ICAR ARS 2024-2025 (PRE.ONLY) (ICAR ARS 08. PLANT PATHOLOGY 2024)

3.8 (112)

Select Buying Options:

0

Buy Now and Pay Later in EMI's

Eligibility

Master’s degree in Agriculture/ Botany/ Life Sciences/ Plant Protection with specialization in Plant Pathology/Mycology

Exam Pattern

Two separate competitive written examinations (Computer Based Test + Written) followed by Viva-voce shall be conducted as per the following plan of examinations:-
Examination               Max. Marks    Duration
Preliminary-ARS         150                  2 hours (Objective Type)
ARS – Main                 240                 3 hours  (Descriptive Type)
Viva-voce                   60              1/3 marks will be deducted for each wrong answer in ARS-2021 (Preliminary)

Examination (Objective Type). There will be no rounding off of fractions of marks. This is a qualifying examination and marks scored will not be counted for final selection. ARS-2021 (Mains) Examination Paper will have only one paper of 240 marks in therespective disciplines, to be attempted in 3 hours duration. The paper shall be divided in three parts A, B and C. Part ‘A’ will consist of 40 (forty) questions of 2 (two) marks each. In this 30 part, answers required will be of very short, not exceeding 10 (Ten) words at the most. Part ‘B’ will have 20 (twenty) questions of 5 (five) marks each requiring one or two paragraphs and/or graphic explanation. Part ‘C’ will have 6 (six) essay type or descriptive type questions. Each question will carry 10 (ten) marks and may have two or more parts. Answers are required to be written in the space provided below the question. In no case extra sheets will be provided. All questions in parts ‘A’ ‘B’ and ‘C’ will be compulsory.

Syllabus

Unit 1: History and Principles of Plant Pathology

Milestones in phytopathology with particular reference to India. Major epidemics and their social impacts. Historical developments of chemicals, legislative, cultural and biological protection measures including classification of plant diseases. Physiologic specialization, Koch’s postulates. Growth, reproduction, survival and dispersal of plant pathogens. Factors influencing infection, colonization and development of symptoms.

Unit 2: Laboratory and Analytical Techniques

Preparation and sterilization of common media. Methods of isolation of pathogens and their identification. Preservation of microorganisms in pure culture. Methods of inoculation. Measurement of plant disease. Molecular detection of pathogens in seeds and other planting materials: Nucleic acid probes, Southern, Northern and Western hybridization, ELISA, ISEM and PCR. Laboratory equipment and their use: autoclave, hot air oven, laminar flow, spectrophotometer, electrophoresis, light and electron microscopy, incubator, ultracentrifuge, ELISA Reader.

Unit 3: Physiological and Molecular Plant Pathology

Altered metabolism of plants under biotic and abiotic stresses. Molecular mechanisms of pathogenesis: recognition phenomenon, penetration, invasion, primary disease determinant. Enzymes and toxins in relation to plant disease. Mechanisms of resistance. Phytoalexins. PR proteins. Antiviral proteins. SAR. HR and active oxygen radicals. Tissue culture. Somoclonal variation and somatic hybridization. Elementary genetic engineering. Management of pathogens through satellite, antisense - RNA. Ribozymes, coat protein, hypovirulence cross protection/useful genes and promoter technology biosafety and bioethics.

Unit 4: Mycology

Classification of fungi. Economic mycology, edible fungi and entomogenous fungi. Mycorrhizal associations. Cell organelles, their morphology, functions and chemical composition.

Unit 5: Plant Bacteriology

Identification and classification of bacteria, morphology, ultrastructure and chemical composition of prokaryotic cell in relation to function. Growth curve, nutrition and auxotrophic mutants. Resting cells in prokaryotic, elementary bacterial genetics and variability: transformation, conjugation, transduction. Biology of extra chromosomal elements: plasmid borne genes and their expression: avr, her, vie and pat genes. Bacteriophages: lytic and lysogenic cycles. Prokaryotic inhibitors and their mode of action. Economic uses of prokaryotes. Morphology, biochemical characteristics, reproduction and life cycle of phytoplasma and other fastidious prokaryotes.

Unit 6: Plant Virology

Nature, composition and architecture of viruses and viroids. Properties of viruses. Variability in viruses. Satellite viruses and satellite RNA. Assay of plant viruses including biological, physical, chemical, serological and molecular methods. Conventional and biotechnological techniques used in detection and diagnosis. Behaviour of viruses in plants including infection, replication and movement. Histopathological changes induced by viruses in plants, inclusion bodies.Transmission of viruses: virus - vector relationships. Nomenclature and classification of viruses.

Unit 7: Plant Disease Epidemiology

Concepts in epidemiology. Development of disease in plant population. Monocyclic and polycyclic pathogens. Role of environment and meteorological factors in the development of plant disease epidemics. Survey, surveillance (including through remote sensing), and prediction and forecasting of diseases. Epidemic analysis and prediction models. Crop loss assessment: critical and multiple point models.

Unit 8: Phanerogamic parasites and Non-parasitic Diseases

Diseases caused by Phanerogamic parasites and their management. Diseases due to unfavourable soil environment, drought and flooding stress etc. Nutritional deficiencies. Primary /secondary air pollutants and acid rain.

Unit 9: Fungal Diseases of Crop Plants

Fungal diseases of cereals, millets, oilseeds, pulses, fruits, vegetables, plantation, fiber, spices and ornamental crops with special reference to etiology, disease cycle, perpatuation, epidemiology and management. Post harvest diseases in transit and storage; aflatoxins and their integrated management.

Unit 10: Bacterial and Viral Diseases of Crop Plants

Crop diseases of cereals, pulses, oilseeds, vegetables, fruits, plantation and fiber crops caused by bacteria, viruses, viroids, phytoplasmas and other fastidious prokaryotes. Mode of transmission and pathogen vector relationships. Epidemiology and management.

Unit 11: Management of Plant diseases

General principles of plant quarantine. Exotic pathogens and pathogens introduced into India. Sanitary and phytosanitary issues under WTO, TRIPS and PRA. Genetic basis of disease resistance and pathogenicity: gene for gene hyphothesis; parasite mediated frequency -dependent selection concept of QTL mapping; breeding for disease resistance. Production of disease free seeds and planting materials. Seed certification. Chemical nature and classification of fungicides and antibiotics: their bioassy and compatibility with other agricultural chemicals; resistance to fungicides/ antibiotics; effect on environment. Spraying and dusting equipments, their care and maintenances. Important cultural practices and their role in disease management, solarization, integrated disease management. Microorganisms antagonistic to plant pathogens in soil, rhizosphere and phyllosphere and their use in the control of plant diseases; soil fungistasis. Plant growth promoting Rhizobacteria.

Student's Feedback

(4)

I find its excellent. I appreciate publishing enriching students' knowledge for them to stand out in any competitive exam.

Ashish Singh

(4)

Very informative and course oriented, which benefits all students and those preparing for competitive exams.

Shailesh Kumar

(3)

Best material to inspire many young people who are trying their hardest in competitive exams.

Ajay Mehra

(4)

I've been searching for something like this for a long time. They stand out among others. The author appears to have done extensive research. Students and parents should buy it. It's worth reading.

Satish Kumar

(5)

I've been finding it hard to improve my learning style to use my study time best. There content is exceptionally well written and researched to provide tools and realistic approaches I can now use for the rest of my life. It was fantastic!

Sourav Sinha

(4)

very nice

KAVITA ADHIKARI

(1)

KUSHAL H R

(4)

Sumit Jain

(4)

Pandhiri Kruparani

(3)

ADARSHA B S

(2)

MALLAMMA

(4)

SANKARA ANUSHA

(5)

Mohit Shalikram Janbandhu

(3)

SAKLAIN MUSTHAQ

(4)

Dhanushree HK

(1)

Alok Sahu

(4)

Guptnath Trivedi

(5)

Prafulla Kumar Paul

(4)

Dola sireesha Vanaparthi

(3)

J M KAVANA
Payment Methods