Streptocycline is a water-soluble, systemic antibacterial powder used to control a wide range of plant bacterial diseases. It contains streptomycin sulphate (90%) and tetracycline hydrochloride (10%) and is easily absorbed by plants after spraying, with resistance to being washed off by rain. 

The solution is prepared by dissolving the required amount in water and spraying evenly. It is compatible with most insecticides and fungicides and can be combined with Aureofungin for broader disease control.