 |
PLSOILIN 310: Principles of Weed
Management
Instructor:
Dr. Prasanta C. Bhowmik
Semester: Fall
Lecture: TuTh 9:30-10:20
Laboratories:
- W 9:05-11:05
- Th 11:15-1:15
- Th 1:00-3:00
Credits: 3
Required Work: Three lecture examinations (60%), Laboratory sessions
(20%), and Weed Collection (20%)
Course Description:
History of weed control; importance of weeds and their relationship to people
and the environment; ecology of weeds, competition, persistence and survival
mechanisms; reproduction, seed germination, and dormancy; methods of weed
control, cultural, biological, chemical, and integrated pest management
strategies; classification of herbicides and their selectivity; soil factors
affecting herbicide performance, persistence and degradation; application
equipment and calibration of sprayers; weed management systems for various
crops and non-crop areas.
Course Schedule:
|
Week:*
|
Discussion
Topic
|
|
|
|
1
|
Introduction;
definition of weeds; beneficial and harmful effects of weeds; costs
of weeds |
|
2
|
Ethnobotany;
weeds for human and animals; medicinal uses, agricultural uses |
|
3
|
Weed
biology; weed classification, reproduction and seed dispersal |
|
4
|
Weed
ecology; seed dormancy and its significance; ecological concepts |
|
5
|
Allelopathy;
definition and concepts; chemistry and production of allelochemicals;
potential use of allelopathy in weed management |
|
6
|
Weed-crop
competition; significance of plant competition; efficient and non-efficient
weed species; critical periods; models of competition |
|
7
|
Methods
of weed management |
|
8
|
Biological
weed control; Chemical weed control |
|
9
|
Properties
and uses of herbicides; selectivity, herbicide class, properties of
herbicides |
|
10
|
Plants
and herbicides; factors affecting herbicide performance; absorption
of herbicides |
|
11
|
Soil
and herbicides; factors influencing herbicide behavior; soil persistence |
|
12
|
Herbicide
application; herbicide formulations |
|
13
|
Pesticide
legislation and registration; Chemical weed management and the ecosystem |
|
14
|
Weed
management recommendations; various crops in New England StatesWeed
management recommendations; various crops in New England States |
| |
|
| |
*Time
devoted to each topic is approximate
|
|
