eChapters

Nanotechnology has been successfully applied in various fields such as agriculture, biochemistry and medicine. However, its application in food systems has been new and is yet to be scrutinised. It offers a range of physical and chemical benefits that can be employed in production, development, fabrication, packaging, storage and food distribution systems. These novel nanomaterials such as nanocapsules, nanocomposites, nanoemulsions, nanoencapsulation, nano packaging, nanotubes and nanosensors have been used to improve food quality with better shelf life. However, there is concern about the safety of these nanomaterials, especially because of partial knowledge about the effects of these materials on human health.

The main objective of nanomedicine broadly defined as the comprehensive monitoring, repairing and improvement of all human biological systems, working from the molecular level using engineered devices and nanostructures to achieve medical benefit. Nanomedicine is the nanomachine of diagnosing, treating, and preventing disease and traumatic injury, relieving pain, and of preserving and improving human health, using molecular tools and molecular knowledge of the human body. Nanotechnology applications in medical science can be essential in achieving this goal. These applications involves extensive surveillance, control, creation, repair, and defence of all biological human systems, employing designed nanodevices and nanostructures which works in molecular level.

Despite substantial advances in the diagnostics and treatment of diseases, parasitic infections are a major global health issue causing significant mortality and morbidity. Currently, chemotherapeutic antiprotozoal drugs, anthelmintic and anti-ectoparasitic agents are used to treat, but resistance to these drugs has developed due to overuse. In this scenario, nanoparticles are proving a major breakthrough in the treatment and control of parasitic diseases. In the last decade, there has been enormous development in the field of nano medicine for parasitic control. Gold and silver nanoparticles have shown promising results in the treatments of various types ofparasitic infections. These nanoparticles are synthesized through the use of various conventional and molecular technologies and have shown great efficacy. 

Nanomedicine, an interdisciplinary field at the intersection of nanotechnology and medicine, has emerged as a promising avenue for addressing complex health challenges. One area of significant interest is the application of nanotechnology in maintaining and improving gut health. This chapter provides a concise overview of the current state of research in nanomedicine's role in promoting gastrointestinal well-being.

Nanoparticles, with their unique physicochemical properties, offer novel approaches for targeted drug delivery, imaging, and diagnostics in the gastrointestinal tract. Engineered nanoparticles can navigate the harsh conditions of the digestive system, delivering therapeutic agents precisely to the intended sites within the gut.

Synthesis of nanoparticulate metal composites (NMCP) presents a multitude of advantages compared to conventional dosage forms. Acne, a multifactorial skin condition, predominantly involves the pilosebaceous unit and is primarily caused by bacterial species such as Propionibacterium acnes and Acne vulgaris. A staggering 95% of the global population is afflicted by acne. Leveragitng NMCP strategies holds immense promise for innovating novel, efficacious, and low-dose treatments for managing acne. This review delves into various nanotechnological methodologies tailored for effectively addressing acne. Methods: This review encompasses recent advancements pertaining to NMCP carriers aimed at treating acne.

Nanomaterials, a cornerstone of nanotechnology, encompass a broad array of particles showcasing remarkable properties and diverse applications. This chapter outlines the classifications and applications of various nanomaterials, including organic, semiconductor, metal, metal oxide, and carbon-based nanoparticles. Each type offers unique characteristics, such as biodegradability, optical and electrical properties, making them valuable in fields like drug delivery, electronics, and catalysis. Furthermore, this study focuses on the interactions of nanoparticles with living organisms, emphasizing their impact on immune systems across plants, invertebrates, and humans. 

This section explores how nanoparticles have a significant influence on sensing and detection, explaining how they have revolutionized analytical capabilities. Our trip through many kinds of nanomaterials, such as metal nanoparticles, semiconductor nanomaterials, and carbon-based structures, aims to explore their distinct features and how they might be used for novel sensing methods. The intricacies behind sophisticated sensor technologies are clarified through an examination of plasmonic sensing, quantum dot applications, and conductive nanomaterial responses. In order to improve selectivity, the chapter emphasises surface modifications and biomimetic coatings as key components of strategic functionalization techniques.

Nanomaterials have emerged as promising candidates for revolutionizing sensing and detection technologies, offering unprecedented capabilities in sensitivity, selectivity, and miniaturization. The current chapter provides a concise overview of recent advancements in the utilization of nanomaterials for sensing and detection applications. It encompasses a diverse range of nanomaterials, including nanoparticles, nanotubes, and nanowires, each exhibiting unique properties that enable enhanced performance in sensing applications. The integration of nanomaterials into sensing platforms has demonstrated remarkable progress in various fields, such as environmental monitoring, healthcare diagnostics & security applications.

Surface-Enhanced Raman Spectroscopy (SERS) may detect and identify chemical and biological species ultrasensitively. Through localized surface plasmon resonance (LSPR) effects, metal nanostructures boost analyte Raman signals. This chapter covers current advances and essential principles in metal nanostructures for SERS chemical detection. It discusses SERS fundamentals and enhancing processes, such as metal nanostructure size, shape, and composition. Top-down and bottom-up processes including lithography, chemical synthesis, and self-assembly are used to create repeatable and controllable metal nanostructures. The complex interactions between light, metal nanostructures, and analyte molecules are best understood by combining theoretical modeling and experimental observations. 

Nanomaterials are a rapidly growing technological sector with diverse applications. These nanomaterials are categorized into distinct groups according to their shape, size, and materials used in their fabrication. The synthesis of nanomaterials follows different strategies that are tailored to their specific applications. This chapter describes the different approaches used for the synthesis of nanomaterials, including top-down, bottom-up, and hybrid approaches. Furthermore, this chapter discusses the advantages and disadvantages of each fabrication method and explores the diverse applications of nanomaterials across multiple fields.

Survival strategies of some plants help them to thrive in any adverse environmental conditions. We classify them as weeds or ruderals. Such weedy species have developed unique and effective physiological traits to withstand various stresses, and unique mechanisms to regulate growth under adverse environments. Climate change is a harsh reality observed in different parts of the world which brings new challenges in crop production and weed management.

Introduction of biotechnological tools in weed science and management has given new dimensions to weed research.

Indian tea has a global reach being the second largest tea producer in the world. Indian tea is one of the finest in the world. Darjeeling tea is the first product to get a geographical indicator tag in India. 83 % of the tea produced in India is from Assam and West Bengal and 17% from the south Indian states of Kerala, Karnataka and Tamilnadu. Weeds are a major problem in tea gardens.

Weed flora

Drymaria cordata, Bidens pilosa,, Cynodon dactylon, Panicum repens, Celosia argentea, Ageratum conyzoides, Centella asiatica, Borreria hispida, Oxalis latifolia, Mikania micrantha, Paspalam conjugatum,

Rice is the primary food source for half of the Asian population. Nearly 2,000 million in this region obtain 60 to 70 per cent of their calories from rice and its products. Considering the importance of the crop, United Nations General Assembly declared 2004 as the “International Year of Rice” (IYR). In India, the crop covers one-fourth of the total cropped area. About half of the Indian population use rice as their staple food.

Rice based cropping systems are not only important for food security but also for maintaing an ecological balance. Low land rice fields conserve water and prevent runoff .They preserve the sustainability of the ecosystem.

Parasitic weeds are a major constraint in tropical agriculture. These are plants that are adapted to live on other plants sharing their nutrients and water. They constitute 1% of flowering plants, approximately 3000 - 5000 species coming under 20 families. Parasitic weeds from five families viz. Orobanchaceae, Convolvulaceae, Santalaceae, Scrophulariaceae and Loranthaceae are considered troublesome weeds as they infest economically important crops in many parts of the world and are very difficult to control by normal weed management measures.

A major portion of the earth’s surface is water. Apart from the oceans, major water bodies on the earth’s surface include rivers, streams, lakes, ponds and canals. Plants adapted to these ecosystems form the aquatic species. When they pose a problem to navigation, fisheries and agriculture and also cause health hazards, they are categorised as aquatic weeds. Problems due to aquatic weeds has been reported from different parts of the world. They are common in warm waters. In Florida, it is reported that water hyacinth (Eichhornia crassipes) covers nearly 40,000 hectares of water resources.

When a herbicide is applied to the soil, it is subjected to various interactions with soil and surrounding environment which ultimately determines its persistence. Dissipation of these compounds from soil system is by three main processes viz., physical (volatilization, leaching and runoff), chemical (photochemical decomposition, adsorption by organic and inorganic colloids and chemical decomposition) and biological (microbial decomposition and plant uptake) 

1. Physical Processes

a) Volatilisation

Major advantage of chemical herbicides over other methods of weed control is its ease of application, which saves the cost of labour for the farmer. Effectiveness of herbicide depends on how long it remains in active form in the plant /soil. The form in which any herbicide is available in the market is known as herbicide formulation. The technical active ingredient (ai.) of the herbicide is converted to a formulations so as to improve easiness of handling, retention on leaf surface, absorption and movement in the plant. Herbicides are available in different formulations.

In a cropping systems there may be simultaneous or sequential application of herbicides, insecticides, fungicides, fertilizers, PGR during a single cropping season. The different chemicals will undergo physical and chemical changes as they interact with plant, soil and other chemical substances already applied to the plant or soil. The interaction effect of such chemical substances will be visible only at the later end of the cropping season. The responses observed in the plants can be.

Herbicides have received wide acceptance from farmers mainly due to ease of application and effectiveness. After application, herbicide molecules should penetrate plant tissue and get translocated to the target site. Once they reach the target protein they bind to them and disturb metabolic processes in plants by disrupting biosynthetic pathways and damaging cell structures by generating cytotoxic molecules that ultimately kill the plants. In this, the first step is penetration of herbicide into the plant system.

Effectiveness of spray mixtures can be increased by addition of adjuvants. Weed Science Society of America (WSSA1994) have defined adjuvant as a material in a herbicide formulation or added to the spray tank to modify herbicidal activity or application characteristics. Adjuvants enhance activity of a herbicide in different ways viz., wetting, spreading, deposit building, emulsifying or deflocculating the active ingredient. In many cases cost of adjuvant will be less than that of active ingredient. In such cases it helps to reduce the cost of the final product.

A large number of herbicides are currently available in the market hence selection of suitable herbicide needs judicious understanding of the product and the requirement. When large number of chemical options are available it can make the process of selection a bit confusing. So it is important to know the crops in which a herbicide can be used, the weeds it will control, the appropriate rate, adjuvants included in the formulation. The different uses of the chemical and the different situations for which it will be useful. In addition to these it is important to understand the mode of action of the herbicide and also the mechanism of action of the chemical.

Herbicides are chemical substances that are capable of either killing or injuring plants and so used for elimination of unwanted plants. In Latin, the term ‘herba' means plant and ‘caedere’ means to kill. There are many reasons for the increased use of chemicals for weed control. Shortage and high cost of agricultural labour prevent economic control of weeds by manual and mechanical means. Benefits offered by herbicides include efficient weed control, higher crop yield, better soil, water and energy conservation and higher income.

Deliberate use of natural enemies to control invasive pest in an ecosystem is known as biocontrol. To control invasive weed species, selective pathogens and weed seed predators are employed to reduce the population of the weed to non competitive numbers rather than total eradication of the weed species (Appleby, 2005) These can be insects, herbivorous fish, other animals, disease causing organisms or even competitive plants. This method is comparatively safer to the ecosystem, is cheaper and has long lasting impact. Difficulty in f inding host specific bio-agent with minimum adverse effect on other crop and the environment is a challenge.

Weeds have been a problem to agriculture ever sine man started cultivation. Weed species by and large invade cropped areas and account for large economic losses to the farmer. Weeds are economically more important than insects, fungi or other pest organisms (Savary et al. 2000, 2006). Globally, weeds cause the highest potential loss to crop production (34%), with animal pests and pathogens being less important (losses of18% and 16% respectively). The loss in production due to weeds has been estimated as 5% in developed countries. It is around 10% in developing countries and 25% in least developed countries. (Oerke, 2006)

Weeds have specific characters which helps them to adapt to any stressful situation and successfully, compete with the crop. They have survival strategies which help them to overcome vagaries of nature like extreme cold, heat, drought, biotic stresses and soil abnormalities. Their most important characteristic is the ability to succeed in any adverse situation even in disturbed soils. The age old war between man and weeds makes it pertinent to understand the characteristics of weeds which make them better competitors in the field.

Weeds are diverse plant species of the ecosystem which can survive adverse condition and reproduce quickly. The global compendium of plants has listed 28000 species as weeds. According to Holm et al (1977) about 8000 weeds species have been reported from agricultural fields in 124 countries and of these, 250 species are considered to be problematic. It is also to be noted that weeds from 12 families constitute 68% of the world’s worst weeds. Within these 12 families, weeds from poaceae, asteraceae and cyperaceae constitute 44% of the world’s worst weeds.

India is basically an agrarian economy where 57.8% of rural households are engaged in agriculture (Situation Assessment Survey of Agricultural Household, 2021). 48.9 per cent of the Indian work force is employed in the agricultural sector, (ILO, 2016). The estimated Indian population for the year 2050 is 1.7 billion which will raise our food demand to ∼400 million tonnes (Rao et al., 2018). In this context, Indian agricultural production system will have to take up the challenge to feed l7.5% of the global population with only 2.4% of land and 4% of the available water resources at its disposal.

Introduction

A geographical information system (GIS) is a kind of database that has software tools for handling, analyzing, and presenting spatial data and descriptions of phenomena that have a location component. This system can also involve human users and support staff, procedures and workflows, a body of knowledge about relevant concepts and methods, and institutional organizations in a wider sense. GIS technology is a key part of spatial data infrastructure, which the White House describes as “the policies, technologies, standards, human resources, and related activities that are necessary to acquire, process, distribute, use, maintain, and preserve spatial data.”

Introduction

We use our five senses to perceive the world around us. Some senses, like touch and taste, need contact with the objects. But we get most of our information about the environment through sight and hearing, which do not need close contact with the external objects. In scientific terms, we are doing remote- sensing all the time. Remote- sensing is the process of recording/observing/ perceiving (sensing) objects or events from a distance. Remote- sensing is a way of monitoring and detecting the features, usually physical, of a specific area by measuring its reflected and emitted radiation (usually from satellite or aircraft).

Introduction

Crop models can be broadly classified into two categories: dynamic or process-based crop simulation models (CSMs), and reduced form statistical models. Since simulation models are based on various plant-related processes, they develop or alter in tandem with plant growth (Chetty 2009); as a result, they are inherently nonlinear (Olmstead 2009). To run, calibrate, and validate, they require a significant amount of date input. However, statistical models are helpful in situations where there is a lack of data because they describe the relationships between a subset of variables while keeping the others constant. (Chetty 2009).

Introduction

Nanopesticides are pesticides that use nanomaterials or nanotechnology to improve their effectiveness and safety in agriculture. Nanomaterials are materials that have at least one dimension between 1 and 200 nm. Nanomaterials have different properties than their bulk counterparts, such as higher surface area, reactivity, and mobility. Nanopesticides can be formulated in various ways, such as nanosized active ingredients, molecular active ingredient nanocarrier complexes, or active ingredients encapsulated or coated by nanomaterials (Deka et al., 2021; Xu et al., 2022).

Introduction

Nanofertilizers are products of nanotechnology that are created or modified from conventional fertilizers, bulk fertilizer materials, or plant extracts. They use different methods such as chemical, physical, mechanical, or biological processes to produce nanosized particles that can enhance soil fertility, crop productivity, and quality (KhetiGaadi 2022). Nanofertilizers have a size range of 0.1–100 nm, which is similar to the size of plant cell wall (20 nm), making them easier to be absorbed by plants (Tiwari 2022).

Introduction

Nanotechnology is a scientific and technological field that manipulates matter at the nanoscale to create, design, characterize, and use structures, systems, and devices with novel properties (Sattler 2016). Nanoparticles are one of the most important products of nanotechnology, as they exhibit different features from their bulk counterparts due to their size and shape (Sabir et al., 2014). Nanoparticles have applications in various disciplines, such as materials science, medicine, agriculture, physics, and chemistry.

Introduction

Precision farming, also known as precision agriculture, prescription farming, and site-specific farming, is grounded on the principle of managing fields based on their heterogeneity (Nowak 2021). In the past, crop management decisions were made for the entire field, treating it as a homogenous unit, despite significant variations in soil characteristics, weed infestations, and plant growth within a field (Nowak 2021). Precision agriculture integrates modern technology with past experience to manage farming on a grid-by-grid basis (Nowak 2021).

Introduction

In order to cater to the nutritional needs of a rapidly growing population, it is imperative to increase food grain production on the same land while maintaining the soil’s productive capacity. This necessitates comprehensive research to establish a scientific foundation for enhancing and sustaining food production and soil productivity with minimal environmental impact (Rathore et al., 2010). Balanced nutrition extends beyond the application of nitrogen, phosphorous, and potassium in specific quantities through fertilizers. It entails ensuring that the soil contains the right proportions of available nutrients to meet the crop’s requirements for optimal yield (Rathore et al., 2010).

Introduction

To address the escalating food demands of the global population, a transformation in the agricultural sector is imperative (Velten et al., 2015; Lampridi et al., 2019). The current overdependence on finite resources is leading to their overexploitation, largely due to irresponsible usage (Velten et al., 2015; Lampridi et al., 2019). By adopting a site-specific approach, farmers can apply inputs only where they are necessary in the field (Velten et al., 2015; Lampridi et al., 2019). This method can enhance output, decrease labor costs, and mitigate the environmental damage caused by excessive input use (Velten et al., 2015; Lampridi et al., 2019).

Introduction

Site-specific nutrient management (SSNM) is the dynamic, field-specific management of nutrients in a particular cropping season to optimize the supply and demand of nutrients according to their differences in cycling throughsoil–plantsystems(Sarkar etal.,2017).Thisnewmethodofnutrient recommendationsisprimarilybasedontheinitialnutrientstatus(INS)from thesoil andthecrop’sneedfornutrients toachieve thedesiredyield.

Introduction

Agriculture is a vital sector in the world economy, as it helps to reduce poverty and promote sustainable development, especially in developing countries. However, agriculture also faces challenges such as increasing productivity and reducing environmental impacts. Therefore, new technologies and methods are needed to improve agricultural practices. One of these methods is precision agriculture (PA), which is based on the principle of sustainable agriculture and healthy food production. PA is a science that uses high technology sensors and analysis tools to improve crop yields and support management decisions. PA is a new concept that aims to increase production, reduce labor time, and optimize the management of fertilizers and irrigation processes.

Introduction

Crop discrimination is the process of using remote-sensing technologies to identify and characterize different types of crops based on their electromagnetic behavior at different wavelengths. Each crop has a unique spectral signature that reflects its response to the incident radiation. However, the spectral signature can also vary depending on the season, the angle of the sensor, crop’s features, illumination intensity, weather phenomenon, and topography among other external factors (Parida et al., 2023).

Introduction

A thematic layer is defined as a layer with a set of logical feature data placed under single theme such as soil type, pH level, salinity, and water table. The features in these layers determine real world objects and are created using geometries such as points, lines and polygons (Tickoo 2017). Thematic layering is the spatial representation of analyzed data of elements that belong to the same type. Thematic maps are used to create these layers, which show how one or more specific data themes vary across different geographic areas.

Introduction

Spectral signature: A spectral signature is the unique pattern of reflection and emission of a target at different wavelengths. This difference helps to classify remote sensing images based on the spectral signatures of different objects.

Electromagnetic (EM) spectrum: The EM spectrum is the range of all types of EM radiation. Some examples are visible light from a lamp, radio waves from a radio station, microwaves, infrared light, ultraviolet light, X-rays, and gamma rays.

Spectral response patterns: A spectral response pattern is the amount of energy that an object reflects or emits at different wavelengths. It shows how the object interacts with the EM radiation.

Introduction

Global Positioning System (GPS) is a system of satellites and ground stations that provide location and time information for any place on earth, regardless of the weather. GPS is a type of GNSS, which stands for global navigation satellite systems. GPS has many applications in precision farming, such as farm planning, field mapping, soil sampling, tractor guidance, crop guidance, variable- rate applications (VRAs) and yield mapping. GPS helps farmers work in low- visibility conditions such as rain, dust, fog, and darkness. India has its own GPS system called IRNSS or NavIC, which uses about seven satellites. GPS is owned and operated by the U.S. government, specifically the U.S.

Introduction

This chapter gives an account of a summary of the significant findings of the study, followed by tenability of hypotheses, suggestions, further areas of research in the related areas, and a conclusion. The present study investigated the Quality of Work Life (QWL) of Library and Information Science (LIS) professionals working in Kerala’s eight prominent state universities. The data of the study were collected from the two hundred and sixty-six 266 regular qualified LIS professionals. 

This chapter presents the analysis and interpretation of data gathered through a structured questionnaire to conduct the current study. Data analysis and interpretation of data is the most significant part of the research report. It contains a detailed analysis of major results about the information for arriving at a valid conclusion. It helps to interpret the results of the study in a proper perspective. Based on the objectives and hypotheses formulated, the data was collected through a questionnaire. Likert’s scale was used to assess the opinions of the respondents. 

Introduction

Libraries are a center of information for the academic community of the universities in Kerala. It acts as a gateway to global knowledge. Libraries provide seamless access to the information that supports teaching, learning research, and extension. It also ensures fair access to knowledge in the academic community. The libraries fulfill the objectives of their parent organization. It caters to the educational needs of students, researchers, and faculty/Scientists of the universities for study, research, teaching, and extension activities.

Introduction

Quality of Work Life (QWL) is a popular concept among the organizations. Work is an essential part of everyday human life. Work influences the overall quality of life. Human resources are one of the main assets of any organization. Quality of work life (QWL) is one of the important subsystems of human resource management. There are economic, social, psychological and organizational aspects of work life. Many new subsystems are being added to human resource management with employees’ changing needs, culture, expectations, and work environment.

Introduction

It has been proved that libraries play a crucial role in education. Libraries have been collecting, preserving, and organizing knowledge since time immemorial. In the age of virtual information, libraries have been reinventing themselves as accessible and engaging learning spaces. Libraries existed in India during the ancient and medieval periods. The library is the primary requirement of the university. University libraries have a paramount role in developing university education in the country. The present chapter highlights the historical development of libraries, committees, and commissions on university libraries in India.

Introduction

This chapter reviews literature related to the current study on Quality of Work Life (QWL). Scrutiny of the available literature is of great value in gaining insight into the research problem. It is beneficial for strengthening the research problem. As there are fewer studies on QWL in the university libraries in Kerala, the works reported in other places were also reviewed. Hence, the available studies related to the topic are exhaustively reviewed. The review covers studies on the subject made at the regional, national, and international levels.

Introduction

Human beings are the most critical components of an organization. The organization’s survival has improved all the facets contributing to its success. In a competitive world, human resources are sine qua non in an organization. Quality of work life (QWL) is critical for deciding organizational employee- related outcomes. Human resource management has a unique role in any organization. Organizational goals in an organization are achieved through planning, organization, staffing, direction, coordination, and control. 

1. Introduction

Technology innovation is characterised by the development and utilisation of novel or enhanced technologies, instruments, frameworks, and procedures that result in noteworthy progressions or discoveries across diverse domains. It entails utilising resources, knowledge, and experience to create creative solutions that address issues, boost productivity, advance the cause, and add value.

In numerous crucial areas, the significance of technological innovation is evident: