PREVENTION AND TREATMENT FOR “RED ALGA” DISEASES ON COFFEE PLANTS – Thuốc trừ sâu sinh học,thuốc trừ nấm,thuốc trừ rầy,thuốc diệt chuột

PREVENTION AND TREATMENT FOR “RED ALGA” DISEASES ON COFFEE PLANTS

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Cây Cà Phê

PREVENTION AND TREATMENT FOR “RED ALGA” DISEASES ON COFFEE PLANTS

Posted On April 5, 2017 at 11:58 pm by / 122 Comments

  1. Symptoms:
    The lesion is round or slightly rounded, 3-5mm in size and raised slightly above the surface of the branch, due to the growth of mosses, which looks like a soft, yellowish-green velvet layer. After the lesion grows wider, when the diameter reaches more than one centimeter and turns to yellowish brown, the middle of the lesion is covered with dark yellow.    In young shoots, the infection of algae can create cracks that make branches susceptible to other secondary diseases.

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2. Causes, conditions for development of the disease:

– Disease caused by algae: Cephaleuros virescens caused, this algae is quite common in many plants such as durian, citrus, persimmon, coffee …. Diseases reduce the photosynthesis of plants, making plants developed poorly.

– Red algae grow in conditions of heavy rain, wet. The algae appear mainly in the lower layers where there is lack of light.

 3. Prevention:

– Fertilizer, irrigation. Create ventilation in the garden by means of pruning.

– Copper Hydroxide (Champion 77WP, Champion 57.6 DP, Champion 37.5 SC, …) can be used for prevention.

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122 thoughts on “PREVENTION AND TREATMENT FOR “RED ALGA” DISEASES ON COFFEE PLANTS”

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