1. Dr. D.R. Saxena R.A.K. College of Agriculture, RVSKVV SEHORE- (M.P.)
Diseases of Soybean
Dr. D.R. Saxena
R.A.K. College of Agriculture, RVSKVV
SEHORE- (M.P.)

2. Yellow mosaic (ihyk ekstsd
;g jksx Qly dh fdlh Hkh voLFkk esa izjaHk gks ldrk gS A
ifRr;ksa ij xgjs ihys jax ds /kCcksa curs gSa ckn es lHkh iRrs ihys iM+ tkrs gSa A
;g jksx lQsn e[[kh }kjk QSyrk gS

3. Flower & pod production reduced. Seed size reduced
Symptoms of YMV
Yellow specks on young leaves
Yellow mottle
Maturity is delayed
Flower & pod production reduced. Seed size reduced
Irregular yellow & green patches & sight puckering & reduced leaf size

4. Characteristic of MYMV

5. Yield loss due to YMV Infection before flowering 75%
At the time of flowering
52%
After flowering
15%

6. Collar rot – Sclerotium rolfsi
Mycelial growth on the collar region of the plant
Moderately high temperature 25 ˚C
High moisture, crop canopy, soil reaction, high organic matter, etc.

7. Rhizoctonia areal blight (jkbtksDVksfu;k vaxekjh
nks ekg dh Qly esa ;g jksx fn[kkbZ ns ldrk gS A
fupyh ifRr;ksa ls ;g jksx vkjHk gksrk gS A
ifRr;ksa ij dRFks jax ds /kCcs cuus yxrs gS vkSj ifRr;ksa fxjus yxrh gSaA
jksxk.kq Ckht vkSj Hkwfe ij thfor jgrk gS A
Rhizoctonia solani

8. Charcoal rot Macrophominia phaseolina,
Infected seedling show a reddish brown discoloration from the soil line up the stem.
The discolored area changes from reddish brown to dark brown or black.
Infected tissues, when split open, look as if they had been in charcoal dust.

9. Myrothecium roridum

10. Brown leaf spot of soybean
Septoria glycines
Septoria glycines

11. Anthraconose (Colletoricum truncatum)

12. Integrated Management
Use of resistant/tolerant varieites
For yellow mosaic prone areas select –
PK 1241, PK 1189, PK 1162, PK 1158, Brag/ SL 317& 452, SL 443, SL 450 PK 416, SL 427, PKB 25, SL 457, PK 1042, PK 1135.
2. Seed treatment with Thiram + carboxin (37+37%) 2g/kg, carbendazim + thiram (1:1) 3g/kg
Crop rotation – Soybean should be taken only in kharif season and rotate with maize, jowar, pigeonpea
Use proper dose of fertilizer and specially potassium

13. Spray of insecticides like imidaclorprid or thiomethoxam 1ml/litre
Observe the field periodically and rough out the YMV infected plants
Spray of insecticides like imidaclorprid or thiomethoxam 1ml/litre
7. Spray at initiation of disease or at 35 DAS:
Carbendazim % or
Thiophanate methyl % or
Copper oxychloride (COC) % or
Hexaconazole %
Sprays to be repeated after 15 days.