Fertilizer Types, Uses and Application Methods

Question 1

What is a fertilizer?

Accepted Answer

Any natural or synthetic substance containing chemical elements added to soil or plants to supply essential nutrients

Question 2

Why must fertilizers be applied in continuous crop cultivation?

Accepted Answer

To replenish lost nutrients absorbed by previous crops

Question 3

What are the two main groups of fertilizers based on their origin and composition?

Accepted Answer

Organic and inorganic fertilizers

Question 4

Which of the following is a key benefit of organic fertilizers besides supplying nutrients?

Accepted Answer

They improve soil structure and increase water-holding capacity

Question 5

What does farmyard manure consist of?

Accepted Answer

Animal wastes mixed with bedding materials like straw or wood shavings

Question 6

What is green manure?

Accepted Answer

Ploughing fast-growing leguminous crops back into the soil while green and succulent

Question 7

Which characteristic is typical of inorganic fertilizers?

Accepted Answer

They contain concentrated, readily soluble nutrients easily absorbed by plants

Question 8

What is a straight fertilizer?

Accepted Answer

An inorganic fertilizer containing only one primary plant nutrient

Question 9

Which of the following is an example of a straight fertilizer?

Accepted Answer

Urea

Question 10

What is a compound or mixed fertilizer?

Accepted Answer

A fertilizer containing two or more primary plant nutrients chemically combined or physically mixed

Question 11

Look at the image below. What physical difference is shown between the two fertilizer types?

Accepted Answer

Dark organic compost on the left and uniform inorganic chemical granules on the right

Question 12

Which nutrient is primarily responsible for promoting rapid vegetative growth and healthy green leaves?

Accepted Answer

Nitrogen

Question 13

Which type of fertilizer is specifically used to promote strong root growth and development?

Accepted Answer

Phosphatic fertilizers

Question 14

Which nutrients are primarily responsible for accelerating crop maturity, flowering, and uniform ripening?

Accepted Answer

Potassium and Phosphorus

Question 15

Which fertilizer application method involves distributing fertilizer evenly over the entire soil surface?

Accepted Answer

The Broadcasting Method

Question 16

Which application method is best suited for widely spaced crops like fruit trees and oil palm to deliver nutrients directly to the root zone?

Accepted Answer

The Ring Method

Question 17

What is the key feature of the side placement method of fertilizer application?

Accepted Answer

Placing fertilizer in a continuous band or pockets along one or both sides of a crop row

Question 18

Which method involves placing fertilizer in narrow bands slightly below and to the side of the seed at the time of planting?

Accepted Answer

The Band Placement Method

Question 19

Why is the incorporation method highly recommended for organic manures and volatile fertilizers like Urea?

Accepted Answer

It places nutrients in the root zone and reduces nutrient loss to the atmosphere

Question 20

Why should inorganic fertilizers not touch plant foliage or stems directly during application?

Accepted Answer

It will cause chemical burns (fertilizer burn) on the plant tissues

Strong work.