Common diseases of nasturtium: mosaic diseaseSymptoms: The infected leaves show yellow-green and dark green mosaic symptoms, the leaves become smaller, and the whole plant looks a little shriveled. Pathogen: The pathogen of mosaic disease may be a cucumber mosaic virus. Prevention and control methods: Remove diseased leaves manually and burn them in time to prevent reinfection by bacteria. Common diseases of nasturtium: ring spotSymptoms: Ring-shaped mosaic or necrotic spots form on the diseased leaves. Pathogen: Bean wilt virus, belongs to the genus Bean wilt virus, also known as nasturtium ringspot virus. RNA virus, virion is spherical, with a diameter of 26nm. There is a type of aphid that is a vector of ring spot disease, such as peach aphid and bean aphid. However, the aphid vector nature is not persistent. Prevention and control methods: prevent aphids in time. Commonly used insecticides include 1000 times diluted 50% malathion emulsifiable concentrate, 1000-1500 times diluted 40% malathion emulsifiable concentrate, 2000-3000 times diluted complex emulsifiable concentrate (40% DDT, 10% oxydemeton-methyl), or 3000 times diluted 20% methoate emulsifiable concentrate. |
<<: Gladiolus diseases and prevention methods
>>: Diseases and prevention methods of Gloxinia
Clivia flowering time Clivia generally blooms fro...
Suitable soil requirements for growing flowers So...
How does the dancing grass dance? There are a lar...
1. Suitable substrate Choosing a suitable substra...
Watering apple blossoms It is best not to water a...
1. When to prune the fortune tree The fortune tre...
1. How many years can you live? Generally speakin...
Winter flowering method 1 Choose larger bulbs and...
1. Increase lighting Avocado itself is a light-lo...
Appearance Difference The first thing to distingu...
Chlorophytum growing conditions Chlorophytum like...
Reed growing conditions Reeds prefer a moist envi...
When to plant pear melon Pear melon is actually c...
Benefits of Silk Flower Pruning Pruning of silk f...
The process of germination Succulents usually ger...