Nepaljam x Oaxaca
Active Member
Viruses rarely kill Cannabis. They only exist and replicatein living plants. Viruses can, however, seriously reduce yields. Once acquired,they are nearly impossible to eradicate. Viruses invade all parts of plants. Pollen and seed infections transmit viruses to subsequent generations.
The hemp streak virus (HSV) is frequently a problem for growers in Europe. Foliar symptoms beginas a pale green chlorosis. Chlorotic areas soon develop into a series of interveinal yellow streaks or chevron-stripes. Some-times brown necrotic flecks appear, each fleck surrounded by a pale green halo. Flecks appear along themargins and tips of older leaves and often coalesce. Streak symptoms predominate in moist weather, flecks appear during dry weather. Leaf margins become wrinkled and leaf tips roll upward, leaflets curl intospirals. Whole plants assume a "wavy wilt" appearance.
The hemp mozaic virus has been reported by cultivars in Europe and Pakistan. Symptoms were described as a gray leaf mosaics. Three other viruses have been cited on European cannabis—the alfalfa mozaic virus, cucumber mozaic virus, and the arabis mozaic virus. Many insects transmit these viruses as they feed from plant to plant. The worst carriers of Cannabis viruses are bhang aphids, greenhouse whiteflies, onion thrips and green peachaphids.
The hemp streak virus (HSV) is frequently a problem for growers in Europe. Foliar symptoms beginas a pale green chlorosis. Chlorotic areas soon develop into a series of interveinal yellow streaks or chevron-stripes. Some-times brown necrotic flecks appear, each fleck surrounded by a pale green halo. Flecks appear along themargins and tips of older leaves and often coalesce. Streak symptoms predominate in moist weather, flecks appear during dry weather. Leaf margins become wrinkled and leaf tips roll upward, leaflets curl intospirals. Whole plants assume a "wavy wilt" appearance.
The hemp mozaic virus has been reported by cultivars in Europe and Pakistan. Symptoms were described as a gray leaf mosaics. Three other viruses have been cited on European cannabis—the alfalfa mozaic virus, cucumber mozaic virus, and the arabis mozaic virus. Many insects transmit these viruses as they feed from plant to plant. The worst carriers of Cannabis viruses are bhang aphids, greenhouse whiteflies, onion thrips and green peachaphids.