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Technologies

TECHNOLOGIES/ PRODUCTS FOR MANAGEMENT OF MULBERRY DISEASES 

 

1. CONTROL OF LEAF SPOT ( Cercospora moricola)

Utility: For management of leaf spot disease caused by Cercospora moricola

Name of the disease: Leaf spot

Pathogen : Cercospora moricola

Occurrence: Rainy and winter season

Crop loss:   10-12%

Symptoms: Brownish necrotic & irregular spots on leaf surface and  shot holes

Control measures:

Physical : Removal & burning of   affected leaves

Cultural : Adopt of wider spacing

Chemical: 0.2 % Bavistin (Carbendazim 50 % WP)

Safe period: 7 days

Developed by:

Developed by: Central Sericultural Research & Training Institute, Mysore- 570 008, Karnataka.

 

 

2. CONTROL OF LEAF RUST ( Cerotelium fici)

Utility: For management of leaf rust disease caused by Cerotelium fici

Name of the disease: Leaf rust

Pathogen :Cerotelium fici

Occurrence: Rainy and winter seasons

Crop loss:   10-15%

Symptoms: Pinhead like brown eruptive lesions on leaf surface

Control measures:

Physical: Removal & burning of   affected leaves

Cultural: Adopt of wider spacing

Chemical: 0.2 % Kavach (Chlorothalonil 75 % WP)

Safe period: 14 days

Developed by: Central Sericultural Research & Training Institute, Mysore- 570 008, Karnataka.

 

 

3. CONTROL OF POWDERY MILDEW (Phyllactinia corylea)

Utility: For management of powdery mildew disease caused by Phyllactinia corylea

Name of the disease: Powdery mildew

Pathogen :Phyllactinia corylea

Occurrence: Winter seasons

Crop loss:   5-10%

Symptoms: White powdery patches on the ventral surface of leaves

Control measures:

Physical: Removal & burning of   affected leaves

Cultural: Adopt of wider spacing

Chemical: 0.2 % Karathane (Dinocap 30 % EC) / Bavistin               

Safe period: 14 days for Karathane and 7 days in case of Bavistin

Developed by: Central Sericultural Research & Training Institute, Mysore- 570 008, Karnataka.

 

 

4. CONTROL OF FUNGAL LEAF BLIGHT

(Alternaria alternata/ Fusarium pallidoroseum)

Utility: For management of fungal leaf blight caused Alternaria alternata/ Fusarium pallidoroseum

Name of the disease: Powdery mildew

Pathogens: Alternaria alternata/ Fusarium pallidoroseum

Occurrence: Summer and rainy

Crop loss:   5-10%

Symptoms: Browning/blackening of the leaf tip or edge of leaf lamina

Control measures:

Physical: Removal & burning of   affected leaves

Cultural: Adopt of wider spacing

Chemical: 0.2% Dithane M-45 (Mancozeb 75 % WP)

Safe period: 14 days

Developed by: Central Sericultural Research & Training Institute, Mysore- 570 008, Karnataka.

 

 

5. CONTROL OF BACTERIAL LEAF BLIGHT

 (Pseudomonas syringae pv. mori Xanthomonas campestris pv. mori )

Utility: For management of bacterial leaf blight caused Pseudomonas syringae pv. Mori/  Xanthomonas campestris pv. mori

Name of the disease: Bacterial leaf blight

Pathogens: Pseudomonas syringae pv. mori Xanthomonas campestris pv. mori

Occurrence: Rainy and winter

Crop loss:   5-10%

Symptoms: Blackish brown water soaked patches leading to curling & rotting of     

leaves

Control measures:

Physical: Removal & burning of   affected leaves

Cultural: Adopt of wider spacing

Chemical: 0.2% Dithane M-45 (Mancozeb 75 % WP)

Safe period: 14 days

Developed by: Central Sericultural Research & Training Institute, Mysore- 570008, Karnataka.

 

 

6. TRI MIX

Utility: It is a bio consortium for management of root rot disease of mulberry. It involves the region specific isolates of Trichoderma harzianum.

Method of application:

One kg Tri-mix is mixed with 10 kg Neem oil cake and 30 kg FYM (for 80 plants). Roots of infected plants are exposed and the mixture is applied @ 500 g/plant (3 times/ year at an interval of 4 months) followed by irrigation. The technology reduces the disease severity up to 75- 80%.

Developed by: Central Sericultural Research & Training Institute, Mysore- 570 008, Karnataka.

 

  

7. NURSERY GUARD

Utility: For management of nursery diseases of mulberry

Method of application:

  • Mix 1 kg Nursery-Guard (Trichoderma pseudokoningii) with 60 kg Farm Yard Manure (sufficient for 2000 cuttings). Store the mixture under shade and keep it moistened by adding 10 - 12 litres of water for one week.
  • After one week, broadcast the mixture in to nursery beds @ 2 kg/m2 and mix well in the soil.
  • Soak the cuttings in Indofil M-45 (0.1 %) solution for 30 minutes and plant the cuttings in to treated beds followed by irrigation. 
  • For direct plantation of cuttings in to main field, apply ‘Nursery Guard’ mixture in pits @ 50 g/pit before plantation.

Technology developed by: Central Sericultural Research & Training Institute, Mysore- 570008.

 

 

8. BIONEMA

Utility: To manage root knot disease of mulberry. This involves the application of ‘Bionema’ (Verticillium chlamydosporium) after mixing with FYM and neem oil cake in the ratio of 1:200:24 for control of root knot disease of mulberry.

Method of application:

  • Mix one kg Bionema with 200 kg FYM (for 1000 plants) and 24 kg neem oil cake, and store the mixture under the shade and keep moistened by sprinkling 30-32 liters of water for about one week.
  • Exposethe roots of infected plants by digging to a depth of 15 cm. Cut and remove bunches of knots on the roots and burn. 
  • Apply the prepared mixture @ 200 g/ plant around the exposed roots (3 times/ year at an interval of 4 months) during cultural operations/ fertilizer application followed by irrigation.
  • Bionema is a bio-nematicide, which is not having any toxic effect on both mulberry and silkworm.

Technology developed by: Central Sericultural Research & Training Institute, Mysore- 570008.

 

 

9. RAKSHA

Utility: For control of soilborne disease of mulberry

This involves the application of both Indofil M-45 and biofungicide, ‘Raksha’ (Trichoderma harzianum). Prepare Raksha mixture by mixing of 1 kg Raksha with 50 kg FYM (for 100 plants), store the mixture under shade and keep moistened by adding 8-10 liters of water for over one week.

Method of application:

  • Uproot the diseased plants and burn.
  • Raksha does not have any toxic effect on both mulberry and silkworm. 
  • Apply 10 g of Indofil M-45 / pit and plant the new saplings after soaking in Indofil M-45 (0.1%) solution for 30 minutes. 
  • After 15-20 days, apply the Raksha mixture @ 500g/plant in the root zone of the plant followed by irrigation.
  • Continue application of Raksha for one year at an interval of 4 months.

Technology developed by: Central Sericultural Research & Training Institute, Mysore 570 008, Karnataka.

 

Mulberry (Morus spp.) is cultivated in many countries across the world for its foliage which is the only food for silkworm Bombyx mori L. Mulberry cultivation in India, the second biggest producer of silk and the largest consumer has increased over years and is projected to reach 2.4 lakh ha, a whopping 32.60% increase over the present mulberry area by the end of 2017.

The tropical climate of India allows for luxuriant growth of mulberry. This perennial crop is exposed to several disease causing pathogens, fungal, bacterial, mycoplasma, viral, nematode, leading to deterioration of production and quality of feed. The quantum loss in terms of foliage and loss in cocoon crop due to inferior quality feed are considerable. Many studies were carried out during the last four decades on different aspects of mulberry diseases including etiology, predisposing factors, resistance/ susceptibility reactions, management strategies etc.  This portal is a unique compilation of information aimed at beneficiary researchers, teachers, students, sericulturists and policy makers who frequently need to source information.

Disease forewarning 

Event

Manage powdery mildew during winter season
Powdery mildew is a serious disease of mulberry during winter season. Presence of characteristic white patches on the lower side of the leaves and yellowing of followed premature defoliation takes place. The disease will be severe in mulberry plants growing under shades and also where the soil moisture content is very high. The disease causes deterioration in the nutritive value of mulberry leaves which are unfit for silkworm rearing. Rearing with mildew infected leaves weaken the silkworm and the worms would be prone to diseases and hence decline qualitative and quantitative characters of cocoons. 
Management 
The disease is to be managed with application of Bavistin 50WP at 0.2% concentration. 200 liters of spray solution is required for spraying in 1 acre mulberry garden. The spray solution can be prepared by mixing 800g Bavistin (50 WP) in 200 liter of water. 
Safe period: The sprayed leaves can be utilized for silkworm rearing 7 days after the spray. 
Precautions: 
  • Spray during the cool hours i.e. early morning or evening.
  • Strictly follow the safe period.
  • Avoid water stagnation in the mulberry garden. 

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