DISEASES OF FIELD & HORTICULTURAL CROPS
& THEIR MANAGEMENT-I
Topic- IDM of Bacterial Diseases Submitted To- Dr. Aravind T
Submitted By-Abhishek Achary Redg No.-200804130248 Sec-E
❖ SOME IMPORTANT BACTERIAL DISEASES
❖ RESISTANT VARIETIES
❖ CULTURAL METHODS
❖ PHYSICAL METHODS
❖ MECHANICAL METHODS
❖ BIOCONTROL METHODS
❖ CHEMICAL METHODS
❖ CONCLUSION
❖ REFERENCE
CONTENT
IDM programme implies all the available disease management
approaches including cultural,
biological and chemical control with the main objective to keep the
disease incidence below economic
threshold level.
SOME IMPORTANT BACTERIAL DISEASES
DISEASE CAUSAL ORGANISM
BACTERIAL LEAF BLIGHT
BACTERIAL LEAF STREAK Xanthomonas oryzae pv. oryzae Xanthomonas campestris pv. oryzicola
BACTERIAL PUSTULES/SPOTS Xanthomonas axonopodis pv. glycines BACTERIAL WILT / MOKO Pseudomonas solanacearum /
Burkholderia solanacearum
BACTERIAL LEAF SPOT Xanthomonas axonopodis pv. punicae BACTERIAL WILT /SOUTHERN
BACTERIAL WILT Ralstonia solanacearum
BACTERIAL BLIGHT OF BEAN Xanthomonas campestris pv. phaseoli CROP NAME
RICE
SOYBEAN BANANA POMEGRANATE TOMATO & BRINJAL
BEANS
RESISTANT VARIETIES
DISEASE RESISTANT VARIETIES
BACTERIAL BLIGHT TKM-6,Ratna,Improved lalat,Improved Tapaswini BACTERIAL LEAF STREAK IR 20, Krishna & Jagannath
BACTERIAL PUSTULES/SPOTS TGX1987-62F & TGX1990-15F
BACTERIAL WILT / MOKO Poovan and Monthan
BACTERIAL LEAF SPOT Daru-18 & IIHR-30
BACTERIAL WILT /SOUTHERN BACTERIAL WILT Pant Samrat,Arka Nidhi,Arkas Kashav,Arka Neelakantha,Surya And BB 1,44 & 49
A.CULTURAL METHODS
1 )USING CERTIFIED SEED
2)SEED CLEANING 3)CROP ROTATION 4)FIELD SANITATION
5) SELECT THE DISEASE FREE PROPAGATION MATERIALS 6) ERADICATION OF INFECTED PLANTS OR PLANT PARTS 7) VECTOR CONTROL
8) DEEP SUMMER PLOUGHING
B. PHYSICAL METHODS
1
)Hot water treatment
: When the pathogen is inside the seed coat and in the embryo, such treatments areineffective. Not usually control bacterial diseases because of the relatively high thermal death point of the bacteria, but treatment at 52°C for 20 minutes - reduces the number of infected seeds.
• cotton seed at 56 °C for 10 minutes for bacterial blight of cotton.
• BLB of rice (xanthomonas oryzae) at 53 °C for 12hrs .
2
)
Soil Solarization: Soil solarization is a method of soil- disinfestation based on its solar heating by mulching a soil with a transparent polyethylene during the hot seasonSoil solarization is generally used for controlling soil-borne pathogens like Pythium, Verticillium, Rhizoctonia,
Fusarium etc 3) Rabbing
C. MECHANICAL METHODS
• Clipping: Avoid clipping of seedlings - BLB by xanthomonas oryzae pv oryzae in rice .
• Traning and pruning
D. BIOCONTROL METHODS
Bacterial Antagonists Pseudomonas fluorescence, Bacillus subtilis
Example:Soft rot pathogen of potato (Erwinia carotovora subsp.atroseptica) - Pseudomonas fluorescens F113 – DAPG(Synthetic 2,4-
diacetylphloroglucinol)
Application Methods
1. Seed Treatment - 5-10g per Kg 2. Foliar Spray - 20g per L
3. Root Dip - 20g per L
4. Soil Application – P.fluorescence 2.5 kg/ha
E.CHEMICAL METHODS
Antibiotics – 100 to 300 ppm (0.1- 0.3g per L) a)Streptomycin
b)Streptocyclin - seed treatment with streptocycline @ 0.01 %. or spray streptocycline @ 0.01 % and copper oxychloride @ 0.3% for bacterial blight
c)Tetracyclin (Against Phytoplasma)
Plant pathogenic bacteria can be difficult to kill when protected inside the plant. To protect
healthy plants, you can manipulate environmental conditions, remove infected plants, or apply
protectant pesticides. Several foliar diseases can be caused by bacteria. Good sanitation practices are especially important to prevent problems,
because a single infected seed can result in an entire tray — or even an entire greenhouse — of diseased plants.
CONCLUSION
REFERENCES
• Abdallaha,M.E., Harounb,S.E., Gomahc, .A.A, El-Naggard ,N.E.
and Badrc, H.H. 2013. Application of actinomycetes as biocontrol agents in the management of onion bacterial rot diseases.
Archives of Phytopathology and Plant Protection, 15:1797–1808.
• Thind B.S. 2013. Phytobacteriology and its changing scenario.
Indian phytopathology, 66:229-236.
• Maloy, O.C. 2005. Plant Disease Management. The Plant Health Instructor. DOI: 10.1094/PHI-I-2005-0202-01
Book reference :
• Agrios 2005 . plant pathology 5th ed .Elsiver inc . 615-703
• R.P singh 2013 plant pathology 2nd ed. Kalyani publishers. 234- 244 and 268-285.
• Kalyan k.mondel 2015 . plant bacteriology .Kalyani publishers 124-144
Online reference :
• http://agriinfo.in/?page=topic&superid=5&topicid=1847
• http://www.omafra.gov.on.ca/english/crops/facts/05-069.htm
