eChapters

ABSTRACT

Spectral signatures are the specific combination of reflected and absorbed electromagnetic radiation at varying wavelengths which can uniquely identify an object. The “Spectral signature” of an object is a function of 1) incidental EM wavelength and material interaction with that section of the electromagnetic spectrum. The measurements can be made with various instruments, including a task specific spectrometer, although the most common method is separation of the Red, Green, Blue and Near Infrared portion of the EM spectrum as acquired by digital cameras. The spectral signatures serve as diagnostic tools in understanding the composition and structure of the materials. The present paper highlights the usefulness of the spectral signatures in rock and mineral discrimination and mineral exploration and stresses the need for creation of a spectral data base in India for various applications.

1. INTRODUCTION

Objects at the Earth's surface emit and reflect many wavelengths of radiation. In principle, each object has a unique spectral signature, which could be used for identification much like a finger print. Remotely sensed spectral signatures could be utilized for recognizing and mapping for all kinds of features. This can be done to a limited extent with conventional multispectral scanners that operate in a few broad bands of visible and infrared energy. However, broad spectral bands often do not distinguish between similar features. To overcome this limitation, a more sophisticated approach toward spectral signatures has arisen during the past few years. This approach is called image spectroscopy or hyperspectral analysis, which is based on scanning hundreds of closely spaced and very narrow spectral bands. With this technique, it is possible to create continuous spectral response curves, which may be used to identify many objects positively.

The utilization of biomass presents a promising avenue for addressing the challenges of resource scarcity, waste management, and environmental sustainability. This book chapter delves into the multifaceted applications of biomass, with a particular focus on the processing of straw, a versatile agricultural residue. From providing essential bedding material for animals and enhancing agricultural practices to playing a pivotal role in horticulture, cushioning, mulching, and composting, this chapter examines the diverse roles that processed straw assumes. Furthermore, it explores its significance in paper and cardboard manufacturing and its emergence as a renewable fuel source, underscoring how thoughtful biomass utilization paves the way toward a more environmentally conscious and resilient future.

Abstract

Agricultural practices prior to the eighteenth century were completely dependent on crop landraces and their mixtures. The knowledge of plant genetics and its application to crop improvement programmes led to increase the production potential of agriculture. Contrary to this, the wonders of crop improvement have resulted in the erosion of genetic diversity of many crops in farmers’ fields, including wheat, due to the replacement of landraces and farmers’ old cultivars with modern high-yielding cultivars.

Wheat is cultivated over an area of 216.6 million hectare globally and the production is 674.9 million tons. The seven largest producers of wheat are China, India, the Russian Federation, the USA, France, Turkey and Canada. During 2012-13, India produced 92.46 million tons of wheat from 29.65m ha area with productivity of 31.19q/ha (4th Advance Estimates, Directorate of Economics and Statistics, Government of India). Three wheat species namely, T. aestivum L., T. durumDesf. and T. dicoccumSchubl are grown in India as commercial crops covering 95, 4 and 1 percent area, respectively. The cultivation of T. dicoccumis confined largely to the regions of Karnataka and Maharashtra.

1. Introduction
Global food insecurity is a prominent concern today, and this concern continues to haunt with exponential population growth, coupled with significant climate changes. The global population has increased at a rapid rate to around 8 billion in number which has led to a corresponding rise in food demand worldwide (UNFPA, 2023). Consequently, ensuring ample crop production has emerged as a primary objective for the entire world. According to World Bank (2023), an important strategy to bring down extreme poverty levels, fostering shared prosperity and providing sustainability for the expected population rise of 9.7 billion is agricultural development by 2050. Nevertheless, optimizing the productivity of a crop is never an easy task. Crop plants continuously face exposure to different abiotic and/or biotic factors, which retard growth and development processes ensuing their reduced productivity and diminished crop quality. Agricultural crops are vulnerable to biotic stresses such as bacteria, nematodes, fungi and herbivores. In addition to biotic factors, these challenges are further exacerbated by abiotic stresses like flooding/waterlogging, drought, temperature variations, soil salinity/alkalinity, heavy metals, nutrient deficiencies and CO2. They have a detrimental impact on crop at different stages of plant growth, ranging from entire plant to tissue and sub-cellular structures. Moreover, the abiotic stressors cause a direct impact on crops by inducing protein denaturation and aggregation, while also increasing the fluidity of membrane lipids (Kumari, 2022). According to Oshunsanya et al. (2019) major abiotic stresses i.e. extreme temperatures, drought, and nutrient deficiency/toxicity, contributes to significant annual crop yield losses ranging from 51-82% worldwide. On the other hand, yield penalties due to waterlogging merely is supposed to increase from 3–11% today to around 10–20% by 2080 (Liu et al., 2023). Daryanto et al. (2016) reviewed the published literatures from 1980-2015 and reported global yield reductions due to drought estimating around 21 % and 40%, respectively in wheat and maize.

Introduction

As per the International Society of Horticultural Sciences (ISHS), horticulture encompasses the cultivation of various crops in limited spaces, including fruits, vegetables, flower, tree, aromatic and medicinal plants. Horticultural products encompass all items, whether in their raw or processed form, that have originated from horticultural crops and practices. The main sectors of horticultural science includes a large number of products like fruits from trees vines and bushes; nuts from perennial trees and bushes; fruits, roots, shoots stems, leaves, and flowers of annual vegetable crops; foliage of aromatic plants and leaves, bark, seeds and roots of medicinal plants and trees. Additionally horticultural products include cut flowers, potted ornamental plants, and bedding plants, which can be annual or perennial, along with trees, shrubs turf, and ornamental grasses cultivated in nurseries for landscaping purposes.

Pulse crops provide nutritious food, feed and fodder and thrive well in fragile eco-systems where other crops often fail. They have the ability to trap atmospheric nitrogen in their root nodules in association with Rhizobium, bringing qualitative improvement in soil health i.e. physical, chemical and biological properties of the soil.  These virtues enable pulse crops to remain an integral part of subsistence farming system of semi-arid tropics as well as of Indo-gangatic plains. The role of pulses has also been recognized for sustaining soil productivity under intensive cropping systems in irrigated conditions.

Pulses are an essential source of protein in the diet of the vegetarian population. Cultivation of pulses has been a long-standing tradition in Uttarakhand, where the availability of alternative sources of protein such as meat and milk is barely sufficient to fulfill the daily dietary requirements. Pulses assume big importance in these rainfed and environmentally harsh regions by being an ideal crop for the prevalent low-input agricultural conditions. In Uttarakhand, pulses not only form the major constituents of the staple diet but also serve as an important source of feed and fodder for the livestock. Pulses also improve the soil health by fixing atmospheric nitrogen as well as by increasing soil organic matter

Reliability aims at assessing the accuracy and consistency of whatsoever the measuring instrument measures irrespective of whether we are measuring what we are supposed to measure or not. Whereas the validity emphasises on the question “are we measuring what we were supposed to measure?”

To clarify the difference between reliability and validity, let us take an example of instruments that measure colour intensity. Assume, an expert develops two separate instruments X and Y to measure the intensity of green and red colour, respectively. But, the commercial manufacturer wrongly tags the red colour measuring instrument as X. When someone uses this wrongly tagged instrument for measuring the green colour intensity, whatever intensity values the instrument yields are reliable but not valid. It is so because the instrument is measuring red colour intensity accurately (hence data is reliable) but it is not measuring what it was supposed to measure –the green colour intensity (hence data is not valid).

The increasing global emphasis on sustainability and the circular economy has brought renewed focus to the valorization of agri-biomass and organic waste—the process of converting low-value, often discarded residues into highvalue products. Agricultural biomass, including crop residues such as straw, husks, and stalks, along with organic waste like food scraps, animal manure, and agro-industrial by-products, is both abundant and underutilized, particularly in developing regions. Traditionally, these materials have been disposed of through open burning, landfilling, or natural decomposition, all of which release significant quantities of greenhouse gases and contribute to environmental degradation. However, recent innovations in green technology and material science are transforming these waste streams into valuable resources. Through processes such as pyrolysis, fermentation, and biochemical conversion, agri-biomass and organic waste can now be converted into biochar, bio-based chemicals, and sustainable biomaterials. These products not only mitigate environmental harm but also create new economic opportunities across agriculture, industry, and the renewable energy sector. By leveraging these advancements, societies can significantly reduce waste, lower emissions, and accelerate the transition to a more sustainable and circular bioeconomy.

Introduction

Agricultural and food wastes pose a multifaceted challenge with far-reaching implications. The staggering amount of waste generated annually not only burdens the environment but also strains economies and impacts societal well being. With the continually increasing demand for agricultural products, this issue becomes even more pressing (Gustavsson et al., 2011). Agricultural and food wastes contribute to reduction of greenhouse gas effect, soil and water pollution, and conservation of biodiversity. Improper disposal methods, such as open burning or dumping, exacerbate these problems. Moreover, the resources invested in producing these wasted goods, such as water, energy, and land, are essentially squandered. From an economic standpoint, the mismanagement of agricultural and food wastes shows loss of potential value. These wastes could be utilized for various purposes, such as energy generation, composting, or animal feed, thus creating opportunities for economic growth and innovation. Food insecurity remains a pressing issue in many parts of the world, yet a substantial portion of food produced is lost or wasted. Redirecting these surplus resources to address hunger and malnutrition could have significant social benefits, enhancing food security and improving quality of life for millions. Incorporation of sustainable farming practices to minimize waste generation, improving harvesting and post-harvest techniques to reduce losses, promoting circular economy principles to maximize resource efficiency, and raising awareness among consumers about the importance of reducing food waste. Development of new waste-to-energy technologies, biodegradable packaging alternatives, or novel methods for converting waste into valuable products. Ultimately, by mitigate its adverse effects on the environment, economy, and society, while simultaneously creating opportunities for a more sustainable and resilient future.

Introduction
Glycerol, a colourless and odourless sweet viscous liquid, is a prominent member of the polyol family—compounds distinguished by their multiple alcohol groups. Chemically known as 1, 3-propanetriol and commonly referred to as glycerine, it contains three hydroxyl (-OH) groups, which contribute to its hygroscopic nature and chemical versatility. As an essential component of lipids, glycerol forms the structural backbone of fats and oils, underscoring its biological and chemical significance. Over the years, glycerol has transitioned from being a laboratory curiosity to becoming a cornerstone of modern industrial processes, thanks to its versatility and renewable sourcing (Zhu et al., 2024).
Modern Applications and Industrial Importance of Glycerol
1. Chemical Industry: As a versatile platform chemical glycerol supports the creation of acrolein, propylene glycol and polyhydroxyalkanoates derivatives. Catalytic transformations allow glycerol to produce glycerol carbonate which finds application in lubricants, solvents and polymer synthesis research (Aranda et al., 2009). Glycerol demonstrates essential functionality in the creation of hydrogen and syngas which results in more eco-friendly manufacturing methods.
2. Pharmaceuticals and Cosmetics: The humectant and lubricant properties of glycerol make it essential for pharmaceuticals and cosmetics where it maintains moisture in cough syrups, lozenges, and skin creams while improving texture. The medical derivative glycerol trinitrate provides essential treatment for angina pectoris which results in substantial therapeutic advantages (Binod et al., 2011).
3. Food Industry: Glycerol functions as a humectant and preservative, maintaining moisture in products like dried fruits, confectioneries, and beverages. In formulations free of sugar, it also serves as a sweetener (Awogbemi and Von Kallon, 2022).
4. Animal Feed: A economical energy source for cattle, crude glycerol, a biodiesel byproduct, helps sustainable agricultural methods (Mekunye and Makinde, 2024).
5. Energy and Environmental Sustainability: Glycerol is used in biogas development to improve methane yields and helps the development of bio refineries for converting waste glycerol into biofuels, lipids, and other sustainable chemicals (Peng et al., 2023).
6. Other Applications: Glycerol finds usage as a concrete addition for enhanced durability and in antifreeze compositions in the building and automobile industries. In printing, paper manufacture, and microbial fermentation techniques, it also finds roles as a plasticiser, lubricant, and carbon source (Solowski et al., 2020).

7.1 Introduction
Valorization in simple terms means to increase the value of a product, in economics it is usually through government and administrative actions. In the concept of waste management, it is defined as the process of reutilizing or making a new product of value from waste sources. Several kinds of wastes can be transformed into materials and energy of value, one such example is agricultural wastes. These agricultural wastes are eligible to be a base for manufacturing refined commodity (Capanoglu, Nemli and Tomas-Barberan, 2022) such as chemicals, adsorbents, pharmaceutical products, acids, chitosan, certain type of wax esters, pigments etc. or can be used in several industrial or domestic processes as an energy source, most commonly the production of bioethanol. Valorization greatly contributes to circular economy as materials are continuously renewed and reused, minimizing the need for virgin resources. By transforming agricultural wastes into value – added products, valorization helps to close the loop, ensuring that each by – product is put to use in an efficient, affordable and green way, thereby reducing the dependance on conventional waste management techniques such as landfills and incineration. Moreover, valorization has other benefits, including improved public health, development of newer industries in the material recovery and processing and waste management sector. It can also bring about social awareness about sustainable practices, fostering responsible consumption and waste disposal behaviors.
7.2 Types of Agricultural Wastes
Generally, agricultural wastes are organic. The most common types of agricultural wastes are biomass from rotten produce, crops, livestock carcasses, dead leaves, droppings from livestock and straws. These organic wastes have vast potential in being converted to value – added products through various methods without much additional treatment. Inorganic wastes such as heavy metals like Pb, Cu, Hg and Ba are also found in agricultural runoff containing pesticides, paints etc. Figure 7.1 (Omojola Awogbemi et al. 2022) provides various examples of agricultural wastes that are commonly used in the production of materials and energy.

Foodgrains are a fine example of diversity of nature with many varieties and varied features. They are storable food commodities and lend themselves to numerous processing manipulations. Nutritionally foodgrains are rich source of almost all known nutrients and several phyto-chemicals. The increasing incidence of metabolic diseases are attributed to unbalanced energy rich diets lacking in fiber and protective bioactive compounds such as micronutrients and phyto-chemicals (Prakash, 2013). Cereals along with pulse combinations constitute an important part of human diet in many parts of the world because of easy availability, low cost, long shelf life and nutritional balance. During recent past, India has made significant progress in improving the food security of its masses. The green revolution of 60’s helped the country in achieving the food security by improving the availability and access components (Kaul et al., 2016). However, surplus quantity of food produced is not uniformly distributed and the quality component is not addressed properly which has a direct impact on nutrition. In spite of surplus production of foodgrains still malnutrition persists. However, it can suitably be overcome by combining cereals with good quality pulses and other value addition techniques which will go long way in solving the problem of malnutrition. Even though country is producing large quantity of coarse grains particularly maize but its utilization for direct consumption is very low which is mainly due to poor quality of protein. Although maize contains higher proportion of protein (10-12 %), its quality is poor as compared to that of protein in rice due to presence of high concentration of alcohol soluble protein fraction ‘prolamine’ also known as ‘Zein’ in the endosperm. Zein is very low in some essential amino acids, mainly lysine and tryptophan which contribute to more than 50% of the total protein. On the other hand, very high amount of leucine and imbalanced proportion of isoleucine contribute to poor quality of protein in normal maize. To overcome such deficiencies, scientists developed Quality Protein Maize (QPM) where the quality of protein is not only higher than the common maize, but also significantly higher than that of other cereal grains. In the recent past QPM has got special distinction among the cereals due to presence of high amount of essential amino acids like lysine and tryptophan. QPM can be utilized for diversified purposes in food and nutritional security as infant food, health food, convenience food, specialty food and emergency ration. In India maize is consumed mainly in the form of boiled corn or roasted as pop corn. In order to increase the proportion of maize for direct consumption, several traditional food-processing and preparation methods can be used at household level to enhance the bioavailability of micronutrients in maize based diets. These methods include alkali cooking, thermal processing, mechanical processing, soaking, germination/ malting and fermentation. In countries like Central America and Africa, it is converted into food products by grinding, alkali processing, boiling, cooking and fermentation (Srilakshmi, 2008).

Abstract

A survey was conducted in five different villages of Kangra district (HP) namely Padhiarkhar, Lachoon, Avery, Saliana and Patti. Thirty families from each village were selected. A sample of 650 subjects of different age groups was surveyed to assess their food and nutrient intake. It was observed that the food and nutrient intake was less as compared with the Recommended Daily Allowances (RDA). To meet the RDA of the vulnerable section of the society some of the energy rich recipes were prepared under All India Coordinated Research Project in Home Science. The recipes prepared were weaning mix (salty), Weaning mix (sweet), Papad, Shakerpare, Mathri, Pinni, Amaranth ladoo, Methi ladoo and Panjiri. These products were organoleplically acceptable. No fat content was found in the papad but it contained good amount of the vitamin C i.e. 70mg/100g. Maximum fat content was found in the panjiri (39.3g/100g). Protein content ranged between 0.78-5.64g/100g, minimum in panjiri and maximum in weaning mix (salty).

Abstract

Self Help Group (SHG) has emerged as a new paradigm for combating poverty and self help promotion has become one of the major developmental strategy in the country today. The self help groups are motivated to take up suitable micro entrepreneurship for income generation either individually or in groups, which is dependent on the resource availability and their skills. The empowered SHG women have started different small enterprises such as papad making, malt preparation, different value added products, and other agro based industries which has increased their income. In recent years agro processing and value addition to the farm produce have attained great socio economic significance. A massive thrust to food processing and other agro based industries will add value to the product there by increasing the income of farmers, create employment opportunities, diversify rural economy and foster rural industrialization.

14.1 What is Education

Education is a systematic attempt towards human learning. All learning is subjective and self related. It is neither literacy nor information. Knowledge can never be learned. Knowledge is the fruit of experience and experience is the sensation of the individual. Individual experience is the internal function and is the function of awareness and understanding. And, one of the processes of knowledge and raising awareness is to be able to identify and clarify our values. Now values in education are essential to help each one of us directly so that we may order our relationships to the environment that lies outside us. Once we are clear about values, we shall be better able to shift and control information of the natural world, make wise choices and decisions, and be creative in our mental processes.

5.1 Introduction
One of the main methods for cost avoidance and prevention is value engineering/ value analysis. “Society of American Value Engineers (SAVE)” states that value Analysis is the systematic use of known procedures which determine the function of a product or service, define a monetary value for the function, and provide the essential function reliably at the lowest overall cost. If these are applied to a new product, it is called value engineering. By analysing the function of any product, material part, component, system, or service, it is possible to find extraneous expenditures connected with them and effectively remove them without compromising the product’s quality, functional dependability, or ability to provide services. The principles and steps of value analysis/ value engineering will supplement the effort of design thinking.
5.2 Symptoms for Introducing Value Analysis (VA)
If one or more of the following symptoms exist, starting a VA programme is expected to yield very positive effects.
i. Sales of the company’s products are declining.
ii. The prices of the products of the company are greater than those of the products of its rivals.

Introduction

Soil is a dynamic natural body, characterized by high degree of spatial variability due to combined effect of physical, chemical or biological processes that operate with different intensities at different scales (Goovaerts 1998). Reports have shown that there is large variability in soil properties, crop yield, disease, weed etc., not only in large-sized fields (Godwin and Miller 2003,Vrindts et al. 2005), but also in small-sized fields (Bhattacharya et al. 2008). Therefore, knowledge of hydro-physical properties of soils is crucial for management practices for all kinds of agricultural practices for efficient utilization of input resources. Plant growth and development is highly related to soil hydro-physical properties, which not only depend on soil intrinsic textural and chemical characteristics (Hamza and Anderson 2005) but also on soil management.

Soil physical properties which change with the variation in soil structure include bulk density, total porosity, pore geometry (size distribution, shape, continuity and tortuosity), penetration resistance and aggregate stability, consequently affecting soil hydraulic properties such as water retention characteristics, plant available water capacity, infiltration capacity and saturated hydraulic conductivity. These soil properties are dependent on seasonal climatic conditions, management practices, crop development and biological activity (Reynolds et al. 2007). The hydro-physical properties of soils, i.e., water retention and water permeability in both saturated and unsaturated zones not only shape soil water balance but also decide the conditions for plant growth, development and yield. They also determine water availability for the plant root system and the transfer of water with chemical compounds dissolved in it into deeper layers.

Abstract

Ten genotypes of Cenchrus ciliaris L. were evaluated for seed yield and its components under arid environment prevailing at Jodhpur. The genotypes were grown (using seeds) during July 2010 and three cuts of fodder were taken up to November, thereafter allowed to produce seeds. Fodder of re-growth was finally harvested in June 2011 after seed collection. Analysis of variance showed significant variation among the genotypes for all the characters studied, viz.

Variable is any character or attribute of the given object/set of objects which varies from object to object or from one point of time to another point of time. For example height of individuals is a variable; it varies from person to person.  Kerlinger (1973) defined variable as a symbol to which numerals or values are assigned.

Importance of variables: In previous sections, we discussed about formulating the research problem and development of research hypothesis. Variables are the building blocks of any scientific research problem and research hypothesis. When we consider a hypothesis to be relational hypothesis, we mean that it make claims about relationship between two or more variables. When we test hypothesis, as such we do not test the hypothesis, rather we test the significance of hypothesised relationship between two or more variables. Since variables play central role in observation, measurement and testing of relationship, it is of prime importance to understand the meaning of variables, different types and the way we define these variables.