Tomato blight ontario1/12/2024 ![]() ![]() There are more varieties that you can try, so do your research before planting. Tammy Sons recommends some further blight resistant tomato varieties: 'Tommy Toes are heirloom red tiny tomatoes, robust in flavor and very juicy Legend variety is a red beefsteak and a favorite of most commercial growers Juliet is a small hybrid red tomato and Manyel is a yellow tomato also low in acid.' 'This blight resistant beefsteak tomato is sweeter than other beefsteak varieties.' 'With super blight resistance, this variety is ideal for growing outdoors.' This plant is high yielding, producing a mass of brightly, rich orange tomatoes.' 'This is the world’s first blight resistant orange fruited variety. Simon Crawford lists the following varieties: There are a number of varieties that have been bred with blight resistance. 'Many modern tomato varieties have made growing outdoor tomatoes easier because of earlier ripening and improved disease resistance,' says Simon Crawford. (Image credit: Future / Annaick Guitteny) Grow blight resistant tomato varieties Ensure potatoes and tomatoes are not planted in the same soil for successive years. Clear as many old potatoes as possible from a plot, ' advises Simon Crawford. 'Proper composting of plant waste is of paramount importance and ‘plant dumps’ must be eliminated in garden and allotment situations to reduce infection. We've found that history will repeat itself,' says Tammy Sons 'Tomato blight spores can stay in the ground for for 3 to 4 years. Never plant tomatoes in soil or compost that has previously contained diseased plants. Plant tomatoes in a disease free location.Tomatoes are heavy feeders and need fertilizer throughout the growing season. A balanced fertilizer such as a 10-10-10 should be fed biweekly or monthly. Try to water the soil only and keep the leaves and plants dry. What to do about it: Make sure you are feeding your tomato plants throughout the season. This is to avoid the plants sitting damp all night. This avoids leaves resting on damp soil, and also helps air circulation and speeds the ripening of tomatoes by providing them with maximum sun exposure. Remove lower leaves as the fruits develop.'Bush varieties grown in pots can be trimmed and partially supported with a bamboo cane to avoid a dense mass of foliage,' says Simon Crawford. Support bush tomato plants with a stake to keep their leaves off the soil, or tie up cordon tomatoes regularly with soft twine to improve air circulation. Likewise, pick a well ventilated spot for growing the tomatoes outside. If growing tomato plants in a greenhouse or polytunnel, avoid these becoming too humid by keeping them well ventilated. So learn how to prune tomato plants properly. 'Environmental control must focus on reducing the likelihood of leaves remaining wet for an extended period, so trimming foliage and side-shoots to maximise air movement and ensure the evaporation of surface moisture is essential,' explains Simon Crawford. The following environmental controls can help to prevent the occurrence or spread of tomato blight: Links to previous late blight posts from the 2019 season: June 20, July 10, July 20.(Image credit: Getty Images) Environmental controls for tomato blight Project collaborators: Tomecek Agronomic Services, Sporometrics, Phytodata, and Genevieve Marchand (AAFC).įunding acknowledgement: Ontario Tomato Research Institute, Fresh Vegetable Growers of Ontario, and the Ontario Agri-Food Innovation Alliance. Cheryl is away on parental leave and will not be available for the remainder of the growing season. If you suspect late blight in your tomato crop, please reach out to Amanda Tracey ( 51) to confirm the diagnosis. Late blight symptoms caused by the US-23 genotype have been observed in New York and Wisconsin on potato, but there are no reports of symptoms on any crops in Ontario or Michigan.Ī summary of fungicides for late blight management is available here. infestans at 1 of 8 sites for the July 22-25 sampling period and 2 of 8 sites for the July 29-August 1 sampling period. Spornado (left) and rotorod (right) spore traps setup at Ridgetown Campus, University of Guelph.ĭNA of Phytophthora infestans, the organism that causes late blight, was detected by Spornado traps at 1 of 8 sites for the July 15-18 sampling period, 4 of 8 sites for the July 18-22 sampling period, 7 of 8 sites for the July 25-29 sampling period and 2 of 8 sites for the July 29-August 1 sampling period. 1), along with the BliteCast forecasting model. We are comparing the Spornado and rotorod spore traps at eight sites in Kent County (Fig. By: Cheryl Trueman, Department of Plant Agriculture, Ridgetown Campus – University of Guelph and Amanda Tracey, Vegetable Crops Specialist, OMAFRA, RidgetownĪs mentioned in a previous post, this is Year 1 of a three-year research project to assess the value of different spore traps and forecasting models to predict late blight risk for field tomatoes. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |