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What diseases and insect pests do Canna have and how to control them

Walter White
2020-06-28 13:01:36
Mosaic is the main infection disease of Canna. The whole leaf is curly and yellow, and there are broken color stripes on the petals. The healthy rootstock without disease should be selected during propagation. The prevention should be paid attention to during the whole growth period. If the disease plant is found, it should be pulled out and destroyed immediately. Banana bracts are the main pests. When they are found, they should be removed in time. In serious cases, they can be sprayed with trichlorfon 1000 times solution. The spraying time should be in the morning or in the evening.

I. mosaic

Symptoms: when infected with this virus, the leaves will follow the vein to the edge of the leaves, and the green color will be reduced a lot, with intermittent yellow stripes, and then it will expand to most parts. The whole leaves will appear curly and yellow, and when flowering, there will be broken color stripes on the petals.

Prevention and control: when propagating, it is necessary to select healthy roots and stems without disease. During the whole growth period, it is necessary to pay attention to prevention and timely ventilation treatment. If any diseased plant is found, it should be pulled out and destroyed immediately to avoid impact on healthy leaves.

Canna

2. Banana bracts

Symptoms: This is one of the main pests. Adults will lay their eggs in the leaves, young stems, petioles, etc. when the larvae hatch, they will bite the leaves at the edge of the guide leaves, and they will spin silk to stick the leaves into curled bracts. In the later stage, when it is serious, there will be many incomplete leaves on the plants, which will not only affect the growth, but also have a great impact on the ornamental.

Prevention and control: when it is found, it is necessary to take off the bracts in time, and then kill the larvae. If the situation is serious, you can spray with trichlorfon 1000 times solution, or you can choose to suppress Taibao 1000 times solution, spraying time in the morning or evening.

Canna

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