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Where virus-infected plants and the substrate they were growing in has been removed , sterilization of floors , surfaces tools , and pruning equipment should be carried out to prevent any carry over infection . Insect prevention , screening , particularly the use of thrips screens , and insect control programs are essential where virus has been found to be transmitted from outdoors . With indoor growing areas , one common source of virus infection can be new planting stock — the early stages of virus infection are often not detectable , so any new planting material , stock plants or cuttings / clones should be carefully inspected and isolated in a quarantine area if virus is suspected . This is a good practice for all indoor hydroponic systems as viruses are the only problem which can be introduced with new planting stock .
Viruses can cause a wide range of symptoms , unusual petal color streaking can be one .
Viruses can certainly cause some considerable damage and there is potential for infection to rapidly spread in some circumstances , however , these can be largely managed by immediate removal of plants with suspicious symptoms . Control of general hygiene , sanitation , and keeping in mind that sap-to-sap infection can occur tends to prevent many virus problems from becoming widespread .
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