Weed Science Syllabus - Sixth Semester (BSc. AG)

Weed Science Syllabus – Sixth Semester (BSc. AG)

Course CodeAGR 306
Course TitleWeed Science
Credit Hour2(1+1)
Full Marks50
Theory25
Practical25

Objectives

Upon the completion of this course, the students will be able to know the skill and scientific weed management principles and practices of common field crops.

Syllabus of Weed Science in Bsc. Agriculture

Definition, characteristics, classification, dispersal of weed, losses caused and economic importance of weeds, competition between crops and weeds; the concept of prevention, eradication, and control, weed control methods, introduction to herbicides, mode of action of herbicides, herbicides, and environment, and weed ecology.

Course Outline

A. Theory

S.NTopic / Chapter NameNo. of Lectures.
1Weed: concept, definition, and economic importance
1.1 Definition of weed, classification, dispersal of weed
1.2 Loss caused by weed and beneficial aspects of weeds		2
2Characteristics of weedsDormancy, viability and germination; growth habit; reproduction and multiplication; persistence and tolerance/resistance1
3Crop weed competition Crop-weed interference and general principles; Different factors of competition (nutrients, water, light, space), Allelopathy1
4Concept and method of weed control
4.1 Concept of weed control: prevention, eradication, control and management
4.2 Physical and cultural methods and approaches of weed control
4.3 Biological methods and approaches of weed control
4.4 Chemical methods and approaches of weed control
4.5 Biotechnological approaches of weed control
4.6 Integrated weed management: definition, concept and practices		6
5Herbicides
5.1 Definition; characteristics of ideal herbicides; usefulness and limitation of herbicides
5.2 Classification of herbicides: based on time of application, selectivity, site of application
5.3 Mode of action of herbicides
5.4 Herbicides and environments		4
6Weed ecology1
Total15

B. Practical

S.NTopic / Chapter NameNo. of Lectures.
1Identification of weeds1
2Survey of weeds in crop fields and other habitats2
3The critical period of crop weed competition1
4Herbarium preparation of weeds1
5Estimation of weed density, weed control efficiency and
weed index		1
6Weed control of field crops2
7Study of commonly available herbicides in the market, their
nomenclature and label information		1
8Calculation of herbicides requirement for a different formulation2
9Study of herbicide application equipment and calibration1
10Herbicide application methods and precautionary measures1
11Field study and control of problematic weeds–sedges, Bermuda
grass or parasitic weeds		1
12Economics of weed control practices1
Total15

References

Crafts, A.S. and W.W. Robbins. 1973. Weed Control. Tata McGraw-Hill Publishing Co. Ltd., New Delhi.

  • Gupta, O.P. 1999. Scientific Weed management, Mrs. Saraswati for Agro Botanica, J.N. Vyas Nagar, Bikaner, India
  • Gupta, O.P. 2004. Modern Weed Management. Agro Bios (India), Jodhpur.
  • Lantican, R. M. 2001. The Science and Practices of Crop Production. SEAMEO SEARCA. UPLB. Philippines Publication.
  • Rao, V.S. 1998. Principle of Weed Science, Oxford and IBH publishing co. New Delhi
  • Reddy, S. R. 2007. Principles of Agronomy. Kalyani Publishes. Ludhiana. Third revised edition.
  • Reddy, T.Y. and G.H. S. Reddi.1997. Principles of Agronomy. Kalyani Publishers. Ludhiana. Second revised edition.
  • Singh, C. 1997. Modern Techniques of Raising Field Crops. Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi.
  • Subramanian, S., A. Mohammed Ali and R. Jayakumar. 1991. All about Weed Control. Kalyani Publishers, Ludhiana.
  • Thakur, C. 1977. Weed Science. Metropolitan Book Co. Pvt. Ltd., New Delhi. ANIMAL SCIENCE

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