Question

advantage and disadvantage of using chemical fertillizer and manures

Answer 1

Manure advantages

It increases the water holding capacity.
It gives all required nutrients
It is microbe friendly

Manure disadvantages

Plant growth becomes slow


Fertilizer advantages

Plant growth becomes faster
It contains nitrogen, pottashiam, phosphorus, urea etc.


Fertilizer disadvantages

It is not microbe friendly.
Excessive use can make improper growth.
They are made chemically so they sometimes make the crop bad in nature.

Answer 2

Farm

Advantages and disadvantages
Advantages of applying fertilisers to the land:
It increases crop yield and improves poor quality land.
Manure improves soil texture, recycles nitrogen and introduces essential bacteria.
Pasture is improved so animals fatten up quicker.
Once marshland is drained, fertilisers can help reclaim that land for pasture
Crops grow faster – particularly when hybrid seeds are used.
Disadvantages of using artificial fertilisers:
Crops grow better, but so do weeds. Therefore herbicide sprays are required too.
Better quality plants attract insects so pesticides may be needed.
Excess nitrogen from fertilisers gets into water supplies, causing fish to die.
Chemicals need to be used safely. In poorer countries in particular, farmers can
damage their health by applying fertilisers, pesticides and herbicides incorrectly.
Artificial fertilisers, applied without organic additions, do not improve soil structu

Advantages :

•In addition to releasing nutrients, it improves soil structure

•Increases water holding capacity

•Slow in action hence very difficult to over fertilize plants

•No risk of forming toxic build up of chemicals

•Renewable, biodegradable, eco friendly

Disadvantages:

•Slow in action, microbes required to release nutrients microbes require moisture, so seasonal variation may affect

•Nutrient ratios are unknown