Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »

Sclerotinia - an underestimated greenhouse disease

Sclerotinia sclerotiorum, better known as white mold or cottony mold, is not talked about as a serious greenhouse disease. However, it can cause root rot, stem rot, blighting of foliage and leaf petioles in a wide variety of greenhouse crops, including alyssum, begonia, gazania, geranium, gerbera, gloxinia, larkspur, lobelia, petunia, stocks, vinca and zinnia.

It is more commonly found in field crops such as cabbage, carrot, clover, common bean, celery, cilantro, citrus, cucumber, eggplant, lettuce, various melons, peanut, pepper, potato, soybean, squash and tomato, where high humidity and rain can exacerbate the disease. It is not known to attack grasses.

The first visible symptoms of Sclerotinia include light brown lesions that form on stems, leaves or flowers. These spots appear as water-soaked, but in some plant species it appears as a dry rot. As it progresses, plant tissue is quickly destroyed, often with a narrow transition from tan, diseased tissue to normal tissue. If infection occurs in the stem or crown of a plant, a lesion can girdle the stem, causing wilting of the leaves, which can turn yellow and then brown. Eventually, the whole stem dies. If canopies are dense and humidity is high, the disease can quickly spread throughout a single plant and transfer from one plant to another.

Read more at PRO-MIX (Troy Buechel)

Publication date: 3/6/2018



Other news in this sector:

3/16/2018 Bioline expands Amblyseius andersoni line with new sachet format
3/15/2018 "Got aphids? Call in the reinforcements with banker plants"
3/15/2018 UK: New tool for powdery mildew control
3/14/2018 "Promising results in assessing new methods in IPM"
3/14/2018 Bayer publishes crop protection safety studies
3/13/2018 Italy: TYLCV variant risks damaging entire economy
3/13/2018 Spanish pepper grower successful with predatory mite
3/12/2018 Countries get heads up about leafminer invasion thanks to Virginia Tech
3/9/2018 Sri Lanka: Increased awareness about pest management and food safety
3/8/2018 Nufarm acquires Century portfolio from Syngenta and Adama
3/8/2018 Russia intercepts 250 kg of thrips-infected strawberries
3/7/2018 Protecting pollinators: What role can the greenhouse industry play?
3/6/2018 Philippines: Experts to increase plum tomato productivity
3/5/2018 BASF’s 2018 science competition focuses on plant stressors
3/5/2018 British-Chinese research unlocks strawberry disease resistance
3/5/2018 US (NH): Most prevalent weeds on New England's organic vegetable farms
3/1/2018 BASF expects to earn €3.5 billion with crop protection innovation
3/1/2018 UK: Stopping soil spread key to preventing lettuce Fusarium wilt
3/1/2018 UK: New priorities announced for plant protection research programme
3/1/2018 The birds and the bees... and the bats and monkeys