a power point presentation on plant disease

8/11/2019 A POWER POINT PRESENTATION ON PLANT DISEASE

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WELCOME


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POWER POINT PRESENTATION


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BADHIRIYA B.Ed TRAINING COLLEGEVELICHIKKALA

SUBMITTED BY

ANJU.S

REGISTER NO:13392001

NATURAL SCIENCE


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PLANT DISEASES


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Fungi, viruses and bacteria were known tillrecently amongst the microorganisms thatcause plant diseases. Diseased plants aredistinguished by changes in their morphological

structure or physiological process, which arebrought by unfavourable environment orparasitic agencies.

INTRODUCTION


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Different types of plant diseases

1. Little leaf of Brinjal.2. Blast disease of Paddy.3. Quick wilt of Pepper.4. Leaf mosaic diseases of Tapioca.5. Sigatoka leaf spot of Banana .


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LITTLE LEAF OF BRINJAL


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Causative organism :-

The disease is caused by virus.Symptoms :-The very short leaves produced on the attached

plants. The petiole become very much reducedand the leaves appear very close to the branchesand stem.

Controlling measures :-For controlling this disease, we sprayed neemkernal suspension.


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BLAST DISEASE OF PADDY


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Causative organism :-The disease is caused by bacteria.

Symptoms :-The dark brown isolate, oval to eye shapedlesions on the upper surface of the leaves.

Controlling measures :-For controlling this disease, we sprayedcowdung solution.


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QUICK WILT OF PEPPER


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Causative organism :-

The disease is caused by phytophthorapalmivora.

Symptoms :-

The leaf may fall and later often the entirebranch may detach and fall.

Controlling measures :-

For controlling this disease, we sprayedtobacco decoction.


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LEAF MOSAIC DISEASE OF TAPIOCA


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Causative organism:-

The disease is caused by tapioca mosaic virusSymptoms :-

This disease is characterised by a mosaic

pattern on leaves with light green, yellow orwhite spots or patches on the green backgroundof the leaves.

Controlling measures :-For controlling this disease, we sprayedTobacco decoction.


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SIGATOKA LEAF SPOT OF BANANA


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CONCLUSION

Diseased plants are distinguished by change sin theirmorphological structures or physiological process , whichare brought about by unfavorable environment or by

parasitic agencies. In other words, plant disease is apathological state, characterized by the physiologicalmalfunctioning and the consequent morphological andanatomical abnormalities of plants, adversely affectingtheir growth, health, reproduction, longevity andeconomic value. It usually result from continuousirritation of plants.


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THE END


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TH NK YOU

a power point presentation on plant disease

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