Department of Plant Pathology

The Post graduate department of Plant Pathology, RAU, Pusa under the university was established in the year, 1970 with intake capacity of six students in Master degree programme and two students under Ph. D. Programme.

THRUST AREAS 

  • Survey & Surveillance of important diseases of major crops and important medicinal and aromatic plant – Tulsi, Satawar, Pipali, Mandukparni etc. for development of disease MAP under climatic change.
  • Development of weather based forecasting module for important diseases of major crops.
  • Exploration on native bio-agent and botanical products for promotion of plant health.
  • Development of biotechnological toll for study of variability in plant pathogens and development of transgenic plants for disease resistance.
  • Development of IDM module for important disease of major crops, medicinal & aromatic plants.
  • Development of IDM Module in vegetable, fruits & flowers under protected cultivation.

RESEARCH PROJECTS – ONGOING

  • AICRP on Rice
  • AICRP on Tropical Fruits
  • AICRP on Pulses (Pigeonpea)
  • AICRP on MAP & Betelvine
  • AICRP on Sugarcane
  • AICRP on Maize
  • AICRP on Mustard
  • AICRP on MullaRp
  • AICRP on Sunflower
  • AICRP on Spices
  • AICRP on Soyabean
  • Assessment of the variability spectrum of Helminthosporium oryzae isolates and their holistic management.  (Non-plan project)
  • Utilization of qualitative diversity of Trichoderma for management of soil borne pathogens of major vegetable crops in Bihar. (Non-plan project)
  • Field evaluation of Thifluzamide 24% SC on paddy crop (for M/s Insecticides India Ltd.)

LATEST RECOMMENDATION IN DISEASE MANAGEMENT

Management of Brown Leaf Spot of Rice (Drechslera oryzae)

  • Use moderately resistant varieties e.g. IR36, Rajendra Bhagwati, Dhanlaxmi, Prabhat, Rajshree
  • Seed treatment with Carbendazim 50 WP@2g/kg
  • Spray Mancozeb @2.5g/Lit or Hexacanazole @ 2 ml/Lit just after appearance of initial symptom.
  • Apply balanced doses of NPK fertilizers.

Management of Sheath Rot of Rice (Sarocladium oryzae):

  • Seed treatment with Carbendazim 50 WP@2g/kg of seed.
  • Spraying of Carbendazim @ 1 gm/Lit or Mancozeb @ 2 g/Lit at boot leaf stage and 15 days later.
  • Adopt optimum spacing, avoid excess nitrogen.

Management of Bacterial Leaf Blight of Rice (Xanthomonas oryzae pv. oryzae)

  • Grow moderately resistant varieties like Ajaya, IR64, Saket-4, Rajshree, Prabhat, Rajendra Bhagwati etc.
  • Spraying of mixture of Agrimycin 100 and Blitox-50/Fytolan can significantly reduce the disease in field.
  • 60-80 kg N/ha with required potassium may be recommended in endemic areas.

Management of Leaf Blight of Maize (Helminthosporium maydis)

  • Use tolerant varieties viz; Shaktiman-1,2,3 & 4, Suwan, Ganga Safed -2, Deccan, Ganga-4, Ganga-5,Kisan and Jawahar.
  • Seed treatment with Captan or Thiram @ 2.5gm/ kg seed.
  • Spray Dithane Z-78 @ 2.5 kg/ ha in 1000-1200 liters of water, as soon as first symptoms of disease appear in the field.

Management of Wilt of Chickpea (Fusarium oxysporum f. sp. ciceri)

  • Treat seed with Bavistin + Thiram (1:2) or Carboxin + Thiram (1:2) @ 3.0 g/kg seed.
  • Grow improved varieties- G-114, Awardhi, Gaurav, Udai.
Management of Panama wilt (Fusarium oxysporum f.sp. cubense ) of banana
The treatment involving disease-free suckers from a disease-free field + dipping in carbendazim (0.2%) for 45 minutes followed by carbendazim drenching (0.2%) and carbendazim injection @ 3 ml of 2% solution during the 3rd, 5th and 7th month after planting (MAP) was found to be effective (wilt incidence of 6% as against 80.33% in control) in reducing wilt incidence.However, bio-control agents i.e. Trichoderma viride (@ 10g/sucker three times) used as soil application also found highly effective and causes marked suppression of Panama wilt so may be included in integrated crop management (ICM)/ integrated diseases management (IDM) schedule in strict organic system.
Panama-wilt-1 Panama-wilt-2
  Integrated management of citrus canker (Xanthomonas axonopodis citri)
 The most effective treatment for management of citrus canker was combined application of Copper oxychloride (CoC) @ 3g per litre+ Streptocycline @ 0.3 g per litre which showed least lesion/leaf i.e.8.20 lesion/leaf. This was followed by spraying of Copper oxychloride (CoC)@3g per litre showing 15.75 lesions per leaf which was statistically at par with treatment of 2% Neem seed kernel extract as spray which exhibited 18.75 lesions per leaf.  Citrus canker
  Integrated management of papaya ring spot virus
Raising of papaya seedlings under Nylon net (40-60 mesh) and spraying of Acephate 1.5g per litre, 3 days before planting+ spraying of Urea @ 10g/liter + Zinc sulphate @1.5g + Boron @ 1.0g per litre before flower initiation stage was found to significantly suppress the incidence of PRSV at the early stage of plant growth.  The treatment was found to have significant effect on increasing fruit yield (50.8Kg/plant) as compared to untreated control (27.0kg/plant).
Papaya-ring-spot-virus-2 Papaya-ring-spot-virus-1

Management of Phytophthora  foot and leaf rot of betelvine

  1. Sanitation of Bareja
  2. Drenching of Bordeaux Mixture (1%) after onset of Monsoon followed by soil application of bio-agent –Trichoderma viride incubated in MOC(5kg TV/500kg/.ha) and one more drenching of Bordeaux Mixture (1%) after 60 days of 1st drenching

Management of Crown Gall of Coriander

  • Seed treatment with  Pseudomonas talc formulation @ 0.40% followed by its foliar spray @40% at 45, 60 & 75 day after sowing can be recommended to manage stem gall disease of coriander caused by Protomyces macrospours.
  • Alternatively, seed treatment with Hexaconazole @0.20% followed by its foliar spray @0.20% at 45, 60 & 75 day after sowing can be recommended to manage stem gall disease of coriander caused by Protomyces macrosporus.
Crown-gall-1 Crown-gall-2 Crown-gall-3
Management of Alternaria  blight  of mustard: Seed treatment with Propiconazole @ 0.1% followed by its foliar spray @0.1% at flower initiation stage can be recommended to manage Alternaria blight (Alternaria brassicae) disease of mustard. Alternaria-blight
Name Designation Specialization Mobile No. Email ID
Dr.(Mrs) Bimla Rai Univ. Prof. & Chairperson Rice Pathology 9934271632 bimlarau@gmail.com
Dr. R. C. Rai Univ. Prof. Seed Pathology 7779956547 rcrai_1955@yahoo.com
Dr. J. P. Upadhayay Univ. Prof. Pulse Pathology 9430046932 jpupadhyayrau@rediffmail.com
Dr. S. K. Singh Assoc. Prof. Fruit Pathology 9431883416 sksraupusa@gmail.com
Dr. Dayaram Univ. Prof. Mushroom 9430464088 raudayaram@gmail.com
Dr. B. Kumar Assoc. Prof. Virology 9431686189 birendrarau@gmail.com
Dr.P.K.Jha Assoc. Prof. Med. & Aromatic Plant path. 9835492378 pkjharau@gmail.com
Dr. Phoolchand Asstt. Prof. Sunflower path. 9661450698 phoolchand1964@gmail.com
Dr. Minatullah Asstt. Prof. Sugarcane path. 9471644421 minat.pusa@gmail.com
Dr. Sangita Sahni Asstt. Prof. Pulse path. 8051099287 sangitampp@gmail.com
Dr. Dinesh Rai Asstt. Prof. Bio. Control, Mycology  7091855455  drai1975@gmail.com
Dr. A. K. Mishra Asstt. Prof. Spice path. 9973218436 ashim_sigatoka@yahoo.com
Sri R. K. Ranjan Asstt. Prof. Bacteriology