They love warm, humid weather and can become deadly during this period. It can survive winter in infected plant debris, or on the soil and can infect plants after several years. This potato disease is caused by a fungus called Alternaria solani. Irrigate early in the day to allow leaves to dry before night.Use a thick layer of mulch to prevent tuber infection.Use disease-free varieties of seed potatoes to grow the plants.Destroy or bury all crop debris and tubers at the end of each season.Late blight disease can be fatal to the plants. Infected tubers have dry brown-colored spots on their skins and flesh.The stems become black from the tips and dry out eventually.Sometimes, spots appear on the underside of leaves. Affected leaves of the plant wilt and turn brown within weeks.It mainly damages leaves, stems and tubers. Late blight is one of the most important potato diseases. The pathogen becomes highly active in humid conditions, low temperature and leaf wetness. The pathogen survives in plant debris in the soil and spreads mainly through the soil and infected seed tubers. The late blight disease is caused by a fungus-like organism Phytophthora infestans. Clean garden tools with a disinfectant solution after use.Use crop rotation with pastures, cereals and non-solanaceous crops for periods of more than 5 years.Use certified seed from reliable sources.Serious infection can cause the tubers to rot. Sometimes fluids might come out of tuber eyes.If you cut the tubers in half you would find black or brown rings or white to brown pus.It stats to wilt, from the tips of the leaves or where the stems branch out, and then spreads to all parts of the plant.The symptoms of bacterial wilt are visible on all parts of infected plants.The disease spreads from field to field or from plant to plant within field via infected seed, air, water, soil, gardening tools, etc Symptoms: Other than potatoes this also affects plants like chili, tomato, tobacco and egg plants. The bacterium enters into the body of the plant through open wounds in roots. Bacterial Wilt: Pathogen:Ī soil-borne bacterium named Ralstonia solanacearum causes this disease in potatoes. The best way to control potato wart disease is to use immune varieties for growing potatoes. Infected tubers turned into warty mass and turn black with age.The eyes develop into characteristic warty, cauliflower-like swellings.Sometimes you will find more than one tumors in the tubers.In this case, potatoes grow swelling or tumors.The spores of the fungus can remain viable in contaminated soil for many years. Potato wart disease is caused by the soil-borne fungus Synchytrium endobioticum. Spray again after a few weeks to protect new growth.It is one of the most dreaded diseases of potatoes. Start from June, especially if the weather’s wet. Spray potato crops with a protective fungicide before signs of blight appear.When they're ready for harvest, make sure you dig up every last potato so blight has nowhere to hide during the winter.Crop rotation helps prevent a build up of disease spores in the ground, and avoids infected plants growing from potato tubers that were missed during last year’s harvest.In dry weather, water plants in the morning so that any moisture on the leaves can evaporate during the day.Better airflow helps the foliage to dry quickly after rain, slowing the spread of blight between plants. Always choose an open planting site with good airflow and leave sufficient space between plants.Early crops, harvested before the worst of the blight season, have less chance of being exposed. Plant healthy, disease-free seed potatoes from a reputable supplier.There’s little you can do to save an infected crop, so stopping blight is all about taking precautions to reduce the chances of the disease attacking your crop: Careful harvesting and crop rotation reduces your chances of getting potato blight.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |