Anthrax and its control

Symptoms: too dense planting, poor ventilation, moisture imbalance or wound pathogens are easy to invade. At the initial stage of the disease, the leaves produce brown sunken spots, then expand into round irregular spots, and in severe cases, there is gangrene in the center of the spots. The disease is most obvious in Cartland (Cardelia) and Phalaenopsis. Cymbidium (Cymbidium, East Aram) suffers from this disease, and its leaves form brown gangrenous spots. The leaves of Dendrobium candidum have obvious halo ring.

Prevention and control methods:

1. Planting should not be too dense, lighting, drainage and ventilation should be good.

two。 Develop strong plants without sunburn, cold injury, drug damage and fertilizer damage.

3. The affected part was removed and 500 times of mancozeb or 500-600 times of carbendan was sprayed every 2 weeks as a normal prevention.

4. During the treatment, 50% carbendazim wettable powder or 3000 times prochloraz can be sprayed once a week.

Xue Congxian