Agricultural pests are called pests because they invade crops, reduce crop yields, and affect food safety. Most farmers use chemical pesticides to control pests (such as water wax insects, six-point yellow spiders). However, the use of chemical pesticides can affect people's health and pollute water sources. If abused, it may even kill the crop. So now for many farmers, finding new pest control methods has become their first choice. Recently, the Worldwatch Institute's Nourishing the Planet project introduced five natural crop management methods for pest control.
1. Crop rotation Crop rotation is to allow farmers to rotate different crops every year in the same field. This method of cultivation can effectively prevent pests from relying on certain types of specific crops, in addition to fertile land. In the same field, legumes can be planted first, through which symbiotic nitrogen fixation with rhizobium increases soil nitrogen, and then plants with higher nitrogen requirements for soil are planted. This type of planting method ensures the health of the soil for each season. The ETCF Foundation (a non-profit organization that focuses on the relationship between sustainable agriculture and social development) says that healthy soils can help fight pests (crop nutrient imbalances reduce crop resistance to pests and diseases).
Professor Navdanya, a non-profit organization that promotes organic farming in northern India, has been using crop rotation to replace the use of chemical biopesticide . The number of farmers currently teaching has exceeded 500,000. Thakur Das, a farmer living in Dehradun, who grows rice, wheat and corn, has never used chemical pesticides since crop rotation nine years ago. He said that the soil used for crop rotation is much healthier than other soils that have used chemical pesticides.
2. Intercropping Crop intercropping refers to the planting of two or more crops with similar fertility seasons on the same field. The main purpose is to attract agricultural pests away from host crops. In the same field, planting different varieties of crops is equivalent to increasing the spacing of the same crop, which makes it more difficult for pests to access their target crops.
The intercropping method developed by Kenyan farmers is called “push-pull†planting. In the crops planted, a kind of crops that drive off pests are planted first, and then a kind of crops that attract pests are used to control pests. Corn is a good example of their intercropping, and the results not only help them reduce the damage of corn borers, but also increase the yield of corn.
3. Crop diversity Increase the planting type of vegetables, plants and fruits, which can improve the ability of crops to resist pests and diseases. Farmers often rely on chemical pesticides to kill pests, but long-term use will inevitably lead to drug resistance. According to Jules Pretty, a sustainable agriculture expert, the main reason why pests and diseases are paralyzed in a single crop is that they do not have the threat of natural enemies and are rich in food. In fact, maintaining the biodiversity of crops is the most effective method for controlling pests and diseases.
Zimbabwean farmers have planted a variety of crops, such as mubovora (pumpkin) and ipwa (sweet reed), to increase crop yields.
4. Pest Control Pests On farms, predatory insects (such as ladybugs or predators) can help kill pests. The use of this method on average increased crop yields by 79% compared to previous agricultural planting systems.
Thai farmers use small wasps to help trap water wax insects (water wax insects are the main cause of the loss of billions of dollars in the Thai cassava industry). Florida farmers also use the same method to control pests (attracting wasps to produce eggs on pest larvae and preventing their reproduction).
5. Organic pesticides Natural and organic pesticides not only have no impact on human health and the environment, but also enable farmers to maximize the use of planting resources by converting agricultural products into natural pesticides .
Nepalese family gardeners use an organic liquid pesticide called zholmol on fruits and vegetables, which is made from the leaves of bitter buckwheat, garlic, livestock urine, water and other substances. Coincidentally, Indian farmers also use bitter buckwheat as a natural insecticide to control pests. Similarly, traces of bitter trees can be found in the Sahara Desert and Florence to drive the six-pointed yellow spider and sugar moth.
Pesticide price http://
Neodymium Magnet,Sintered Alnico Magnet,Sintered Alnico Permanent Magnets,Sintered Alnico Ring Magnet
Honesun Industrial Co.,Limited , http://www.chinamagnetise.com