How to prevent and treat tulip blight? A detailed guide to practical methods
Tulip blight first infects the leaves in the early stages of the disease, with small brown lesions, then infects the petals, and in severe cases also infects the underground bulbs, causing the bulbs to turn yellow and dry up, leading to the death of the whole plant. In diseased plants whose bulbs are not infected, the lesions on the leaves and flower stems also continue to expand, causing the leaves and flower stems to rot and wither.
In a humid environment, the lesions can produce large numbers of conidia that spread by wind, and the disease spreads very quickly. During the summer dormant period after leaf drop and in the severe cold of winter, the pathogen survives dormancy as small dark brown sclerotia attached to the bulbs.
To prevent the disease, before planting the bulbs can be soaked in a 1000-fold dilution of 50% carbendazim for 30 minutes, then taken out. During care, light and ventilation should be increased, air humidity kept relatively low, watering reduced, and nitrogen fertilizer applied sparingly. After the disease appears, a 500-1000 fold dilution of 50% wettable thiram can be sprayed. Spray once every 3-5 days, for a total of 3-4 sprays, with marked results.
How to prevent and treat tulip blight
In the early stages of the disease it first attacks the leaves, with relatively fine brown lesions, then infects the petals, and in severe cases infects the underground bulbs, causing the bulbs to dry up. Although plants whose bulbs are not infected will not die, the lesions on the leaves and flower stems will continue to expand and cause withering.
In a humid environment, the lesions can produce large numbers of conidia that spread by wind, and the disease spreads very quickly. After tulips go dormant and drop their leaves in summer, the sclerotia attach to the bulbs to pass the summer.
To prevent the disease, before planting soak the bulbs in a 1000-fold dilution of 50% carbendazim for 30 minutes to disinfect them, then plant them in a sunny, well-ventilated spot; water less and apply less nitrogen fertilizer to strengthen the plants' resistance. After the disease appears, a 500-1000 fold dilution of 50% wettable thiram can be sprayed, once every 4 days, for a total of 3 sprays to bring the disease under control.
How to prevent and treat tulip blight?
It first develops on the leaves, with relatively fine brown lesions, and at the same time infects the petals; in severe cases it also infects the underground bulbs, causing the bulbs to turn yellow and wither, and further causing the death of the whole plant. In diseased plants whose bulbs are not infected, the lesions on the leaves and flower stems also continue to expand, causing the leaves and stems to rot completely and wither.In a humid environment, the lesions can produce large numbers of conidia that spread through the air, spreading very quickly. During the summer dormant stage after tulip leaf drop and in the severe cold of winter, dark brown small sclerotia attach to the bulbs to survive unfavorable conditions. To prevent the disease, before planting the bulbs can be soaked in a 1000-fold dilution of 50% carbendazim for 30 minutes to disinfect them. When producing winter cut flowers in a greenhouse, light and ventilation should be increased and indoor humidity kept relatively low. Water less and apply less nitrogen fertilizer. After the disease appears, a 500-1000 fold dilution of 50% wettable thiram can be sprayed, once every 3-5 days, with fairly good results.