I. Technical Contents and Features:
Starting from protecting the wounds of seedlings, prevent the infection of germs. Moreover, this biological microbial agent has strong competitiveness in the soil, giving priority to colonization around the wound, producing bacteriocin with specific inhibitory effect on root cancer bacteria, and preventing the occurrence and harm of root cancer. Compared with chemical pesticides, it has the advantages of good disease prevention effect, long duration and no pollution to the environment.
K84 microbial inoculum is produced in WY culture medium, with live bacteria content ≥ 108cfu/g, shelf life of 4-6 months at 4-20℃, seed dressing ratio of 1: 5 (w/w) when applied, and root soaking ratio of 40-50 seedlings before burying or planting is/kloc-0.
According to the characteristics of fruit tree planting, supporting technologies such as seed dressing with microbial agents to accelerate germination, root heel treatment or root soaking treatment before planting were established, which realized the immunity of fruit tree seedlings to root cancer, and provided practical ways for the prevention and treatment of root cancer in production, the rational protection and utilization of soil and variety resources, the ecological environment and the construction of pollution-free fruit bases.
Second, the scope of application:
Anti-root cancer agent III is suitable for biological control of root cancer caused by Agrobacterium tumefaciens in stone fruit trees (peach, plum, cherry, apricot, etc.). ) and other plants (stone fruit trees, poplars, roses, etc. ), the effect is over 95%. Anti-root cancer microbial agent ⅱ is suitable for biological control of grape root cancer, and the control effect is over 75%.
Third, the method of use
It is mainly to protect seeds and wounds before seeds or seedlings come into contact with soil (before carrying germs), and the sooner they are used in production, the better. The treatment time is not limited, and microbial agents can be attached to the surface of plants. This product is a biological preparation, containing live bacteria, colonized on seedlings, with long validity, no toxicity and no drug resistance.
1, seed treatment before sowing: add 1-2 times of water to the microbial inoculum, and then mix (soak) the seeds evenly, or directly cover the seeds with the microbial inoculum to accelerate germination.
2. Dip the roots before transplanting: add 1-2 times of water to the microbial inoculum, and then dip the roots evenly. Plants with nodules must first remove nodules and diseased tissues.
3. Apply the wound after removing the tumor: If the tumor is found in the planted plants, remove the tumor and diseased tissue first, and then apply microbial agents to protect the wound.
Fourth, matters needing attention
1, sun protection;
2. Cover the soil immediately after seed dressing or root soaking to prevent dryness;
3. Avoid contact with strong acid and alkali.
Control methods: (1) It is advisable to choose loose and well-drained slightly acidic sandy loam to build gardens, and avoid planting in old orchards with continuous cropping, especially in old cherry orchard and Taoyuan; (2) When introducing, select seedlings without tumor at the root to minimize mechanical damage; (3) Dip the roots of the saplings that may have nodule disease with 30 times of Gennarin solution or 2-4 times of anti-nodule agent solution before planting; (4) Dig out and burn the diseased plants in time to prevent their spread.