What are the advantages of crop rotation?
- When the same crop is cropped several times at the same place, it leads to depletion of specific nutrients in the soil. Each type of crop will have a different nutrient interaction with the soil. Each crop releases and absorb different types of nutrients. Keeping this in mind, farmers follow crop rotation to increase the soil fertility. Fertility of soil can be increased by controlling the excess nutrients or the nutrients which are deficient ones. By crop rotation, the nutrients which are not available in the soil are replenished and the abundant nutrients are absorbed.
- It also improves the soil organic matter which is caused by the microorganisms left behind by each crop planted. Grazing of animals also contributes to the increase in the manure to the ground, which in turn fertilizes the soil. At the time of harvesting, there would be biomass, which are left behind. This biomass, being a purely green manure, will also play a major role in improving the fertility of the soil.
- By following the practice of Crop rotation, the farmers can increase the harvest. The farmers can get a bounty harvest as there would be the incorporation of different types of crops. Hence the nutrients which are available in the soil nourish the plants which help the farmers in successful yielding. It is always advisable for farmers to follow crop rotation whenever the land becomes still and stops giving enough production because crop rotation has been proved successful in improving the fertility of land on continuous practice.
- As crop rotation is an agricultural practice which allows the land on the farm to regenerate and rejuvenate the nutrients in its soil without the use of applying any more nutrients by using fertilizers or pesticides. If the farmers leave the land barely for a season, then the land will regenerate the nutrients in the soil, which are lost due to the plants absorbing the nutrients which are planted in the previous season.
- As we all know, Soil erosion carries away the top fertile soil through wind or water. So to avoid this, the top layer of the soil should always be covered with plants so that it won’t be carried away due to heavy rainfall. The farmers can go for crawling plants or crops which work well for preventing soil erosion. Crop rotation will also be helpful in minimizing the impact of a raindrop on the soil and also the general erosion which is caused by water. Even trees can be planted along with the crops to prevent soil erosion.
- The plants which are similar will have the same pathogens too. Hence, the crop rotation will interrupt the lifecycle or habitat of the pests. If the farmer is aware of the type of pests and diseases that break out at the specific time of the year and their effects on the crop, then he can plant it at a different season when there are low chances of infestation. This reduces the risk of infestation of plants and allows the farmers to grow crops without using any kind of pesticides which is healthy for both human beings and plants.
- Crop rotation is also a technique for reduction of weeds because it indulges in the maintenance of the field to check if the weeds are growing in large number. Weeds are a kind of disturbance to any farmer and these can be controlled through tillage, which can also be called as mowing. Through crop rotation, a farmer can control the population of weed better than any other method. By using crop rotation, in the long run, there would not even be a chance to use tillage, which is a harmful weed reduction technique followed as it causes disturbances to structure if the soil.
- As the farmers use a lot of fertilizers and pesticides, there would be a chance of soil leaching in which there would be excess build up of nutrients which leads to a toxic environment. This toxic or harmful environment does not allow the plants to grow in a healthy way. Thus, by using crop rotation, the nutrients in the soil, increase without any use of fertilizers.