-hemp

খ

Cassia

গ

Gliricidia

ঘ

Dhaincha

Vermi-composting is a process of

ক

Degradation of organic wastes by bacteria

খ

Degradation of organic wastes by earthworms

গ

Degradation of organic wastes by actinomycetes

ঘ

Degradation of organic wastes by algae.

Bulky organic manures include

ক

FYM

খ

Compost

গ

Sewage sludge

ঘ

All are correct

Composted manure is formed from

ক

Animal refuse and rotten vegetables

খ

Farm and household refuse

গ

Organic wastes from where biogas extraction takes place

ঘ

Green and farmyard manure

For rice the best fertilizer is

ক

Bacillus polymyxa

খ

Bacillus megaterium

গ

Rhizobium meliloti

ঘ

Azolla pinnata

Application of fertilizer during irrigation is known as

ক

Emasculation

খ

Sprinkler

গ

Fertigation

ঘ

Bioleaching

For oilseed crops, generally recommended NPK dose is

ক

1:2:2

খ

1:2:1

গ

4:2:1

ঘ

3:2:1

Chemical most commonly used for flower induction in mango plant is

ক

Calcium carbide

খ

Paclobutrazol

গ

Ethylene

ঘ

Both 1 and 2

Most important nutrient for oil production is:

ক

Nitrogen

খ

Sulphur

গ

Chlorine

ঘ

Oxygen

ঙ

Molybdenum