Beet leaf spot

One ISR-promoting PGPR product temporarily approved for use by the USEPA was Bacillus mycoides isolate J [61], a strain of a ubiquitous soil microorganism. This PGPR was once approved for experimental use in 2006 for controlling Cercospora leaf spot (Cercospora beticola) on sugar beets, but the approvals have since expired. To date,... 

Cercospora leaf spot beet and,38 carrot and, 61 pepper and.174 4 Chaenomeles, 55 Chafers... 

Triphenyltin hydroxide (Fentin) and triphenyltin acetate (Brestan) are used to combat potato blight, leaf spot on celery and sugar beet, rice blast, and coffee leaf rust. Tricyclo-hexyltin hydroxide (Plictran), bis(trineophyltin) oxide (Vendex or Torque), and 1-tricyclohexylstannyl-l,2,4-triazole (Peropal) have also been used for the contol of mites on apples, pears, and citrus fruits. 

Mancozeb is a fungicide used to control many fungal diseases such as blight, leaf spot, rust, downy mildew, and scab in field crops, fruits, nuts, vegetables, ornamentals, etc. In particular, it is used to control the following early and late blights of potatoes and tomatoes leaf spot diseases on celery, cucurbits, beets. 

The beticolins (ascertained structures shown, bO, 2,4,6,8,13,1, 3, and 1063-1 70, respectively. Fig. 13.29) are a fascinating fantily of closely related non-host-specific mycotoxins produced by several strains of Cercospora beticola, a fungus responsible for cercosporiosis, a leaf spot disease of sugar beet Beta vulgaris) (680-683). 

In 1973, a group of Department of Chemistry, Colorado State University, USA examined phytoalexins induced in Beta vulgaris leaves with Cercospora leaf spot of beet caused by Cercospora beticola infection. Generally, phytoalexins are produced by de novo synthesis in higher plants after the infection of fungal organism [38]. 

Powdery mildew. A fungicide should be used if the disease becomes prevalent in late July or August (Table 6.2). Some cereal triazole and strobilmon fungicides are approved for use in sugar beet for the control of mildew as well as rusts and Ramularia leaf spot. Sulphur can also be used for powdery mildew control. 

Blackleg Downy mildew Powdery mildew Ramularia leaf spot Beet rust Violet root rot Vector of rhizomania Cercospera leaf spot... 

Activity controlling anthracnose, scab and soil rot of cucumbers ( 9), leaf spot on celery (270 ) and sugar beet (829), bunch disease of pecan (2335) ... 

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