Jasmines Root and Stem Canker Disease Control Methods
Here is an explanation about roses, specifically regarding the control methods for jasmines root and stem canker disease, with the details as follows:
Chinese Name: Jasmine Root and Stem Canker Disease
Latin Name: Cylindrocladium scoparium Morg
Affected Crop: Jasmine
Symptoms of Damage: The disease affects the root collar near the ground surface of the plant or cutting. Initially, the infected stem cortex becomes slightly discolored and then develops into irregular black lesions with unclear edges. If it is a grafted seedling, it often appears watery at the junction of the rootstock and scion, sometimes extending up to 5-10cm or more above the soil surface, eventually causing root rot and, in severe cases, the drying of the cutting or entire plant.
Morphological Characteristics of the Pathogen:
Taxonomic Attribute: Deuteromycetes Fungus
Disease Development Characteristics: The pathogen survives in the diseased parts and soil over winter, spreads through watering or irrigation, and invades jasmines, roses, and蔷薇 when conditions are favorable. The fungus can tolerate low to high temperatures (12-30℃), and spores can germinate in high humidity; overly wet soil and potting soil can easily lead to disease, with severe occurrences in continuous cropping.
Epidemic Dynamics:
Control Methods: (1) It is recommended to sterilize the soil before planting jasmines. Use steam or heat the soil to 70-80℃, for half an hour. Soil can also be sprayed with a 40-fold solution of 43% formaldehyde, and planting or cutting can be done 15 days later. Alternatively, a 50% wettable powder of dichlobenil can be used at 800 times dilution to water the root collar. (2) Plant disease-free seedlings. (3) Prevent the conservation environment from becoming too wet.
Commonly Used Chemicals: Formaldehyde
This article shares a specific introduction to the control methods for jasmines root and stem canker disease, for reference and learning by netizens.