The history of humanity’s plough and sow activities can be traced back to thousands of years ago. At the commence of original plough and sow activities, framers have to look for fecund soil to grow crops to maintain the yield of crops. Contemporarily the population grows rapidly all over the world, which causes the issue of providing enough food based on the fertility of the soil. In order to overcome the issue, chemical fertilizers had invented in the 19th century. Even though chemical fertilizers contribute a lot to solving the problems of starvation, everybody has to pay attention to the negative effects chemical fertilizers, and people should use environment-friendly fertilizers to enhance the yield of crops to ensure the products are beneficial to the humanity. In other words, the crops that are cultivated by the organic fertilizers should be valued.
Chemical fertilizer is one of the greatest invention in the Nineteenth century. The inventor Liebig states a situation that is called “Law of the Minimum,” which states that the plant will poorly grow when a necessary mineral element is not efficiently exist in soil no matter how sufficient the other mineral elements are. Also, he propounded that phosphate, lime, magnesia and potash are important substance to the plants. Chemical fertilizer not only improves the yield of the crops is not the only contribution of chemical fertilizer, but also makes great development of chemical fertilizer industry creates a lot of occupation opportunities to the employees. Even though chemical fertilizer creates many benefits to the humanity, its benefits are trivial when compared with the impacts is causes. The main impacts a...
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Lugon-Moulin, N.; Ryan, L.; Donini, P.; Rossi, L. Cadmium content of phosphat fertilizers used for tobacco production. Agronomy for Sustainable Development, Springer Verlag, 2006.
Staff, R. Everything You Need To Know About Organic Fertilizer Nourish your garden naturally without petrochemicals. Rodale’s OrganicLife 13 April 2015 Retrieved from
Wilson, Duff Fear in The Fields -- How Hazardous Wastes Become Fertilizer -- Spreading Heavy Metals On Farmland Is Perfectly Legal, But Little Research Has Been Done to Find Out Whether It 's Safe. The Seattle Times. 3 July 1997. Retrieved from http://community.seattletimes.nwsource.com/archive/?date=19970703&slug=2547772
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