Papaya (Carica papaya)

Anthracnose (Colletotrichum gloeosporioides )

Symptoms

  • Disease occurs both in field and in storage conditions.
  • The spots on fruits first appear as brown superficial discolouration of the skin which develops into circular, slightly sunken areas and 1 to 3 cm in diameter.
  • Gradually the lesions coalesce and sparse mycelia growth appears on the margins of the spots.
  • Under humid conditions, an encrustation of salmon pink spores is released.
  • Infection at early stages of fruit results in mummification and deformation.

Management

  • Diseased leaves, twigs, gall midge infected leaves and fruits, should be collected and burnt.
  • Covering the fruits on trees, 15 days prior to harvest with news or brown paper bags.

Chemical Control

Sl.No Generic Name Trade Name Color code Dosage/litre Knapsack Sprayer (Capacity 10L) Recommendation Remarks
Per acre (200 L) Per hectare (500 L)
1 Mancozeb 75 WP Devidayal M-45, Dhanuka M-45, Dithane, Dithane M-45, Hilthane, Hindustan M-45, Indofil M-45, Izeb M-45, Manzate, Luzen 45, Macoban M-45, Mancosaan, Mancosaan M-45, Manzeb 75 WP, Maneb Manzane, M-Guard, Savour M-45, Tata M-45, Eurofil-NT, Uthane M-45, Veera, Zinthane Green 3 g/litre of water 30 g 600 g 1500 g
2 Copper Oxychloride 50 WP Bensaan, Blitox, Blue copper, Bluetrox, Copter, Cupramar, Cuprina, Dhanucop, Fytolan, Fytox, Fytran, Fytolan, Hilcopper, Killex copper, Maincop Dhanucop, Star cop, Tagcop, Trucop Blue 2-3 g/litre of water 20-30 g 400-600 g 1000-1500 g
3 Carbendazim 50 WP Bavistin, Benfil, Bengard, Benlate, Benmain, Bensaan, B-stin 50 WP, JK Stein 50 WP, Carben, Carziim 50, Dhanustin, Dhanustin 50 WP, Fungiguard, Gancarzin 50, Glizim, Mintho, Tagstin, Tiara, Zoom Green 1 g/litre of water 10 g 200 g 500 g
4 Chlorothalonil 75 WP Cluch 70 WP, Ishaan, Kavach 75 WP, Odeon Blue 1.5-3 g/litre of water 15-30 g 300-600 g 750-1500 g
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Extremely Toxic
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Highly Toxic
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Moderately Toxic
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Slightly Toxic