Disease and pest control of national orchid in March

After the plant is divided and replaced, it must adapt to the new environment slowly. During this period, many nutrients will be consumed, resulting in plant weakness. In addition, the temperature rises in March, and the pests and harmful microorganisms of piercing mouthparts will affect the development of new buds.

1. Thrips, scale insects and other pests can be used 5% Baishule water base 1000 times or 48.34% butyl plus water base emulsion 1500 times, every 5 to 7 days, 3 to 4 times in a row.

2. The root system of orchid plant is not easy to adapt to a new environment when it just grows, and root rot is easy to occur. Every 10 days, 500 times 75% Bacidac WP can be used for irrigation for 4 consecutive times.

3. If water-soaked spots are found on the leaves, 70% Meiyouren WP 50O can be sprayed on the leaves every 7 to 10 days for 4 consecutive times to inhibit the harm of germs.

4. Rotting phenomenon is found in bud germination stage, which may have been infected with blight or soft rot. At this time, 58% zinc manganese methomyl WP 400 times or polybamycin 1500 times can be used once every 7 to 10 days for 4 consecutive times to control it.

February and March is a critical period for high yield of Chinese orchids. Cultivation managers must start with medium selection, plant division, water management, light control, fertilizer application, pest control, etc. Every detail will affect bud germination and growth. I hope the above management points can help Chinese orchids grow well. (Wang Huaiyin)