Question

how chemical fertiliser are harmful for land

Answer 1

Chemical fertilizers are primarily made from nonrenewable sources, including fossil fuels.

They grow plants but do nothing to sustain the soil. The fillers do not promote life or soil health, and even packages labeled “complete” do not include the decaying matter necessary to improve soil structure. In fact, chemical fertilizers don’t replace many trace elements that are gradually depleted by repeated crop plantings, resulting in long-term damage to the soil.

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Because the nutrients are readily available, there is a danger of over fertilization. This not only can kill plants but upset the entire ecosystem.

Chemical fertilizers tend to leach, or filter away from the plants, requiring additional applications.

Repeated applications may result in a toxic buildup of chemicals such as arsenic, cadmium, and uranium in the soil. These toxic chemicals can eventually make their way into your fruits and vegetables.

Long-term use of chemical fertilizer can change the soil pH, upset beneficial microbial ecosystems, increase pests, and even contribute to the release of greenhouse gases.

Answer 2

Negative Effects of Chemical Fertilizers. ... Nitorgen fertilizersbreak down into nitrates and travel easily through the soil. Because it is water-soluble and can remain in groundwater for decades, the addition of more nitrogen over the years has an accumulative effect.

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