The Handbook of Weed Science: Theory and Practical is a comprehensive resource designed to address the persistent challenge of weeds in modern agriculture. This book integrates theoretical foundations with practical applications, covering key topics such as weed biology, ecology, identification, crop–weed competition, and diverse management principles. Special attention is given to herbicide science, integrated weed management (IWM), resistance management, and emerging eco-friendly advances. With systematically organized chapters, practical exercises, and real-world case examples, the handbook serves both students and professionals by bridging classroom concepts with field-based skills. Its overarching goal is to promote informed, responsible, and sustainable weed management practices that support crop productivity and environmental health.

1.       Introduction to Weed Science

Practical:      Diagram or photo showing drone with GPS nozzles spraying herbicide on target zones

Practical:      Identification and Classification of Common Weeds

Practical:      Study of Weed Adaptations

Practical:      Demonstration of Crop–Weed Competition

Practical:      Weed Seed Bank Study

Practical:      Preparation of Weed Herbarium

Practical:      Preparation of a Weed Flora Report

2.       Weed Biology and Ecology

Practical:      Study of Life Cycle and Morphological Characteristics of Weeds

Practical:      Study of Weed Reproductive Structures and Propagation Mechanisms

Practical:      Examination of Weed Seed Dormancy and Germination Behavior

Practical:      Estimation of Weed Seed Bank in Soil

Practical:      Study of Weed–Crop Competition Using Pot Experiment

Practical:      Identification of Major Weeds Under Different Agro-Ecological Conditions

Practical:      Observation of Allelopathic Effects of Crop Residues on Weed Germination

3.       Weed Identification and Nomenclature

Practical:      Study of Weed Morphology and Nomenclature

Practical:      Identification of Major Grassy, Sedge, and Broad-Leaved Weeds

Practical:      Preparation of Herbarium Specimens of Common Weeds

Practical:      Identification of Aquatic and Marshy Weeds

Practical:      Identification of Weeds Through Vegetative Propagules

Practical:      Identification of Major Weeds of Rice and Wheat

Practical:      Identification of Weeds in Pulses, Oilseeds, and Vegetable Crops

Practical:      Study of Weed Seeds and Fruits

Practical:      Use of Digital and Ai-Based Tools in Weed Identification

Practical:      Weed Flora Documentation and Field Report Preparation

Practical:      Preparation of a Dichotomous Key for Local Weed Flora

Practical:      Laboratory Identification of Weed Propagules

4.       Crop–Weed Competition and Dynamics

Practical:      Study of Crop–Weed Competition Under Controlled Conditions

Practical:      Determination of Critical Period of Weed Control (CPWC)

Practical:      Quantitative Estimation of Yield Loss Due to Weeds

Practical:      Relationship Between Weed Density and Crop Yield

Practical:      Effect of Weed Competition on Nutrient Uptake by Crop and Weeds

Practical:      Identification of Dominant Weeds and Calculation of Importance Value Index (IVI)**

Practical:      Study of Allelopathic Interaction Between Weeds and Crops

Practical:      Calculation of Weed Competition Indices

Practical:      Comparative Evaluation of Weed Management Practices on Crop Yield**

Practical:      Preparation of a Weed Loss Assessment Report for a Local Crop System

5.       Methods of Weed Control

Practical:      Farmer-Led Innovation: Low-Cost Shielded Nozzle for Directed Herbicide Application (Invented by Dr. R. R. Upasani)

Practical:      Study of Various Methods of Weed Control

Practical:      Demonstration of Preventive Measures

Practical:      Field Demonstration of Cultural Weed Control Practices

Practical:      Study and Operation of Mechanical Weed Control Implements

Practical:      Study of Herbicide Formulations and Label Information

Practical:      Calculation of Herbicide Dose and Spray Volume

Practical:      Observation of Biological Control of Weeds

Practical:      Demonstration of Integrated Weed Management (IWM)

6.       Herbicides: Classifications and Mode of Action

Practical:      Identification of Common Herbicides and their Formulations

Practical:      Study of Herbicide Label Information and Safety Symbols

Practical:      Classification of Herbicides Based on Mode of Action

Practical:      Demonstration of Herbicide Injury Symptoms in Crop and Weed Species

Practical:      Study of Herbicide Compatibility Through Jar Test

Practical:      Field Demonstration of Herbicide Selectivity

Practical:      Calculation of Herbicide Dose and Preparation of Spray Solution

Practical:      Study of Herbicide Resistance Symptoms in Weeds (Demonstration/Case Study)

Practical:      Demonstration on Safe Handling and Storage of Herbicides

7.       Herbicide Selectivity, Compatibility, and Persistence

Practical:      Study of Herbicide Selectivity in Crops and Weeds

Practical:      Compatibility Testing of Herbicide Mixtures (Jar Test Method)

Practical:      Assessment of Herbicide Persistence in Soil

8.       Herbicide Formulations, Application Technology, and Safety

Practical:      Physiological Explanation of Dose–Response Relationship

Practical:      Identification of Herbicide Formulations

Practical:      Study of Compatibility and Mixing Sequence

Practical:      Calibration of Knapsack Sprayer

Practical:      Demonstration of Safe Handling and Use of PPE

Practical:      Disposal of Herbicide Containers and Waste

9.       Integrated Weed Management (IWM)

Practical:      Why 0.7 is used

Practical:      Identification of Weed Management Components in IWM

Practical:      Development of Crop-Specific IWM Module

Practical:      Weed Scouting and Mapping for IWM

Practical:      Evaluation of IWM Module Efficiency

10.    Illustrated Classification and Identification of Weeds

Practical:      Identification of Major Weeds in Field Crops

Practical:      Preparation of Weed Herbarium

Practical:      Differentiation Among Grasses, Sedges, and Broad-Leaved Weeds

Practical:      Study of Aquatic and Parasitic Weeds

Practical:      Seasonal Occurrence and Crop Association of Weeds

Practical:      Diagnostic Key Preparation for Weed Identification

Practical:      Preparation of a Regional Weed Atlas (Optional Exercise)

11.    Evolution and Classification of Herbicides: from Conventional to Smart Systems

Practical:      Isolation and Identification of Fungal Bioherbicides from Infected Weeds

Practical:      Preparation of Plant Extracts with Potential Allelopathic Activity

Practical:      Bioassay for Germination Inhibition Using Plant Extracts

Practical:      Preparation and Characterization of a Nanoemulsion Herbicide Formulation

Practical:      Controlled Release Study of Nanoformulated Herbicide

Practical:      Evaluation of Bioherbicidal Efficacy Under Pot Culture

Practical:      Demonstration: Field Application of Bio- and Nanoherbicides

Practical:      Identification and Classification of Common Herbicides

Practical:      Study of Herbicide Formulations and Label Information

Practical:      Demonstration of Selectivity — Crop Vs. Weed Response

Practical:      Identification of Herbicide Injury Symptoms

Practical:      Bioassay for Herbicide Residues in Soil

12.    Herbicide Application, Efficacy, and Environmental Fate

Practical:      Role of Urea and Ammonium Salts in Enhancing Glyphosate Performance

Practical:      How to Interpret Half-Life in Practice

Practical:      Calibration of a Knapsack Sprayer

Practical:      Demonstration of Drift Reduction Techniques

Practical:      Study of Herbicide Application Methods and Equipment

Practical:      Measurement of Spray Coverage Using Water-Sensitive Paper

Practical:      Identification and Diagnosis of Herbicide Injury Symptoms

Practical:      Demonstration of Smart / IoT-Based Sprayer Systems

13.    Herbicide Resistance in Weeds

Practical:      Identification of Suspected Herbicide-Resistant Weeds in Field

Practical:      Comparative Pot Bioassay of Resistant and Susceptible Weeds

Practical:      Dose–Response Study

Practical:      Weed Herbicide History Analysis

Practical:      Herbicide Mode of Action Classification

Practical:      Field Demonstration of Integrated Resistance Management

Practical:      Mapping of Resistant Weed Patches

Practical:      Resistance Diagnosis Decision Exercise

Practical:      Numerical-Based Practical Exercises

Practical:      Basic Resistance Index Calculation

Practical:      Comparative Resistance Level

Practical:      Interpretation-Based Problem

Practical:      Student Practice Set

Practical:      Field Data Template: Practical Record

14.    Weed Survey Techniques and Quantitative Indices

Practical:      Weed Survey and Quantitative Assessment of Weed Flora Using Quadrat, Transect, and Point Methods

Practical:      Data Interpretation Tasks

Practical:      Herbarium Preparation Exercise

Practical:      Precautions During Weed Survey

15.    Weed Flora of Agricultural Ecosystems

Practical:      Note on Sedges in Rabi Season

Practical:      Why this Conceptual Grouping is Important

Practical:      Short Conceptual Notes

Practical:      Detail Morphological Features of Major Aquatic Weeds