Methods of using agricultural streptomycin, tetracycline and oxytetracycline

Agricultural streptomycin, tetracycline and oxytetracycline are all white amorphous powders, readily soluble in water and insoluble in most organic solvents, with low toxicity to humans and livestock. The main formulations include: 0.1%-8.5% powders, 15%-20% wettable powders and mixed formulations, etc. Agricultural streptomycin, tetracycline and oxytetracycline have the advantages of low application concentration, strong selectivity, and easy penetration and translocation into plant tissues when used to control flower and tree diseases; they can controlorchidscorm rot and many other bacterial diseases. The commonly used application methods include spraying and injection, with application concentrations of 100-10000 units. Against witches' broom disease caused by mycoplasma-like organisms, especiallyorchidwitches' broom disease, they have a relatively good control effect. (Liu Zhongjian)