Prevention and control methods of leaf spot disease of Crinum serrata

Prevention and control methods of leaf spot disease of Crinum serrata

Symptoms

Leaf spot disease often occurs on the tip or edge of the leaf, and is semicircular or elliptical in shape, mostly in yellow, brown, and gray. Yellow halos are often seen on the spots, which appear larger, up to 1 cm in diameter, and small black spots will appear on the spots.

Pathogen, characteristics of disease

Its pathogens are various fungi, molds, and fungi that overwinter on dead and diseased leaves, and are spread by wind and rain, entering through the wounds and causing the Crinum to become sick. The disease usually occurs in humid and warm conditions.

Prevention and treatment methods

1. Pay attention to the centralized treatment and destruction of diseased and damaged leaves.

2. In the early stage of the disease of Crinum juncea, spray 800 times diluted Benomyl, or use 500 times diluted 25% Carbon Thaler, or 800 times diluted 65% Dictamni, etc. Maintain a cycle of two weeks and spray continuously without stopping.

The editor has explained the pest control methods of Crinum orchid. If you have any questions, please feel free to consult the forum. The editor will sort out detailed solutions for you to make your Crinum orchid bloom more beautifully.