TOMATO LATE BLIGHT HOW TO
TOMATO LATE BLIGHT PLUS

The copper fungicide Badge X2 (1.75 lb/A) was applied with Actinovate AG (12 oz/A) on 14 and 22 August, and with Regalia (2 qt/A) on 17 August, 31 August and 7 September. Following standard procedure for fresh-market tomato production on Long Island, plants were staked and trellised as they grew using the Florida weave trellising system with 4-ft stakes placed between plants.ДЇungicides approved for organic production were applied to all plots to suppress late blight after finding symptoms in the plots. Tomato seedlings were transplanted by hand on 5 July into holes opened in the plastic mulch by a Waterwheel transplanter that also placed in the holes a starter fertilizer, NeptuneвЂ™s Harvest Benefits of Fish (2-4-1 N-P-K). Annual ryegrass was planted between rows of plastic mulch to establish a living mulch. Next drip tape was laid as the rows were covered with black plastic mulch. Pro-Grow 5-3-4 organic fertilizer at 2000 lb/A (100 lb/A N) was spread over rows to be planted, then incorporated. The experiment was conducted in a field dedicated to research on organically-produced crops since 2001. Additionally, resistant varieties are good вЂњinsuranceвЂќ in areas where late blight occurs erratically in order to minimize need for preventive fungicide applications.

Left unmanaged, late blight is much more likely than other diseases to completely destroy a crop and also to have devastating impact on other tomato plantings in a region due to the quantity of pathogen spores that can be produced and easily dispersed by wind. ThatвЂ™s because it can be very difficult to control this disease with fungicide applications started after onset with a susceptible variety, and the disease cannot be вЂњtoleratedвЂќ. Resistant varieties are a valuable tool for managing diseases, particularly late blight. Many were more aggressive on tomato and more tolerant of warm temperatures than genotypes like US-1 and US-8 that previously were dominantВ and mostly affected potato.В It started in 2009 when a new pathogen genotype (US-22) was introduced into the region onВ tomato transplants sold to home gardeners, which is how the epidemic started that year. From 2009 to 2012 on Long Island, symptoms were first observed in late May to mid June.Д¬hanges in occurrence of late blight was at least partly due to the fact there were new genotypes (strains) of the pathogen in the USA. Starting in 2009, the disease began occurring routinely in the northeastern USA, starting early in the growing season and severely impacting tomatoes. since 2011.Д«efore 2009, late blight occurrence on Long Island, N.Y., was sporadic with symptoms never found or not seen until October in most years. Maps of late blight reportsВ by county in U.S.

TOMATO LATE BLIGHT PLUS

Additional information about late blight and its management plus photographs.Those with same resistance genes as varieties evaluated in this study can be expected to exhibit similar ability to resist late blight. Find more resistant tomato varietiesВ released since these studies in the disease-resistant tomato variety lists.Technical reports on these and related experiments have been published.Blight spreads quickly, so the sooner you harvest healthy fruits, the better. If you spot an onset of blight, 'remove all healthy fruits and ripen them on trays in a shady spot indoors,' says John. They are not, however, recommended for canning or preserving. Generally, the tomatoes from blight-infected plants will still be safe to eat if you catch them early вЂ“ simply remove any black spots first. This will effectively mean the death of the plant anyway.' 'However, it is a fine balance and if too many leaves are removed, the plant has no means of photosynthesizing or drawing water up and therefore no means of providing nutrients or water to stems or developing fruits. 'But, it might be possible to slow the spread by removing infected leaves as soon as they are spotted. 'There is little you can do once the disease has appeared,' says the Amateur Gardening experts. Sadly, you may be disappointed: there is no cure.

TOMATO LATE BLIGHT HOW TO

If you see signs of this disease on your crop, you'll inevitably want to know how to treat tomato blight. (Image credit: Deborah Vernon/Alamy Stock Photo) What should you do with tomatoes that are infected with blight?

Tomato late blight