plant disease control

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plant disease control

  1. 1. MIC 319 FUNDAMENTALS OF AGRICULTURAL MICROBIOLOGY CHAPTER 5 PRINCIPLES OF DISEASE CONTROL BY SITI NORAZURA JAMAL 03 006/ 06 483 2132 norazura6775@ns.uitm.edu.my
  2. 2. Outline Principles of disease control 1) Avoidance/Exclusion 2) Eradiation 3) Protection 4) Resistant
  3. 3. 1) Avoidance/Exclusion
  4. 4. Avoidance/Exclusion To prevent the import and spread of plant pathogens into areas from which they are absent 1) Quarantine and Inspection 2) Evasion or avoidance of pathogen 3) Use of pathogen free propagating material
  5. 5. 1) Quarantine and Inspection Regulations controlling the import and export of plants to prevent spread of disease and pest The Agricultural Pests and Noxious Plants (Import/Export) Regulations 1981 govern the import of plants, plants products, insects and microorganisms into Malaysia Each state is responsible for enforcing quarantine regulations to prevent the spread of pests and diseases within the state.
  6. 6. 1) Quarantine and Inspection Inspection of Plants/Insects at Legal Entry Checkpoint. All planting materials, plant product, insects etc which is prohibited materials subjected to inspection at the entry checkpoint and if found infested or diseases shall be treated, quarantine or destroyed Air (KLIA, Subang Airport, Senai Airport) Road (JB, Padang Besar, Chanloon, Rantau Panjang)
  7. 7. 2. Evasion or avoidance of pathogen Grow the plant in the area or environment that unsuitable for the growth of pathogen. Plant a susceptible crop at a great distance from other fields containing possible disease.
  8. 8. 3. Use of pathogen free propagating material Use a pathogen- free seed Growing the crop in an area that Free or isolated from the pathogen Not suitable for the vector of the pathogen
  9. 9. 2) Eradiation
  10. 10. Eradiation To reduce amount of pathogen present in an area, a plant or plant part 1) Host eradication 2) Sanitation 3) Crop rotation
  11. 11. 1) Host eradication Remove or burn all of the infected host plant Remove alternate host for the pathogen
  12. 12. 2) Sanitation Wash hands before handling certain kinds of plant such as tomato Frequently disinfesting knives used to cut propagative stock such as potato tubers
  13. 13. 3) Crop rotation The practice of growing a series of dissimilar types of crops in the same area in sequential seasons Crop rotation also seeks to balance the fertility demands of various crops to avoid excessive depletion of soil nutrients
  14. 14. 3) Protection
  15. 15. Protection Protect the plant directly from any infection that are likely to arrive. 1) Biological control 2) Chemical control
  16. 16. 1) Biological control The process to reduce or control the pest level by using another microorganism Use antagonistic microorganism – microorganism that antagonist to the pathogen The microorganism will destroy and inhibit the growth of pathogen. Environmentally friendly method.
  17. 17. 2) Chemical control Application of chemical compounds that are toxic to the pathogen Inhibit germination, multiplication and growth of the pathogen.
  18. 18. 4) Resistant
  19. 19. Resistant Possessing qualities that hinder the development of a given pathogen Use genetic engineering technique Insert the plants with genes that code for production of enzymes or toxin that could interfere pathogen infection.

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