SEMINAR ON PLANT PATHOLOGY

A Plant to Cure, A Life to Gain:

Empowering Agriculture, Economics and Society

throughPlant Pathology

STC GROUP # 2

LSPU-SPCCPHILIPPINES01.18.2012

OBJECTIVESProvide adequate information about

plant diseases and their general control measures

Discuss to LSPU students the concept of Plant Pathology

At the end of the seminar, the participants should be able to:

Understand the different diseases that occur in plants

Apply the general principles of control measures to treat plant diseases

PLANT PATHOLOGY

Plant pathology (also known as phytopathology) is the scientific study of plant diseases cause by pathogen and environmental conditions.

Miles Joseph Berkeley (1 April 1803 – 30 July 1889) was

an English cryptogamist and clergyman, and one of the

founders of the science of plant pathology.

BRIEF HISTORICAL ACCOUNT OF PLANT PATHOLOGY

For the past 50 years, the ability to combat plant diseases through the use of modern farm management methods, fertilization of crops, and pest control have made it possible.

SYMPTOMS OF PLANT DISEASES

Colour Change. Hypoplasia. Blight Burnt Appearance.Leaf Spots.Wilts.

Blight Burnt Appearance

Bacterial Leaf Spots Fungal Leaf Spots

Verticillium Wilt of cucumber caused by Verticillium dahliae.

GENERAL CONTROL MEASURES OF PLANT DISEASES:

PHYSICAL CONTROL METHODS

Quarantine regulations. Field sanitation.

Disease Name

Symptoms Prevention and

Treatment

Blast of Paddy (Rice)

Rice blast

The disease is first seen as elliptical gray-white

lesions.

Destruction of diseased

crop residue.

Red Rot of Sugarcane

First appears as red bright lesions with

ash grey.

Crop rotation.

“SYMPTOMS CAUSATIVE ORGANISMS AND CONTROL OF THE FOLLOWING DISEASES”

SYMPTOMS CAUSATIVE ORGANISMS AND CONTROL OF THE FOLLOWING DISEASES

BLAST OF PADDY RICE

-Other Names-Panicle blast, Rotten neck

-Causative Agent/ Organism-Pyricularia grisea

-Synonyms-Magnaporthe grisea -Crops Affected-

Rice and some other grasses

RED ROT OF SUGARCANE

-Crops Affected-Sugarcane

-Description of the Agent-Red rot of sugarcane is

caused by a fungus: Colletotrichum falcatum, has its perfect stage as Physalossora

tucumanensis Speg.

Grain Smut of Sorghu

m

Infected grain has greenish

smut balls with a velvety

appearance.

Use of diseased-

free seeds.

Citrus Canker

The disease can appear anywhere

on the exposed

surface of the plant.

Early spraying with

copper compounds.

GRAIN SMUT OF SORGHUM

Causative Agent/ Organismfungus

Crops AffectedCorn, rice, sorghum, wheat,

sugarcane, and other grasses  

CITRUS CANKER

Other NamesAsiatic citrus canker or cancrosis

A, Causative Agent/ Organism

Xanthomonas axonopodispv.citriSynonyms

Bacillus campestris Crops AffectedCitrus crops:grapefruit;

lemon; lime; trifoliate orange.

GROUP MEMBERS

Joemark SupanganJeanny Rose Matanguihan

Agnes HernandezMa. Kristine De Mesa

Odessa Morada

ReferencesEncyclopedia of KnowledgeTextbook: Plant Pathology

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