উত্তর সমূহ

1. সৈয়দা সিফাত জাহান, অতিরিক্ত উপপরিচালক (শস্য), লালমনিরহাট

   ০২-০৭-২০১৯

   To prevent the problem:

   • Avoid placing nursery in a shaded, humid place.

   • Select well-draining nursery sites away from tomato fields.

   • Elevate seed beds to improve drainage.

   • Mix seeds with red copper during sowing.

   • Transplant only disease-free seedlings.

   • Ensure good aeration through spacing of seeds (>5 cm, 2" space) and staking of plants with wooden sticks.

   • Do not over water because this favours the diseases. You may only irrigate early in the day to allow rapid drying of leaves.

   • Disinfect seedling pots and trays with bleach (=NaOCl) before storage. Wear gloves or wash hands with water afterwards, because bleach is toxic.

   When first symptoms appear on seedlings action must be taken:

   • Uproot diseased seedlings. Burry deeply, or put into plastic bags and burn.

   • Fungicide-treated certified seeds are, if available, of big help.

   • Once your seeds or seedlings are affected, chemical sprays are of no help.

   • Further spread can be slowed by spraying products containing mancozeb. Spray max 2x per season.

   • Further spread can be slowed by spraying products containing mancozeb combined with copper hydroxide or metalaxyl.

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