what are the different methods by which nutrients are replenished in soil ? Explain each in brief
Answers
Explanation:
Nutrients in the soil can be replenished by these methods.
Organic materials such as compost and other decaying matter add structure to the soil, improves drainage and also it helps to keep away the diseases and pests from the plants. Compost is the best and the most effective way to replenish the nutrients in the soil. The decomposition that initiates the process of creating composts with the help of many insects and microorganism. It reintroduces the living organisms that can range from centipedes, who are also known as the farmer's best friends as they help make the soil lose, bacteria that help in fixing the nitrogen in the environment and provide healthy environment to the plant roots. The household wastes can be used for the plants and that would also eliminate the dependency on chemical fertilizers.
2) Crop Rotation is the technique that is used to plant the seasoned plants according their season on the same soil. When this technique is applied, it can further help in decreasing soil depletion and help ensuring a lasting healthy soil environment. Crop rotation also helps increase the yield and prevents crop loss due to pests or diseases.
Cover crops are planted next to food crops in the middle of their growing season that help counter the weeds and attract the beneficial insects. These crops grow fast to compete the weeds for which it is important to cut down and kill the weeds.
- Fertilizers and manures contain plant nutrients such as nitrogen, phosphorus, potassium.
- Some bacteria such as Rhizobium converts nitrogen from the air into useful components such as ammonia
- Fertilisers are helpful but the insecticides and pesticides harms the soil rather helping it