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Diseases of Soybean

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

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Diseases of Soybean

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

  2. ;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 Yellow mosaic (ihyk ekstsd

  3. Symptoms of YMV Yellow specks on young leaves Irregular yellow & green patches & sight puckering & reduced leaf size

  4. Characteristic of MYMV

  5. Yield loss due to YMV

  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. 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 Rhizoctonia areal blight (jkbtksDVksfu;k vaxekjh

  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 (Colletoricumtruncatum)

  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 3. Crop rotation – Soybean should be taken only in kharif season and rotate with maize, jowar, pigeonpea 4. Use proper dose of fertilizer and specially potassium

  13. 5. 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 50 WP @ -.05 % or • Thiophanate methyl 70 WP @ 0.05 % or • Copper oxychloride (COC) 50 WP @ 0.2 % or • Hexaconazole 5 EC @ 0.1 % Sprays to be repeated after 15 days.

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