When it comes to controlling common scab in Solanum tuberosum , there are a few options available , including the manipulation of fungicides . One commonly used fungicide for this purpose is pentachloronitrobenzene , also cognize as Blocker . This fungicide is applied as an in - furrow soil intervention and has been found to efficaciously suppress vulgar scab .

Another antimycotic that has shown promise in controlling plebeian scab is chloropicrin , also known as Strike . Chloropicrin is a soil fumigant that is used to treat the grime before plant . It has been account to sour well in reducing rough-cut scab as well as other ground - borne disease .

Personal experience : I have used chloropicrin in my own garden to master common scab in white potato , and I have found it to be quite effective . Before planting the spud , I apply chloropicrin grant to the commend dosage and incorporated it into the grunge . This helped to create a hostile surround for the scab - have pathogen and resulted in importantly reduced scab incidence on the potato Tuber .

It is important to notice that fungicides alone may not supply consummate restraint of unwashed scab . This disease is because of a grunge - deliver bacterium called Streptomyces scabies , which can hold out in the dirt for several years . Therefore , it is all-important to employ an integrated approach to wangle common rat .

Here are some additional measures that can be take to minimize the natural event of common scab :

1 . Crop rotation : Avoid planting potatoes or other susceptible crops in the same area for consecutive years . This serve to break the disease cycle and reduce the buildup of scab - causing pathogens in the soil .

2 . ground pH adjustment : Common blackleg thrive in alkaline soil conditions . align the pH of the grease to a somewhat acidic range ( around 5.2 to 5.5 ) can help dilute the severity of scab . This can be done by adding amendment such as elemental sulphur or agricultural lime , depending on the existing soil pH.

3 . right irrigation : wet stress can exacerbate vernacular scab . Ensure that potato are adequately watered , especially during tuber initiation and development . annul over - irrigation , as undue wet can also favor the developing of scab .

4 . Planting disease - repellent variety : Some potato kind have been breed to be less susceptible to common scab . Choosing tolerant varieties can help deoxidise the risk of scab development .

5 . sound crop hygienics : murder and destroy any infected industrial plant debris or tubers to forestall the feast of scab - cause pathogens . Practice good sanitation by clean tools and equipment after work in infested surface area .

While there are fungicides available for controlling common strikebreaker in potatoes , such as pentachloronitrobenzene ( Blocker ) and chloropicrin ( Strike ) , it is important to adopt an integrated approach to efficaciously manage this disease . incorporate ethnic practices like crop rotation , adjusting soil pH , proper irrigation , planting disease - resistant varieties , and defend ripe crop hygiene can all contribute to reducing the occurrence and severity of vulgar scab .

Caroline Bates