Helga George, PhD 
Cool, wet conditions favor downy mildew infection on turnips. Not only can the pathogen destroy the leaves, but it can also spread into the root and cause the turnips to crack. Fall crops are particularly susceptible to this fungus-like organism. Read on to learn how to prevent and control this disease.
Bacillus subtilis can control a range of fungal and bacterial pathogens in the soil and on leaves. It directly inhibits other microbes and also stimulates the plants to control pathogens using their own natural resistance mechanisms. Read on to learn more about these versatile bacteria.
Species of the fungus Alternaria can infect your turnips, causing leaf spots and spreading to the seed pods. There are a number of methods to prevent this disease, and both microbial and synthetic fungicides that will control it. To learn how to prevent and control this disease, read more now on Gardener’s Path.
Although yellowjackets consume a large volume of agricultural pests, they are very aggressive when protecting their nests and cause most of the stinging deaths in the US. Read on to learn how to manage these inhospitable guests on your property.
Black rot of turnips caused by Xanthomonas campestris pv. campestris is a devastating bacterial disease that is easily spread. Since it is very difficult to control, preventing it from becoming established is your best bet. Read on to learn how to keep your turnips from becoming infected with black rot.
Cotton root rot infects more than 2,300 plant species in the southwest, including apples, peaches, almonds, and most other fruit and nut trees. While the disease is usually fatal, there are some steps you can take that might save your tree. Read on at Gardener’s Paths to find what to do if your tree has this disease.
Trichoderma harzianum T-22 is a highly developed fungal strain that effectively controls a number of fungal pathogens of plants. This fungus colonizes plant roots and does not affect other beneficial microbes like mycorrhizae or Rhizobium. Read on to learn more about this fascinating organism now on Gardener’s Path.
The bacteria Streptomyces lydicus colonize plant roots and protect them against fungi and bacteria that cause disease. They can also be sprayed on plant leaves to control foliar pathogens. These bacteria are safe for people and beneficial insects. Read on to learn how they work and how to use them in your garden.
White rust infects cruciferous plants, including turnips, around the world. It produces white pustules on the leaves and can distort the flower heads. However, this organism does not kill the plants. Read on to learn how to prevent white rust using cultural control methods.
Wet soils encourage the development of fatal Phytophthora infections on fruit trees. However, you can take measures to prevent these infections. Read on to learn how to avoid collar and crown rot on your trees.
Do your shade, nut, or fruit tree limbs and trunks have unsightly growths on them? If so, they are probably burr knots or crown gall. One is due to roots growing on the stems, while the other is a bacterial infection. Prevention is the best bet for these disorders. Learn how to prevent and, in some cases, control them.
Walnut husk flies are damaging pests, particularly in California and Washington State. The flies pupate in the ground for 1-2 years and spend their larval stage hidden inside the husks. However, by monitoring the adults, you will know when to treat these pests before they lay their eggs. Read on to learn how to control these voracious insects.