- The disease spreads by Phytophthora fungus. Potato late blight is a pandemic disease that can extremely affect potato crop.
- Late blight destroys the green leaves of plants within 5 days.
- In this disease, spots start to appear on the edges of the leaf and gradually spread all over it, branches and stems also get affected and later the tubers as well. On the lower surfaces of the leaves white color shells are formed, which later turn brown and black.
- Due to the infection of the leaves, the size of potato tubers is reduced and production decreases and the entire field is destroyed when the weather gets favorable for the disease.
- Metalaxyl 30% FS @ 10 gram should be dissolved in 10 liters of water and dipped in seeds and treated and dried it.
- Use Chlorothalonil 75% WP @ 250 gram/acre or Metalaxyl 4 % + Mancozeb 64% WP @ 250 gram/acre or Tebuconazole 10% + Sulphur(s) 65% WG @ 500 gram/acre or Kasugamycin 5% + Copper Oxychloride 45% WP @ 300 gram/acre
- As a biological treatment Pseudomonas Fluorescens @ 250 gram/acre or Trichoderma Viride @ 500 gram/acre.
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