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AGR 154PLANT PATHOLOGY

•Yahustazi Chik, B.Sc (Hons.) Plantation Technology and

Management (UiTM, 2008), Dip. In Planting Industry and Management (DPIM) (Samarahan)2006.•Room: Bilik Pensyarah 2•Phone No: 013-3555958•Lecture: Bilik Kuliah 4•Laboratory: Bilik Kuliah 4

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Code : AGR 154

Course : Plant Pathology

Level : Diploma

Credit unit : 3

Contact Hours : 4

Part : 02

Course status : Core

Pre-requisite : AGR122

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Course Objectives: 1. To provide students with the basic

symptoms of major plant diseases in selected crops.

2. To introduce students with the major fungicide groups and the basic control measures and strategies of major plant diseases.

3. To provide students with the basic concepts of plant disease development and the pathogens associated with the diseases.

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Course Description:

This subject provides students with: 1.Basic concepts of plant disease

development, 2.Common disease symptoms and some

simple classification of phytopathogens.3. Some exposure to field identification of

plant diseases are emphasized in this course.

4.The students are also introduced to some basic groups of fungicides and the

5.Basic control measures and strategies of major plant diseases.

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Syllabus Contents

1. Introduction 1. General concepts of plant pathology.2. History of plant pathology.3. Characteristics of phytopathogens4. Concepts and characteristics of plant

diseases.

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Syllabus Contents

2. Plant Disease Development

1. Chlorotic symptoms 2. Necrosis3. Hypoplasia, hypotrophy4. Hyperplasia, hypertrophy5. Wilting

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Cont..3. Factors Affecting Plant Diseases

1. Abiotic: soil; climatic; other physical factors 2. Biotic: eg. insects, nematodes, mites,

plants such as algae, fungus, bacteria and virus

4. Classification of Phytopathogens1. Classification and major characteristics of

pathogens: algae, fungus, bacteria, virus, nematodes and mycoplasma.

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Cont…

5. Parasitism and Disease Developmenta. Definition and terminology

i. Infectious disease and Non-infectious diseaseii. Parasites, parasitism, pathogen, pathogenicityiii. Obligate, non-obligate parasites and facultative

saprophytes

b. Plant disease trianglec. Koch’s Postulatesd. Penetration – how pathogens penetrate plant

cellse. Disease cycle and infection cycle

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Cont…

6. Inoculum 1. Sources of inoculum: primary and secondary2. Dissemination : wind, water, insects, animals

and man

7. Pathogenesis1. Predisposition factors : age, environment

8. Epidemiology

1. Epidemic, endemic and sporadic.2. Factors influencing epidemic

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Cont…

9. Disease Management

A. Prophylactic approacha. Quarantine, eradicationb. Prevention

i. treatment of planting materials;ii. disease free planting materials

B. Host plant resistance: vertical and horizontal resistance

C. Integrated Disease Management

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Cont..

10. Common Diseases of Major Crops

• Common diseases of major crops such as oil palm, rubber, rice, cocoa and coconut, fruit trees, vegetables and field crops.

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Teaching Methodology

• Lectures• Laboratory exercise- Media preparation - common disease symptoms- slide observation of common pathogens- Koch’s postulate exercise• Field observation- visits to the nearest agricultural research

institutions

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• Tests : 30%• Laboratory : 10%• Quiz/ Assignment : 10%• Final : 50%

Assessment

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Recommended Texts

1. Agrios, G.N. (1997). Plant Pathology, 4th Edition. Academic Press, New York. 633 pp.

2. Dickinson, C.H. and J.A. Lucas (1989). (Patologi Tumbuhan dan Patogen Tumbuhan. Terjemahan Baharudin Salleh dan Hasnah Jais). Penerbit Universiti Sains Malaysia, Pulau Pinang.