This document discusses integrated weed management (IWM), which aims to control weeds through multiple strategies used together. IWM incorporates cultural, mechanical, chemical, prevention, and biological tactics. Cultural tactics include crop rotation and cover crops to make crops more competitive against weeds. Mechanical tactics involve hand-pulling and tillage. Chemical control uses herbicides, emphasizing multiple modes of action. Prevention monitors inputs and cleans equipment to avoid spreading weeds. Biological control researches using organisms to target weeds. The goal of IWM is effective long-term weed control through diversified approaches.

1. PACIFIC COLLEGE OF
AGRICULTURE, UDAIPUR
SUBJECT:- WEED
MANAGEMENT
TOPIC :- INTEGRATED WEED
MANAGEMENT
SUBMITTED TO :- DR. G.L.
SHARMA SIR
SUBMITTED BY :- PULKIT
MITTAL

2. INTEGRATED WEED MANAGEMENT (
IWM)

3. INTRODUCTION
 INTEGRATED WEED MANAGEMENT (IWM) is a
diversified approach to agricultural weed
management that aims to more effectively target
problem weeds by incorporating multiple
strategies together.
 INTEGRATED WEED MANAGEMENT (IWM) is an
approach to managing weeds using multiple control
tactics. The purpose of IWM is to include many
methods in a growing season to allow producers the
best chance to control troublesome weeds.

4. WEED
 Weed is unwanted plant.
 A plant out of place
 A plant that is extremely noxious & useless

5. WHY IWM IS NECESSARY ?
 For many years, the availability of convenient,
effective, affordable herbicides and tolerant
crop genetics has allowed producers to
streamline weed control.
 But the rapid rise in herbicide resistant weeds in
the US has led to problematic weed populations
that can no longer be managed with simple
herbicide programs. Increasingly, stubborn
weeds demand a diversified approach for
effective management.
 As a result, herbicides are in need of extra help
to continue to ensure adequate weed control.

7. IWM PLAN :
 As using the same herbicide again and
again can lead to resistance, reliance on
any one of the weed.
 Two major factors to consider when
developing an IWM plan are :-
 (1) target weed species
(2) time, resources, and capabilities
necessary to implement these tactics.

8. THE FIVE COMPONENTS OF
IWM:
1. CULTURAL
2. MECHANICAL
3. CHEMICAL
4. PREVENTION
5. BIOLOGICAL

9. CULTURAL:-
 Cultural tactics are crop management decisions
that make crop more competitive against weeds
and help optimize the effectiveness of herbicide
applications.

10. Growers can incorporate this tactic by:
 Reduced row spacing so the crop can reach
canopy more quickly to shade out weeds.
 Crop rotation to prevent weeds from adapting to
the weed control tactics common in any one crop.
 Nutrient management to allow optimum crop
uptake while denying weeds access to nutrients.
 Cover crops to compete with weeds for space,
sunlight, nutrients, and water.

11. MECHANICAL:-
 Mechanical weed management focuses on physical
practices that disrupt germination and destroy plant tissue.
Growers can incorporate this tactic by:
 Hand-pulling
 Tillage
 Burning
 Mowing

12. CHEMICAL:
 Herbicides are a key part of IWM in conventional
and some organic systems. In conventional
crops, using multiple effective herbicide modes
of action (MOA) is essential for effective control of
resistant weeds.
Good management practices for applying herbicides
include:
 Timely scouting.
 Proper weed identification and awareness of what
herbicide-resistant weeds are in the area.
 Correct herbicide application, meaning applying
the appropriate product at the right rate and at the
right time.

14. PREVENTION:
 Monitor inputs to the farm to avoid bringing in things that
may be contaminated with weed seeds.
Growers can incorporate this tactic by:
 Avoiding crop seed, manure, and other inputs.
 Cleaning equipment, including combines (combine
cleaning methodology), that could transport weed seeds
between fields.
 Scouting for weeds in a timely manner.

15. BIOLOGICAL : -
 A less common IWM strategy is the use of
living organisms, including livestock,
insects, nematodes, fungi, and bacteria, to
target weeds.
 This tactic is arguably the least used of all
tactics but is the subject of much research.

16. THANK
YOU