Mango Diseases A

Lecture To ToT trainees ( FFS) By

Mr. Allah Dad Khan Provincial Coordinator IPM

KPK MINFAL Pakistan

Anthracnose   The disease is incited by Colletotrichum

gloeosporioides Penz. ( Glomerella cingulata (Stons.) Spauld & Schrenk).It affects all the above ground parts of the plant particularly leaves, petioles, twigs, blossoms and fruits. It is one of the important post-harvest diseases of mango. Disease may be reduced by removal of diseased parts from the tree and its destruction by burning. Infection on blossom could be reduced effectively by 2 sprays of Carbendazim (0.1%) at 15 day intervals. Its foliar infection can be managed by 2 sprays of Copper oxychliride (0.3%), while latent infection of the pathogen on fruits could be reduced by pre-harvest sprays of Thiophanate methyl or Carbendazim (0.1%). Post-harvest infection of this pathogen can be managed by post-harvest dip of fruits either with hot water alone (45 ± 20°C ) or hot water in combination of fungicides, Thiophanate methyl or Carbendazim (0.05%). Covering of fruits on tree, 15-days prior to harvest with news or brown paper bags and use of bio-control organism, Streptisporangium pseudovulgare were also found effective in management of its post-harvest phase

Anthracnose

Anthracnose symptoms on mango fruit

AnthracnoseAnthracnose symptoms on mango fruit

Anthracnose symptoms on mango fruit

AnthracnoseAnthracnose symptoms on mango fruit

Anthracnose symptoms on mango fruit

AnthracnoseAnthracnose symptoms on mango fruit

Anthracnose symptoms on mango

AnthracnoseAnthracnose symptoms on mango

Anthracnose symptoms on mango fruit

Anthracnose

Anthracnose symptoms on mango fruit

Anthracnose

Anthracnose symptoms on mango fruit

AnthracnoseAnthracnose symptoms on mango

  The disease is caused by Oidium

mangiferae Berthet. The disease affects inflorescence, leaves and young fruits. The characteristic symptom of the disease is the white superficial powdery growth of the fungus comprising a large number of conidia borne on conidiophores. The disease can be managed by pruning of diseased leaves and malformed panicles and three sprays of fungicides at different stages starting with Wettable Sulphur (0.2%) at the panicle size of 7.50 -10.00 cm followed by Dinocap (0.1%) after 15-20 days of first spray and Tridemorph (0.1%) after15-20days of second spray. Wettable Sulphur (0.2%) can be used in all the three sprays and number of sprays may be reduced as per appearance time of disease.

Powdery Mildew

Powdery Mildew

Bacterial Leaf Spot

Symptoms

Angular, water-soaked spots on leaves which coalesce and turn black; black cankerous lesions on stems which crack and exude a gummy substance; irregular black lesions on fruits which extend into the flesh and exude gum; fruits dropping from plant

Bacterial Canker

Bacterial Black Spot Xanthomonas campestris

Symptoms The disease is caused by an

algae, Cephaleuros virescens Kunze and manifests itself in the form of rusty red fructification of the alga on the surface of leaves, petioles and twigs. Initially the spots are greenish grey and velvety in texture which finally turn to reddish brown. After shedding the spore the algal matrix remains attached to leaf surface, leaving a creamy white mark at the original rust spot. The disease can be reduced by supply of balanced nutrients to the plants and two sprays of Bordeaux mixture (1%) or Copper oxychloride (0.3%) in the month of July at 15 days interval.

Red Rust