Its has been voiced out for a long while now against the use of synthetic or chemical fertilizers because on the long run it damages the soil, affect the soil PH and human health. However, the population is constantly growing especially in Nigeria and one thing that is synonymous to that population growth is food.
So how do we grow crops with limited or no use of synthetic fertilizers?
1) cultivating legumes: legumes are very special crops like beans, soybeans, groundnut etc. The have the ability to increase soil fertility by fixing nitrogen biologically (nitrogen carries high proportion in synthetic fertilizers) with the help of their roots. You can also inter crop legumes with any crop you are producing. This will reduce your fertiliser usage.
2) vermicompost: this is the production of organic manure from earthworms. A soil that has many earthworms is a rich soil. This is also a business too. You can rear earthworms to produce vermicompost and sell out as organic fertiliser as well as using it on your farm.
Other ways of reducing chemical fertilizers on your farm includes
3) Allowing soft plant parts to decay on your field.
4) practice crop rotation.
5) applying animal dungs
This will benefit you economically and health wise.
Organic fertilizers are more affordable, reachable and most suitable for plantation unlike the synthetic fertilizers. It has been advised by scientists that farmers should start using organic manure for farm produce.
A lot of people do not know that Organic fertilizer is far more important and better and way cheaper than the other. Also it is very accessible to get. And I feel we can improve more in research to get better ways to improve the nutrients in these organic fertilizers
Organic fertilizers enriches the soil and aids plant growth
Agriculture in Nigeria is beneficial but not all can afford mechanised farming. Most farmers only go into subsistence farming and don't make use of fertilizers.
I think the best way to propel the practice and use of organic fertilizer is to reactivate farmers incentive scheme where organic fertilizer will be distributed to the farmers who already have a farm and educate them on the benefits of organic fertilizer.