Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.
Prepared by Mark Bell, Mark Henderson and
Frank Zalom with input from
Ehsan Ehsanullah
and Tom Brown
Course objectives
 Know key points in the application and safe use of
pesticides
 Note: At the end, participants will ta...
Course structure
Pesticides
Defining
pests
Defining
pesticides
Do I need
to spray?
About
equipment?
Safety
Defining pests
 What is a pest?
 “Any organism that damages crops”
 Do all pests need to be controlled?
 No
 Why?
 O...
Defining pests
 What are the options for controlling pests?
 Cultural – such as variety and hand weeding
 Biological co...
Defining pests
What are the major types of pests?
Weeds
Insects
Diseases
Mites
Rodents
Snails & slugs
Defining pests – why important?
Weeds Insects Disease Mites Rodents Snails/
slugs
Compete
for water
nutrients
and light

...
About Weeds
Not all
weeds are
the same
Grasses
Broadleaves
Sedges
About Weeds
What characterizes Grasses?
 Leaves are narrow, arranged in sets of two; stems are
rounded or flattened.
About Weeds
What characterizes Broadleaves?
 Leaves are wide, veins branch out in different
directions.
About Weeds
What characterizes Sedges?
 Leaves are narrow, arranged in sets of three; stems are
triangular in cross secti...
About weeds
 Why is this important?
 Can you control a grass with a broadleaf herbicide?
 Rarely!
 Do different broadl...
About Diseases
Not all
diseases are
the same
Bacteria
Fungal
Viruses
About Diseases
Just like weeds, each disease and each type almost always
needs a different treatment
 Viruses can almost ...
About Diseases
 Note that many diseases (especially bacteria and
viruses) spread by contact.
 Thus it is important to ad...
Prepared by Mark Bell, Mark Henderson and
Frank Zalom with input from
Ehsan Ehsanullah
and Tom Brown
Prochain SlideShare
Chargement dans…5
×

Pesticide Training Course UC Davis, Defining Pests. Part 1 of 5

Livres associés

Gratuit avec un essai de 30 jours de Scribd

Tout voir
  • Soyez le premier à commenter

  • Soyez le premier à aimer ceci

Pesticide Training Course UC Davis, Defining Pests. Part 1 of 5

  1. 1. Prepared by Mark Bell, Mark Henderson and Frank Zalom with input from Ehsan Ehsanullah and Tom Brown
  2. 2. Course objectives  Know key points in the application and safe use of pesticides  Note: At the end, participants will take a review quiz to show they can recall all the key points.  Support materials – fact sheets and check lists, review quiz,
  3. 3. Course structure Pesticides Defining pests Defining pesticides Do I need to spray? About equipment? Safety
  4. 4. Defining pests  What is a pest?  “Any organism that damages crops”  Do all pests need to be controlled?  No  Why?  Only important if cause economic loss Other reasons?  e.g., Long term build up
  5. 5. Defining pests  What are the options for controlling pests?  Cultural – such as variety and hand weeding  Biological control - e.g., Lady bugs eat aphids  Pesticide Note: All photos UC IPM – unless otherwise indicated
  6. 6. Defining pests What are the major types of pests? Weeds Insects Diseases Mites Rodents Snails & slugs
  7. 7. Defining pests – why important? Weeds Insects Disease Mites Rodents Snails/ slugs Compete for water nutrients and light  Reduce fruit quality ()   () () () Reduce leaf area (PS)      Reduce nutrient flow in plant  PS = photosynthesis
  8. 8. About Weeds Not all weeds are the same Grasses Broadleaves Sedges
  9. 9. About Weeds What characterizes Grasses?  Leaves are narrow, arranged in sets of two; stems are rounded or flattened.
  10. 10. About Weeds What characterizes Broadleaves?  Leaves are wide, veins branch out in different directions.
  11. 11. About Weeds What characterizes Sedges?  Leaves are narrow, arranged in sets of three; stems are triangular in cross section.
  12. 12. About weeds  Why is this important?  Can you control a grass with a broadleaf herbicide?  Rarely!  Do different broadleaves need different types of herbicide?  Often – as do different grasses and different sedges  The exception to all is when a non-selective herbicide can be used to control everything
  13. 13. About Diseases Not all diseases are the same Bacteria Fungal Viruses
  14. 14. About Diseases Just like weeds, each disease and each type almost always needs a different treatment  Viruses can almost never be controlled by chemicals  Viruses are usually spread by insects – so insect control may be the best form of control for viruses
  15. 15. About Diseases  Note that many diseases (especially bacteria and viruses) spread by contact.  Thus it is important to advise orchard growers to sterilize any pruning equipment or other equipment used to chop branches, etc..
  16. 16. Prepared by Mark Bell, Mark Henderson and Frank Zalom with input from Ehsan Ehsanullah and Tom Brown

    Soyez le premier à commenter

    Identifiez-vous pour voir les commentaires

Vues

Nombre de vues

1 847

Sur Slideshare

0

À partir des intégrations

0

Nombre d'intégrations

316

Actions

Téléchargements

104

Partages

0

Commentaires

0

Mentions J'aime

0

×