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What are the disadvantages of using manures and fertilizers?

What are the disadvantages of using manures and fertilizers?

Answers

Raphael
• The leaves get burnt by the fertilizers when they fall on them when meant to be applied on the soil.
• Green manure is expensive to prepare. Most of the farmers grow food crops in their farms and would not like to cut down the crops before maturity so that they can plough them into the soil.
• Green and compost manures take time to decompose thus a delay in planting.
• Bacteria decomposing the materials when preparing manure use the nutrients from the decaying materials and they release these nutrients when they die.
• Crops grown for green manures use most of the water in the soil and leave little for the plants to be planted.
• If the plants do not use them immediately, inorganic manures will pollute the environment.
• If applied in large quantities, some of manures and fertilizers burn (scorch) plants.
• Some fertilizers absorb water in the atmosphere if exposed and stick together.
• Some fertilizers are corrosive and so can affect the hands of users if handled with bare hands.
• Some fertilizers evaporate and escape into the atmosphere when exposed to the sunlight.
raphael answered the question on October 9, 2018 at 04:59

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