CSS302-Lecture12 - II. Methods of Weed Control A

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
II. Methods of Weed Control A Cultural-Crop management to favor the crop and  disfavor the weeds. B Mechanical-The use of physical or mechanical  means to kill or suppress weeds. C Biological-The utilization of natural enemies for  the control of weeds. D Chemical-The use of chemical herbicides in weed  management.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C. Biological Weed Control Natural enemies: – _______________ – _______________ – _______________
Background image of page 2
C. Biological Weed Control 1st Major Success: – Prickly pear cactus ( Opuntia sp. ) – Control by  Cactoblastis cactorus 1st U.S. Success – Klamath weed/St. Johnswort ( Hypericum perforatum ) – Control by  Chrysolina quadrigemina 1 st  U.S. Problem – Musk thistle  ( Carduus nutans) – Control by thistle head weevil  (Rhinocyllus conicus)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Introduced into Australia from Argentina Undesirable as forage (obviously) 1925: – ____________ acres infested
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/28/2010 for the course CSS CSS302 taught by Professor Jimkells during the Fall '08 term at Michigan State University.

Page1 / 15

CSS302-Lecture12 - II. Methods of Weed Control A

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online