What are the uses of chemical fertilizers ?

How can microorganisms be used to decrease the use of chemical fertilizers and pests ?

Why should we discourage the use of chemical fertilizers?

What are the effects of use of fertilizers and pesticides for long period on soil fertility ? What are the causes of soil erosion ?

Do you think it is better to use compost instead of chemical fertilizers ?Why ?

True or False Organic farming involves the replacement of chemical fertilizers and pesticides by biofertilizers and bio-pesticides.

What are biofertilizers ? Why are biofertilizers preferred to chemical fertilizers ?

Why are biofertilizers or biopesticides prefered to chemical fertilizers or pesticides?

Compare the use of manure and fertilizers in maintaining soil fertility.