WEED MANAGEMENT

Course Objectives

1) To familiarize the students about the weeds, crop -weed competition and critical period.

2)To study the basic information of herbicides their mode of action and methods of weed control.

CO - PO Mapping

COs Course outcomes Mapping COs with POs

CO1 To understand the menace caused by weeds , identify weeds . PO1 , PO2 and PO4

CO2 Students will understand classification of weeds , different methods of weed control, PO2, PO1 , PO4 and PO6

CO3 integrated weed management, and formulations of herbicides. PO1 , PO2 and PO3

Students will able to identify aquatic and problematic weed and their management

Programme Outcomes

PO1 : Knowledge Enhancement : Demonstrate knowledge and understanding of essential facts, concepts, principles and theories relating to Soil Science, Agronomy, Horticulture, Genetics and Plant Breeding, Plant Pathology, Entomology and other such areas of agriculture.

PO2 : Professional Enhancement : Understanding the value and processes of life-long learning and professional development.

PO3 : Entrepreneurship Skills : Understanding the processes of setting up and managing viable business ventures.

PO4 : Communication & Extension Skills : Developing appropriate communication skills for effective transfer of knowledge and technologies through extension programs.

PO5 : Team Work : Play effective roles in multidisciplinary teams.

PO6 : Educational Leadership : Recognize and meet emerging agriculture challenges of global society in the 21st century and developing leadership and strong linkages in the agro-industrial setup.

PO7 : Data Handling : Collect, analyze and interpret scientific data.

PO8 : Ethics : Apply ethical principles and commit to professional ethics and responsibilities and norms of the scientific practice.

PO9 : Computational Skills : Recognize, analyze problems and plan strategies for their solutions with the help of computer skills.

Course Syllabus

Theory
Introduction to weeds, characteristics of weeds their harmful and beneficial effects on ecosystem. Classification, reproduction and dissemination of weeds. Herbicide classification, concept of adjuvant, surfactant, herbicide formulation and their use. Introduction to mode of action of herbicides and selectivity. Allelopathy and its application for weed management. Bio-herbicides and their application in agriculture. Concept of herbicide mixture and utility in agriculture. Herbicide compatibility with agro-chemicals and their application. Integration of herbicides with non chemical methods of weed management. Herbicide Resistance and its management. Transformation of herbicide in plant, Fate of herbicides in soil. Residual effect of herbicides in plant and environment.
Practice
Techniques of weed preservation. Weed identification and their losses study. Biology of important weeds. Study of herbicide formulations and mixture of herbicide. Herbicide and agrochemicals study. Shift of weed flora study in long term experiments. Study of methods of herbicide application, spraying equipments. Calculations of herbicide doses and weed control efficiency and weed index.
Weed survey and vegetation analysis, Field Visit to Farm to observe the effect of various weed management practices in different crops .
References
1. Gupta,O.P. 2012. Modern weed management (4th edition), Agribios (India) Ltd, Jodhpur
2. Rao, V.S. 1992. Principles of weed science ( 2nd edition), Oxford &IBH Publishing Co. Pvt Ltd, New Delhi.
3. Ross,M.A. and Lembi,C.A. 1999. Applied Weed Science. (2nd edition), Prentice Hall of India Pvt Ltd, New Delhi
4. Saraswat,V.N., Bhan, V.M. and Yaduraju,N.T. (Eds.). 1998. Weed management –ICAR Publication

5. S R Reddy , 2020 Weed Management , Kalyani publishing