eChapters

4.1. Seed policy

4.1.1. Seed policies formulated for governing seed quality control system

5.1. Seed village

Compact area approach in which the whole village is involved in seed production.

Concept is a win-win model (Deepak Mullick)

Seeding /Sowing

Seeding is the process of planting seeds in soil to grow crops, plants, or grass. It is a fundamental step in the cultivation of plants and is essential for agricultural production, landscaping, and reforestation. The goal of seeding is to establish and promote the growth of desirable plants, allowing them to germinate, develop, and eventually mature into a full-grown plant, tree, or crop.

The process of seeding typically involves placing seeds at a specific depth in the soil, providing the necessary conditions for germination (such as water, light, and temperature), and ensuring proper spacing between seeds to allow for healthy plant growth. The choice of seeding method and the timing of seeding can vary depending on the type of plant or crop being grown and the specific environmental conditions of the planting area.

Seeding can be done manually by hand; using specialized seeding tools and equipment, or through mechanized methods, such as using tractors and seed drills for larger agricultural operations. The success of seeding is crucial for the establishment of healthy and productive plants, making it a critical step in agriculture and horticulture.

Seedling:A seedling is a very young plant that grows from a seed. When the moisture, light, and temperature conditions are correct, the seedling’s development begins with seed germination and the formation of three main parts:

1.Radicle - Embryonic root

2.Hypocotyl - Embryonic shoot

3.Cotyledons - Seed leaves.

In vegetables and annual ornamental crops where generally seed size is small they are germinated in nursery beds or in plug trays indoor (greenhouse) or outdoor(field), hardened before transplanting.

Sapling: A sapling is a young tree, say more than 1 year and less than 3 years’ old. In the life cycle of trees, a seedling converts into a sapling as the next stage of development. It is nearly one-meter tall and generally remains to be known as a sampling until its stem reaches 7 centimetre in diameter. The time period of this stage depends upon the particular species of a tree. In vegetable and annual ornamental crops seedlings generally are one month to 40 days old. Older than this, seedlings do not give better yields on transplanting. Very young seedlings exhibit larger mortality on transplanting.

Transplanting: Transplanting or replanting is the technique of moving a plant by uplifting from one location to another. From nursery beds seedlings or saplings are shifted and planted either in the field or greenhouses for commercial growing. Seedlings are uprooted if grown in soil medium. They are transplanted with growing medium. Uprooted seedlings take time to establish at a new place and face transplanting shock- time taken by roots to establish contact with the soil or growing medium.

The success of mechanized transplanting largely depends on the quality of seedlings used, making seedling raising an essential component of the process. This chapter revolves around the techniques and practices involved in raising seedlings that are optimized for transplanters. Proper seedling raising ensures that the plants are healthy, uniform, and robust, thereby improving the efficiency of the transplanting process and enhancing crop yields. We will explore various methods for preparing seedlings, including the use of specialized nurseries, seedling trays, and appropriate handling techniques to prevent damage. Understanding these techniques is important for achieving optimal performance from transplanters, reducing labor costs, and promoting sustainable agricultural practices. Transplanting is a common method for controlling weeds in wet or puddled fields. It uses less seed than direct seeding but requires significantly more labor. Additionally, transplanted crops tend to take longer to mature due to transplanting shock.
TECHNIQUES OF MANUAL TRANSPLANTING
Manual transplanting can be performed using two different methods:
Random Method
In the random method, seedlings are transplanted without maintaining a set distance or spacing between plants. While it’s difficult to establish equal distances between each hill in this method, it is crucial that the estimated distances are neither too close nor too wide. The spacing should range between 10 cm and 25 cm to ensure effective weed control through early shading from the rice canopies.

Seepage is the movement of water through the soil body and foundation of a hydraulic structure. In an earthen dam, uncontrolled seepage may produce excessive water loss, high pore-water pressure, slope instability, internal erosion, piping, or complete structural failure. Seepage analysis therefore determines the quantity and path of water movement and helps engineers design filters, drains, impervious cores, cut-offs, and other protective components. This chapter explains the objectives and importance of seepage analysis, Darcy’s law, permeability, seepage velocity, phreatic lines, flow nets, equipotential lines, and flow channels. It also examines seepage forces, piping conditions, exit gradients, and methods for improving dam safety.

Rationally selected and contextually defined research problem is the foundation to the successful research project. If the selected research problem is not in line with the interests of the researcher, available time, resources, infrastructure & knowledge base then achieving success in research process remains highly uncertain. Consequently, in addition to hindering of professional growth of the researcher, it also results in wastage of time, money and human effort. Most importantly, it may sometimes add up incorrect knowledge into scientific base, hindering the process of scientific progress. Hence the identification of the research problem and designing the problem statement is the most important step in the research process.

Choosing the appropriate construction materials requires evaluating their properties, cost, availability, and how well they suit the particular project. Common materials include concrete, steel, bricks, wood, stone, glass, and various plastics. Key specifications often considered are strength, durability, fire resistance, and environmental impact.
MATERIALS OF CONSTRUCTION FOR TRADITIONAL GREENHOUSE
Traditional greenhouses are built using a variety of materials that ensure durability, insulation, and protection for plants, while also allowing sunlight to penetrate. The selection of materials depends on factors such as cost, climate, and the greenhouse’s intended purpose. Here are some of the common materials used in constructing traditional greenhouses:
1. Wood: Wood has been a traditional and widely used material in greenhouse construction due to its affordability and ease of use. Treated wood, such as cedar or redwood, is commonly chosen for its resistance to decay and insects. Wood offers good insulation and stability, making it suitable for different climates.
2. Galvanized Steel: Steel frames provide exceptional structural support and are known for their strength and durability. Galvanized steel is coated to prevent rust and corrosion, extending its lifespan. Steel frames are capable of withstanding heavy loads and harsh weather conditions.
3. Aluminum: Aluminum frames are lightweight and resistant to corrosion, making them a favored choice for greenhouse construction. They are easy to assemble and require little maintenance over time.
4. PVC Pipes: PVC (polyvinyl chloride) pipes are cost-effective and simple to work with, making them ideal for smaller or temporary greenhouses. They provide a basic, lightweight framework that is easy to assemble.

Objectives
• To introduce the concept of seminars and conferences.
• To impart knowledge on organizing seminars and conferences.
• To highlight the necessity of such platforms for intellectual and professional exchange.
• To provide insights into the qualities of effective seminars and conferences.
Introduction
Seminars and conferences are platforms for intellectual exchange that have grown significantly in scope and purpose over time. Originally restricted to academic settings, these forums have become indispensable in professional environments. Traditionally, they allowed students and researchers to present their findings through oral or written reports. However, in the modern era, characterized by unprecedented advancements in science and technology, the need for structured intellectual engagement has increased.
These gatherings offer an excellent opportunity for individuals to think collectively, solve complex problems, and plan strategically. They providethe necessary environment for brainstorming and collaboration, ensuring th  efficient use of both human and material resources. In this century of rapid technological evolution and global connect ivity, seminars and conferences serve as crucial tools for learning, networking, and driving innovation.

Sensor is a device which converts environmental parameters into electrical signals. In the broad definition, it is a device, module, machine, or subsystem which is designed to detect events or changes in the environment and send the information to other electronics components. An actuator is a component of a machine which is responsible for moving and controlling a system. A microcontroller is a small computer on a single metal-oxide-semiconductor (MOS) integrated circuit (IC) chip. This chapter explains the microcontroller development boards and their components along with the classifications of sensors and actuators.

4.1 Classification of Sensors

The sensors can be classified on the basis of different areas as follows-

i. Classification based on Application

Sensors are chosen on the basis of application where they need to be implemented like Industrial process control, measurement and automation, Automobiles, Consumer electronics, Aircraft, Medical products etc. As with change in application the selection criteria changes, so application needs to be considered.

Introduction

Quality is the ultimate criterion of the desirability of any food product to the consumer. Overall quality depends on quantity, nutritional and other hidden attributes along with sensory quality. Sensory quality is of great importance to both processors and consumers, since it attracts consumers; it satisfies consumers’ aesthetics and gustatory sense. Sensory quality is the combination of sensory senses of perception responsible for choosing and eating a food.

According to Institute of Food Technologists and the American Society for Testing and Materials, sensory evaluation is a scientific method used to evoke measure, analyze, and explain those responses to products as perceived through different senses like sense of sight, smell, touch, taste, and hearing (Stone and Sidel, 2004). Sensory evaluation gives a general rule for the preparation and serving of samples under controlled conditions so that unfair decisions are minimized. People for sensory evaluation are often placed in individual test booths so that the judgments they give are true and do not reflect the opinions of those around them.

Samples with random numbers are given to the evaluators so that they do not form judgments based upon labels, but rather on their sensory experiences. Products may be given in different orders to each evaluator to help measure and to ensure internal validity by controlling the potential confounds created by sequence and order effects. To control unwanted variation and to improve test precision, standard procedures may be established for sample temperature, volume, and spacing in time, as needed.

Sensory evaluation or testing is a quantitative science in which numerical data are collected to establish lawful and specific relationships between product characteristics and human perception. Sensory methods draw heavily from the techniques of behavioural research in observing and quantifying human responses. For example, we can assess the proportion of times people are able to discriminate small product changes or the proportion of a group that expresses liking for one product over another. Another example is having people generate numerical responses reflecting their perception of products taste and smell.

Sensitivity-Threshold tests Sensitivity tests are conducted to assess the ability of individuals to detect different tastes, odors and feel the presence of specific factors in.

5.1. Emergence of Service Area Approach

During the five years ended 1985-86

Gross value added in agricultural sector: 2.70% per annum.

Share of agriculture in total net domestic product declined from 39.80% to 35.40%.

Food grains production increased from 133.30 million tons to 150.50 million tons by 18%

In contrast, there was 41% increase in outstanding level of credit for agriculture from rural lending agencies viz., Co-operatives, RRBs and CBs between June 1981 and June 1986.

Share of Haryana, Punjab and U.P. in total food grains production was around 38% accounted for 75% increase in food grains output.

However, their share in the total institutional credit was 22% only.

Sexual propagation through seeds is a fundamental method for producing horticultural crops, rootstocks, and planting material. This chapter explains seed structure, quality, viability, dormancy, germination, and factors affecting successful seedling establishment. Different types of seed dormancy and methods for overcoming dormancy are discussed, including scarification, stratification, chemical treatments, temperature management, and appropriate moisture conditions. Seed testing and quality considerations are important for obtaining uniform and healthy plants. The chapter also emphasizes the influence of temperature, oxygen, water, light, and substrate conditions on germination. Understanding seed biology enables students and growers to produce vigorous seedlings and establish reliable nursery and crop-production systems.