DISEASE
IN PLANT ORGAN
What is Disease?
 Disease issomething that causes disturbance in plant so plant cannot
make reproduction or dies slowly.
...
Phytopathology
• Plantpathology(alsophytopathology)isthescientificstudyofplant
diseasescausedbyphatogens(infectiousdisease...
BIOTIC AGEN
Thebioticagent (biology)ispathogenicorganism,especiallybacteria,
fungi,virus,parasiticplant,andnematodeworm.Pa...
abiotic agent
Thefollowingsare several factorsconsideredas abioticagent:
1.Extremetemperature, suchas very hotandvery cold...
1. Virus
Viruses are very smallorganisms whose composition is very simple
because it only contains the acid nucleiin the f...
2. Bacteria
A bacterial single-celledprokaryotic microorganisms. There are
about 200 species of bacteria thatcan cause pla...
3. fungi
Fungi reproduce by spores that spread expenditure through the
medium of air, water, and soil. Fungus likesdamp ar...
1. BLIGHT DISEASE OF POTATO LEAF
The first symptoms are the presence of pock on the edges and tip of
the leaf, the pock wi...
pICTURE
BLIGHT DISEASE OF POTATO LEAFPhytophthora infestans
2. CABBAGE WET ROTTEN DISEASE
Shows symptoms those are on its leaf found wet pock of irregular shape.
The pock widens and ...
picture
CABBAGE WET ROTTEN DISEASEErwinia carotovora
3. DISEASE IN CABBAGE POUNDER ROOT
Shows symptoms those areits root gets fission reaction and cell
enlargement. Then forme...
picture
CABBAGE POUNDER ROOTPlasmodiophora brassicae
4. CHILI WITHERED DISEASE
Show symptoms those areyoung leaf is withered followed by
yellowing of oldleaves. If the tip of ...
PICTURE
.CHILI WITHEREDPseudomonas solonacearum
5. VIOLET SPOTS DISEASE IN GARLIC
Shows symptoms those are inits leaf appears small spots, folding of
white colored untilg...
picture
VIOLET SPOTS DISEASE IN GARLICAltenaria porri
6. LEAF ROTTEN DISEASE OF ONION
Shows symptoms those arenear its leaf appears pale green spots. If
condition of surroundin...
picture
LEAF ROTTEN DISEASE OF ONIONPeronospora destructor
7. LEAF SPOTS DISEASE IN ASPARAGUS BRANCH
Shows symptoms those are there arefound enlengthen spot of brown
until grey colo...
picture
LEAF SPOTS DISEASE IN ASPARAGUS
BRANCH
Cercospora asparagi
8. Soft rot disease
Soft rot isa rotting that disease happen at the neck newly grown plant
roots ( during germination ).
T...
PICTURE
Soft root diseasePhythium sp
9. POWDERY MILDEW DISEASE
Thisdisease attacksa growing seed, so the seed becomes spongy and
finallydies. The cause isthe f...
PICTURE
Peronospora parasitica. POWDERY MILDEW DISEASEPeronospora parasitica
10. CVPD DISEASE
The Citrus Vein Phloem Degeneration( CVPD ) disease is adisease that
attacksthe phloem of an orange’s ste...
Thisdisease attacksthe internodes of the stem and grains. It iscaused
by the fungus Pyriculariaoryzae. Thus, the internode...
pICTURE
Tobacco mosaic diseaseTobacco Mosaic Virus
pICTURE
Pyricularia oryzae Disease in rice plants
No. The name of
disease
The name of
microorganism
the parts that is
attacked
The effort
1. BLIGHT DISEASE OF
POTATO LEAF
P...
4. CHILI WITHERED
DISEASE
Pseudomonas
solonacearum
The leaf 1. Decreasing bacteria
population in soil by
covering soil wit...
7. LEAF SPOTS DISEASE IN
ASPARAGUS BRANCH
Cercospora asparagi The branches spraying contact fungicide.
8. Soft rot disease...
1. A plant disease that attacks leaves is ……
a. Powdery mildew disease
b. Soft rot disease
c. Tobacco mosaic disease
d. CV...
2. Blight disease of potato leaf is caused by fungi ……
a. Phytophthora infestans
b. Peronospora parasitica
c. Rhizoctonia ...
3. Shows symptoms of disease in cabbage pounder root is
……
a. The young leaf is withered followed by yellowing
of old leav...
4. To control disease leaf spots disease in asparagus branch
by ……
a. Making plant rotation
b. Burning leaf of harvest rem...
5. Soft root is …..
a. Seed becomes spongy and finally dies
b. A rotting that disease happens at the neck
newly grown plan...
1.
What are the characteristics of disease?
2.
Write down the organism that often causes
plant infected by disease!
3.
Write down the symptom of plant that
infected by disease
1. Blight disease of potato leaf
2. Chili withered disease
3. ...
4.
Write down the effort that can be done to
destroy disease in the violet spots disease in
garlic!
5.
Write down the causes of the following
disease!
1. Cabbage wet rotten disease
2. Leaf rotten disease of onion
3. Leaf s...
Disease in plant
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Disease in plant

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Disease in plant

  1. 1. DISEASE IN PLANT ORGAN
  2. 2. What is Disease?  Disease issomething that causes disturbance in plant so plant cannot make reproduction or dies slowly.  Characteristicof disease are asfollows : 1. The cause of disease ishardly seen by naked eye 2. The cause of disease are microorganism ( virus, bacteria, fungi, or mushroom ) and lackof certain substance in the soil 3. Disease attackcommonly is in indirect so the plant dies slowly
  3. 3. Phytopathology • Plantpathology(alsophytopathology)isthescientificstudyofplant diseasescausedbyphatogens(infectiousdiseases)andenvironmental conditions(physiologicalfactors). • DiseaseinplantcommonlycausebyMicroorganismthat formofvirus, bacteria,andfungi. • Plantdiseasecausesdamage or abnormalityinabsorbingandtransporting food,mineral,water, foodsynthesize,orothermetabolicprocess disturbancethatinfluencetheappearance (quality)andtheyieldof crops( quantity). • Agent thatcausesdiseaseinplantcanbe intheform ofbioticagent and abioticagent.
  4. 4. BIOTIC AGEN Thebioticagent (biology)ispathogenicorganism,especiallybacteria, fungi,virus,parasiticplant,andnematodeworm.Pathogenicorganismcauses diseaseby: 1. Absorbingfoodor cellcontentcontinuouslythatmakesthehostweak. Ex:bacteria,parasiticplant,nematode,virus. 2. Killingcellor causingdamage onmetabolicactivityofhostcellby secretingsubstance,suchas enzymeor toxinintothehostcell.Ex: Phytophthorainfestansfungus,Ustilagomaydis(Thatcausecornseed smut. 3. Disturbingtransportationoffood,mineral,andwateronhostvascular tissue.Ex:Fusariumaxysporum (causewither ontomato’sleaf) 4. Preventingphotosynthesisprocess.
  5. 5. abiotic agent Thefollowingsare several factorsconsideredas abioticagent: 1.Extremetemperature, suchas very hotandvery cold; 2.Toomuchor toolittlewater; 3.Lowor highlightintensity; 4.Insufficientoxygen; 5.Air pollution; 6.Insufficientamountofnutrients; 7.Tooacidor toalkalinesoiland; 8.Poisonouschemicaldrugs,suchas insecticide,fungicide,nematicide, molusicide,andanotherperticide.
  6. 6. 1. Virus Viruses are very smallorganisms whose composition is very simple because it only contains the acid nucleiin the form of RNA and only a few DNA. Properties virus isdifferent from other organisms can be crystallized without the loss of infection.
  7. 7. 2. Bacteria A bacterial single-celledprokaryotic microorganisms. There are about 200 species of bacteria thatcan cause plant diseases. This especially type of rod-shaped bacterium include Agrobacterium, Corynebacterium, Erwinia,Pseudomonas, and Xanthomonas Steptomyces.
  8. 8. 3. fungi Fungi reproduce by spores that spread expenditure through the medium of air, water, and soil. Fungus likesdamp areas and can live to stay another organism. Most of fungi is the enemy of the plant because of the many plants thatdied due to fungi attack.
  9. 9. 1. BLIGHT DISEASE OF POTATO LEAF The first symptoms are the presence of pock on the edges and tip of the leaf, the pock widens and form a brown necrotic areas. pocks surrounded by white sporangium. The development of leaf pock disease is most rapidly occurring at a temperature of 18 ˚ C - 20˚ C. On the air temperature 30˚ C the development of spots hampered. Thisdisease is caused by Phytophthora infestans fungus. The control to the disease isby : 1. Cultivating potato that endures to disease 2.Using healthy potato pest 3.Makingspraying by using fungicide
  10. 10. pICTURE BLIGHT DISEASE OF POTATO LEAFPhytophthora infestans
  11. 11. 2. CABBAGE WET ROTTEN DISEASE Shows symptoms those are on its leaf found wet pock of irregular shape. The pock widens and folding, it has blackish brown colour. Secondary bacteria infectioncausesplantreleasesspecificrottensmell. ThisdiseasecausedbyErwiniacarotovorapv.Carotovorabacteria. Tocontrolthisdiseaseby: 1. Keepingcleanlinessofgardenfromremainofsickplant 2. Keeping humidity of not too high by cultivation cabbage plant with cultivatingdistancenottoodense 3. Always Wash the product by water that contains chlorine or borax of 7.5% 4. Storedinwarehousethathasenoughofventilation
  12. 12. picture CABBAGE WET ROTTEN DISEASEErwinia carotovora
  13. 13. 3. DISEASE IN CABBAGE POUNDER ROOT Shows symptoms those areits root gets fission reaction and cell enlargement. Then formed lumpor irregular gland, the lump unite to be enlengthen swollen likepounder. The leaf becomes grey green and faster withered because its transporter tissue is broken. Thisdisease caused by Plasmodiophora brassicaefungus. To control this diseaseby : 1.Preventing the entering of fungus of disease to the lands that free from fungi infect 2.Seeding in land of pathogenic free 3.Liming
  14. 14. picture CABBAGE POUNDER ROOTPlasmodiophora brassicae
  15. 15. 4. CHILI WITHERED DISEASE Show symptoms those areyoung leaf is withered followed by yellowing of oldleaves. If the tip of stem is cut and pressed, from surrounding of vascularbundles willquit mucilage of grayish color This disease caused byPseudomonas solonacearumbacteria. To control this disease by : 1.Decreasing bacteria population in soil by covering soil with transparent plasticfor one month 2.Making plant rotation 3.Regulating irrigation 4.Chemically by using bactericide also soil sterilization
  16. 16. PICTURE .CHILI WITHEREDPseudomonas solonacearum
  17. 17. 5. VIOLET SPOTS DISEASE IN GARLIC Shows symptoms those are inits leaf appears small spots, folding of white colored untilgrey. If its size enlarges, spots are seen “ringed” and its color rather purplish and surrounded by yellow color. This disease caused by Altenariaporri fungus. To control the disease is done by: 1.Cultivating garlic in land that has good water conduct 2.Making plant rotation 3.Makingfungicide spraying
  18. 18. picture VIOLET SPOTS DISEASE IN GARLICAltenaria porri
  19. 19. 6. LEAF ROTTEN DISEASE OF ONION Shows symptoms those arenear its leaf appears pale green spots. If condition of surrounding is humid, on the leaf develops violet white colored fungus and leafbecomes turn yellow, withered, and dried. This disease caused byPeronospora destructor fungus. To control by : 1.Using healthy seed or free from disease 2.Burning leaf of harvest remain 3.Spraying fungicide
  20. 20. picture LEAF ROTTEN DISEASE OF ONIONPeronospora destructor
  21. 21. 7. LEAF SPOTS DISEASE IN ASPARAGUS BRANCH Shows symptoms those are there arefound enlengthen spot of brown until grey colored with wide edge of reddish brown in its leaf and branch. This disease caused by :Cercospora asparagifungus. To control this disease by spraying contact fungicide.
  22. 22. picture LEAF SPOTS DISEASE IN ASPARAGUS BRANCH Cercospora asparagi
  23. 23. 8. Soft rot disease Soft rot isa rotting that disease happen at the neck newly grown plant roots ( during germination ). This disease iscaused by an infection of the fungi Phythium sp.or Rhizoctonia solani.The neck of the root will become smaller so the root can no longer support the stem. As a result, the new plant will collapse.
  24. 24. PICTURE Soft root diseasePhythium sp
  25. 25. 9. POWDERY MILDEW DISEASE Thisdisease attacksa growing seed, so the seed becomes spongy and finallydies. The cause isthe fungi Peronospora parasitica.This fungus sometimes also attacksseeds that already have their first leaves. The plant becomes short with blackspots on the leaves, which lead to decreased production.
  26. 26. PICTURE Peronospora parasitica. POWDERY MILDEW DISEASEPeronospora parasitica
  27. 27. 10. CVPD DISEASE The Citrus Vein Phloem Degeneration( CVPD ) disease is adisease that attacksthe phloem of an orange’s stem. The symptoms are that the leaf buds become small, and turn yellow so they become yellow colored fruit. This disease is caused by bacteria. CVPD Disease
  28. 28. Thisdisease attacksthe internodes of the stem and grains. It iscaused by the fungus Pyriculariaoryzae. Thus, the internodes of the stem are easily broken and crops finallydie. Tobacco Mosaic Virus ( TMV ) virus causes white spots on tobacco’ leaves which lead to decrease in the quality of the leaves 12. Tobacco mosaic disease 11. Disease in rice plants
  29. 29. pICTURE Tobacco mosaic diseaseTobacco Mosaic Virus
  30. 30. pICTURE Pyricularia oryzae Disease in rice plants
  31. 31. No. The name of disease The name of microorganism the parts that is attacked The effort 1. BLIGHT DISEASE OF POTATO LEAF Phytophthora infestans The leaf 1. Cultivating potato that endures to disease 2. Using healthy potato pest 3. Making spraying by using fungicide 2. CABBAGE WET ROTTEN DISEASE Erwinia carotovora pv. Carotovora bacteria. The root 1. Keeping cleanliness of garden from remain of sick plant 2. Keeping humidity of not too high by cultivation cabbage plant with cultivating distance not too dense 3. Always Wash the product by water that contains chlorine or borax of 7.5% 4. Stored in warehouse that has enough of ventilation 3. DISEASE IN CABBAGE POUNDER ROOT Plasmodiophora brassicae The root 1. Preventing the entering of fungus of disease to the lands that free from fungi infect 2. Seeding in land of pathogenic free 3. Liming
  32. 32. 4. CHILI WITHERED DISEASE Pseudomonas solonacearum The leaf 1. Decreasing bacteria population in soil by covering soil with transparent plastic for one month 2. Making plant rotation 3. Regulating irrigation 4. Chemically by using bactericide also soil sterilization 5. VIOLET SPOTS DISEASE IN GARLIC Altenaria porri The leaf 1. Cultivating garlic in land that has good water conduct 2. Making plant rotation 3. Making fungicide spraying 6. LEAF ROTTEN DISEASE OF ONION Peronospora destructor The leaf 1. Using healthy seed or free from disease 2. Burning leaf of harvest remain 3. Spraying fungicide
  33. 33. 7. LEAF SPOTS DISEASE IN ASPARAGUS BRANCH Cercospora asparagi The branches spraying contact fungicide. 8. Soft rot disease Phythium sp. or Rhizoctonia solani. The root 9. POWDERY MILDEW DISEASE Peronospora parasitica. Growing seed 10. CVPD DISEASE bacteria phloem 11. Disease in rice plants Pyricularia oryzae the stem and grains 12. Tobacco mosaic disease virus The leaf
  34. 34. 1. A plant disease that attacks leaves is …… a. Powdery mildew disease b. Soft rot disease c. Tobacco mosaic disease d. CVPD disease
  35. 35. 2. Blight disease of potato leaf is caused by fungi …… a. Phytophthora infestans b. Peronospora parasitica c. Rhizoctonia solani d. Pyriculuria oryzae
  36. 36. 3. Shows symptoms of disease in cabbage pounder root is …… a. The young leaf is withered followed by yellowing of old leaves b. Near its leaf appears pale green spots c. Root gets fision reaction and cell enlargement d. In its leaf appears small spots
  37. 37. 4. To control disease leaf spots disease in asparagus branch by …… a. Making plant rotation b. Burning leaf of harvest remain c. Chemically by using bactericide also soil sterilization d. Spraying contact fungicide
  38. 38. 5. Soft root is ….. a. Seed becomes spongy and finally dies b. A rotting that disease happens at the neck newly grown plant roots (during germination) c. Citrus vein phloem degeneration d. Tobacco mosaic virus
  39. 39. 1. What are the characteristics of disease?
  40. 40. 2. Write down the organism that often causes plant infected by disease!
  41. 41. 3. Write down the symptom of plant that infected by disease 1. Blight disease of potato leaf 2. Chili withered disease 3. Violet spots disease in garlic
  42. 42. 4. Write down the effort that can be done to destroy disease in the violet spots disease in garlic!
  43. 43. 5. Write down the causes of the following disease! 1. Cabbage wet rotten disease 2. Leaf rotten disease of onion 3. Leaf spots disease in asparagus branch

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