Diseases of Mulberry Plant

1. INDIRA GANDHI KRISHI VISHWAVIDYALAYA
RAIPUR (C.G)
MAHAMAYA COLLEGE OF AGRICULTURE
SIYADEHI DHAMTARI (C.G)
TOPIC- DISEASES OF MULBERRY PLANT
SUBMITTED TO
Mr. Umashankar Kaushik SUBMITTED BY
(Deptt. Of Entomology) Manish Kumar Sahu
4th Year 2nd Sem.

2. Content
 Disease Table
 Leaf Spot Disease
 Powdery Mildew
 Leaf Rust
 Root rot
 Bacterial Leaf Blight
 Root knot
 Precautions to be taken

3. Disease Table

4. Leaf Spot Disease
 Pathogen: Cercospora moricola
 Crop loss : 10-12 %
 Symptoms :
• Brownish necrotic, irregular spots appear on the leaf surface.
• Spots enlarge, extend and join together leaving characteristic ‘shot
hole’.
• Leaves become yellow and wither off as disease becomes severe.
 Control measures to be adopted:
• Removal of the weeds in the mulberry garden.
• Spraying carbendazim @ 500-625 g/ha
Fig:- Symptoms of Leaf Spot

5. Powdery Mildew
 Pathogen : Phyllactinia corylea
 Crop loss : 5-10%
 Symptoms :
• Initially, white powdery patches on lower surface of leaves are seen
which later cover the entire leaf surface.
• Later turn black to brown in colour.
• Infected leaves turn yellow and fall off.
 Control measures to be adopted:
• Providing wider spacing
• Growing resistant varieties like MR1, MR2 and China White.
• Spraying Carbendazim @ 500-625 g/ha
• Spraying Dinocap 250 ml/ha
• Releasing yellow lady bird beetles and white spotted lady bird beetles,
since they feed on the mildew fungus.
Fig:-Symptoms of Powdery
Mildew

6. Leaf Rust
 Pathogen : Cerotelium fici
 Crop loss : 10-15%
 Symptoms :
• Presence of small, irregular reddish to rusty brown spot on older
leaves on lower surface.
• Leaves become yellowish and wither off prematurely.
 Control measures to be adopted:
• Avoid delayed leaf harvest.
• Spraying Kavach (Chlorothalonil 75 % WP) @ 500-625 g/ha
• Providing wider spacing.
• Spraying carbendazim @ 500-625 g/ha
Fig:- Symptoms of Leaf Rust

7. Root rot
 Causal organism : Rhizoctonia bataticola (= Macrophomina
phaseolina)
 Crop loss: 15 % and above depending on the soil health and
climate.
 Symptoms:
• Initial stage, leaf blade turn to wilt and then spread to entire
plant.
• Later stage, black fungus are appear on branches and stem.
 Control measure to be adopted:
• A target specific new formulation “Navinya” (herbal 80% &
chemicals 20%) is used for the control of root rot disease of
mulberry.
• At root surface pour copper oxychloride( 2gm/lit of water).
• Application of Trichoderma viride @ 25gm/plant.
• Application of Bacillus substilis @ 25gm/plant at the time of
planting or pruning.
Fig:-Symptoms of Root rot

8. Bacterial leaf blight
 Pathogen : Pseudomonas mori
 Crop loss : 5-10%
 Symptoms :
• Numerous irregular water soaked patches on the lower surface of
leaf.
• Leaves become curled, rotten and turn brownish black in colour.
• Black longitudinal lesions are seen on the bark of young shoots.
• Yellowing and defoliation.
 Control measures to be adopted:
• Follow wider spacing of plantation or paired row planting system.
• Spraying 0.1% of Streptomycin or Streptocycline.
Fig:-Symptoms of BLB

9. Root knot
 Causal organism: Meloidogyne incognita (Nematode)
 Crop loss: 20 %
 Symptoms:
• Severely affected mulberry plants show stunted growth with low water
moisture in leaves, later yellowing of leaf margins.
• Formation of knots / galls on roots is the main indicator of the disease
symptom.
• Galls are spherical and vary in size; young galls are too small and
yellowish-white in colour, old galls are big and pale brown.
 Control measure to be adopted:
• Deep ploughing in summer.
• Applying neem cake @ 1000 kg/ha.
• Applying Carbofuran 3G @ 30 kg/ha/year in four split doses.
Fig:-Symptoms of Root
knot

10. Precautions to be taken:
 Do not irrigate the treated mulberry plants during the first 4-5 days.
 Remove the dead mulberry plants and burn and expose the soil to sunlight.
 Plant the new saplings after dipping their roots in 0.2 % Navinya solution for 30
minutes before planting.
 Maintain optimum organic content >0.5% in soils by applying compost/ manure.
 During summer months irrigate the garden to keep the soil moisture around 50-60% to
prevent the disease.

11. REFERENCES
 Chetty J.Sulochana , Ganga G (2017) , An Introduction to Sericulture , Delhi,CBS Publishers
& Distributors.
 https://agritech.tnau.ac.in/sericulture/disese%20mgt_mulberry.html
 http://www.eagri.org/eagri50/PATH371/lec18.pdf
 https://silks.csb.gov.in/coochbehar/wp-content/themes/Common_District/coochbehar/dpm-
frame.html