Seaweed fertilizer is a natural organic fertilizer that contains rich nutrients needed for plant growth. After special treatment, the effective ingredients in seaweed fertilizer are easily absorbed by plants, and enter the plant body within 2 to 3 hours after application, showing a fast transmission and absorption speed, which can not only enhance crop photosynthesis, but also improve fertilizer utilization Increase crop yield, improve product quality, enhance crop resistance to cold and drought, and disease resistance, promote early maturity of crops, increase crop setting and fruit setting rate. It is friendly and harmless to humans, animals and the natural environment, and it is a new type of green fertilizer suitable for the development of modern agriculture.
The benefits of seaweed fertilizer on the control of nematodes
By changing the ratio of plant endogenous auxin to cytokinin, seaweed essence can prevent nematodes. Treating corn roots with seaweed essence can reduce the reproduction rate of nematodes by 47%~63%. Seaweed extract can strengthen the defense function of plants against pests and diseases. In addition to affecting plant physiology and metabolism, seaweed fertilizer can also promote plant health by affecting the rhizosphere microbial community.
The effect of seaweed fertilizer on pathogenic bacteria
Seaweed active substances can stimulate the crop’s own ability to resist bacteria, fungi and viruses, and reduce the use of pesticides. The following situations have been found in agricultural production.
- The application of seaweed fertilizer can improve the antiviral ability of plants against tobacco mosaic virus.
- The use of seaweed extract on cabbage inhibited the growth of the ultimate mold.
- Foliar spraying of seaweed extract reduced the infection of Phytophthora capsici.
- Seaweed fertilizer reduces rice blight.
- Seaweed fertilizer reduces the incidence of tomato gray mold disease.
- Seaweed fertilizer has obvious disease resistance effect on soft rot and downy mildew of autumn Chinese cabbage.
A large number of field trials at home and abroad have shown that various organic fertilizers have the effect of increasing production, but many short-term field trials have shown that the seasonal increase in production and production effects of organic fertilizers is far less than that of chemical fertilizers with the same nutrient content. From the long-term field test results, the effect of chemical fertilizers is inferior to that of organic fertilizers. The main effect of organic fertilizer on crop yield is the continuous supply of nutrients needed by crops. It is quite different from chemical fertilizers in improving the supply of nitrogen in the soil. Chemical fertilizers can quickly increase the soil’s alkali-hydrolyzable nitrogen content and remain relatively stable at a certain level, while organic fertilizers contribute relatively slowly to the growth of soil’s alkali-hydrolyzable nitrogen, but will increase year by year. After 5 years of organic fertilizer treatment of the soil, the content of soil alkali-hydrolyzable nitrogen exceeds that of chemical fertilizer treatment. Therefore, we must insist on using organic fertilizer, so that the utilization rate of the land can be maximized!