Semester V
Weed Management
AGR 311 · 2 (1+1) credit hours
Syllabus
Topic-wise syllabus
Theory
14 topics · 16 lectures
| No. | Topic | Lectures |
|---|---|---|
| Unit I | ||
| 1 | Weed: Introduction, Characteristics, Definition and Importance (Morphological, physiological, and reproductive characteristics of weeds.) | 1 |
| 2 | Classification of Weeds. Classification based on habitat, life cycle, and growth form | 2 |
| 3 | Weed Reproduction and Dissemination (Mechanisms of weed seed production, dispersal methods, and factors affecting weed spread) | 1 |
| 4 | Crop-Weed Competition and Factors affecting it (Understanding the competition between crops and weeds for resources such as light, water, and nutrients. Effects of weed density, timing, and growth patterns on crop yield loss and factors affecting competition.) | 1 |
| 5 | Factors Affecting Weed Growth and Development (Environmental and agronomic factors influencing weed growth, such as soil type, moisture, and temperature) | 1 |
| Unit II | ||
| 6 | Weed Seed Bank: Concept and Studies. Understanding the concept of weed seed banks, their persistence, and impact on long-term weed management. | 1 |
| 7 | Weed Shifts and Their Impact. What is a weed shift? Effects of herbicide use, crop rotation, and other factors on weed populations | 1 |
| 8 | Concepts and methods of Weed Management. Introduction to various weed management strategies: physical, cultural, chemical, and biological. Techniques of Physical, Cultural, Chemical and Biological Weed Control Methods | 1 |
| 9 | Integrated Weed Management (IWM). Principles and approaches for integrating various weed control strategies for sustainable management. Implements for Weed Control: Tools and machinery used for mechanical weed control, including cultivators and herbicide applicators | 1 |
| Unit III | ||
| 10 | Robotic Weed Control. Introduction to robotic weed control technologies and their role in precision agriculture. Weed Management in Organic and Natural Farming. Approaches to weed control in organic farming, including mulching, crop rotations, and non-synthetic herbicides | 1 |
| 11 | Herbicide Classification, their properties, herbicide resistance and its management. Detailed classification of herbicides based on their chemical structure, mode of action, and selectivity. Understanding herbicide resistance, its causes, and strategies for managing resistance in weed populations. | 2 |
| 12 | Adjuvants, Surfactants, Herbicide Formulation, and Use. Role of adjuvants and surfactants in herbicide effectiveness, and understanding herbicide formulations | 1 |
| 13 | Role of Nano technology and Precision Weed Management. Emerging technologies in nano herbicides and their role in weed management. Emerging precision technologies in weed management | 1 |
| 14 | Aquatic weed management and weed management in cropping systems | 1 |
Practical
10 topics
| No. | Topic |
|---|---|
| 1 | Techniques of Weed Preservation. Methods of preserving weed specimens: drying, pressing, and storage for future identification and study |
| 2 | Weed Identification and Losses Caused by Weeds. Field practice on identifying common weeds and understanding the yield losses caused by specific weed species in different crops |
| 3 | Study Biology of Important Weeds under different situations. Practical observation of the life cycle of important weeds, including germination, growth, reproduction, and dissemination in diverse environments such as cultivated fields, orchards, roadsides, and fallow lands to understand their ecological behavior |
| 4 | Study of Herbicide Formulations and Herbicide Mixtures. Laboratory study of different herbicide formulations: liquid, granular, soluble concentrates, and their composition and properties. Herbicide dose calculation for aquatic and terrestrial weeds chemical control. Practical demonstration of mixing various herbicides and studying their compatibility, efficacy, and impact on different weed species |
| 5 | Methods of Herbicide Application. Field practice on applying herbicides using various methods |
| 6 | Study of Herbicide Application Equipment - Parts, Use, Maintenance, and Calibration. Practical session on working parts of herbicide application equipment (sprayers, spreaders, etc.), how to maintain them, and proper calibration techniques for effective herbicide use |
| 7 | Weed Control Implements. Field demonstration of manual and mechanical weed control tools, such as hoes, cultivators, and weeders, and their applications in different crops. |
| 8 | Calculation of Herbicide Doses and Requirement, Weed Control Efficiency and Weed Index. Hands-on calculation of herbicide doses based on area, crop type, and weed density; understanding dosage variations for effective control and calculation of weed control efficiency (WCE) and weed index (WI) for different weed management methods |
| 9 | Phytotoxicity of Herbicides (Laboratory and field assessment of herbicide phytotoxicity by observing the effects of herbicides on non-target crops and plants.) |
| 10 | Weed Management in Fallow Lands, Problem Weeds and Parasitic Weeds (e.g., Striga, Orobanche). Practical demonstration of different weed management strategies in fallow lands, including tillage, mulching, and chemical control, controlling problem weeds (such as Parthenium, Congress grass) and parasitic weeds like Striga and Orobanche, focusing on their identification, life cycle, and management |
Syllabus PDF
Study material
Notes
Hindi
Being added
English
Being added