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Insecticides are one of the key control measures to combat the insect pests for sustainable agricultural production in the world. Synthetic insecticides have been only strategy to control the resurgent and resistant insect population in of high value crops not only in India but also in the world. The advent of synthetic insecticides in the mid-20th century made the control of insect and other arthropod pests easy and much more effective, and such chemicals remain essential in modern agriculture despite their environmental issues.

INTRODUCTION

Insecticide resistance poses a severe threat to agricultural productivity in India and in other countries of the world. Humans have had the ingenuity to develop thousands of pesticides to protect foodstuffs, livestock, and health and the use of these poisons has triggered a rapid evolutionary response in many target species and some nontarget species of invertebrates, microorganisms, higher plants and vertebrates. Insecticide exposure led to nullify their toxic effects through genetic selection for individuals with the biochemistry or behaviour. Continual development of new compounds and its greater use and increase in input insecticide cost is mainly due increase in resistance. Reduction in insecticide efficacy from insect resistance has major economic, environmental and human health implications. Integrated Pest Management (IPM) is a convenient descriptor for wide range of still-evaluating pest control program that emerged from chemical prophylaxis practiced. IPM theory has fostered a transition from primarily chemical control to programs tempered with biological information and input tailored to each agro ecosystem, crop and pest situation in production.

Insecticide resistance to both fumigants and contact insecticides is an increasing problem in controlling stored grain and grain product insects throughout the world (Table 14.1). Hence, persons engaged in food commodity storage and preservation world over are concerned about the resistance of stored product insects to contact insecticides and fumigants. It is, therefore, necessary to work out strategies to delay or minimize the probability of resistance evolution. Resistance to pesticides is the ability of a strain of insects to tolerate doses of toxicants which would prove lethal to a normal population of insects of the same species. Resistance results when occasional resistant individuals arise in a population and survive the pesticidal treatment. These survivors then reproduce and confer the resistance to their offspring in succeeding generations. Resistance is the ability of a population (of insects) to survive a dose (of insecticide) that would normally kill 100 per cent of a susceptible population. Insecticide resistance is a dynamic phenomenon dependent on biochemical, physiological, genetic and ecological factors.

The chances of development of insecticide resistance in stored grain insect pest are more because of their life style, i.e., to remain confined in limited area. This results in more common inbreeding of the homozygous resistant strain resulting into homozygous resistant progeny. At the same time their management, once detected, can be easily achieved with the application of sufficiently acceptable sufficiently higher dose of the most appropriate insecticide to eliminate all the resistant survivors

The insect pest of stored grains can be conveniently divided into two groups, i.e., coleopterous and lepidopterous, therefore, the subject on these two groups has been pooled accordingly.

Medicines used for controlling insect pests are known as Pesicides which have assumed great importance in today’s high yielding and intensive agricultural system as well as public health programme, all over the world. The term pesticide is an all-inclusive word meaning killer of pests and includes substances used for controlling, preventing, destroying, repelling or mitigating any pest.

Insecticide mode of action is divided in to four major chapters 1. Nerve & Muscle 2. Growth & development 3. Respiration & Energy production 4. Metabolic process 5. Unknown or Non-Specific (multisite inhibitors) (Source: IRAC). To understand the mode of action of insecticides, it is necessary to understand the function of nervous system and how it works in insect. The nervous system functions transmits information throughout the body. This system has three components: 1) Peripheral nervous system (PNS) to receive and transmit incoming signals (taste, smell, sight, sound, and touch) and to transmit outgoing signals to the muscles and other organs, effectively communicating them how to respond, and 2) Central nervous system (CNS) to interpret the signals and coordinate the body’s responses and movements. 3) Visceral or sympathetic nervous system (VNS) directly connected with the brain that supplies nerves to the anterior part of the alimentary canal (foregut and midgut), heart, and spiracles. Some additional nerves arise from posterior compound ganglion of ventral nerve cord (VNC) which supply nerves to the posterior part of gut and reproductive system.

Insecticide resistance is a growing concern for those who need insecticides for medical, veterinary, and agricultural control of insect pests. In response to the introduction of DDT resistance in 1947, the incidence of resistance has increased annually by an alarming amount. Resistance is “the inherited ability of a strain of some organism to survive doses of a toxicant that would kill the majority of individuals in a normal population of the same species” (WHO, 1957).

As a result of continued insecticide application, the proportion of resistant insects increases compared to that of susceptible and the population becomes increasingly difficult to control

Above photograph theoretical example illustrating the increase of insecticide resistance levels in a pest population. Some individuals (black) with genetic traits allowing them to survive insecticide applications can reproduce; if the selection pressure is frequent, they easily become the preponderant part of the population (Fig. 1).

An adaptation to a pesticide leads to reduced susceptibility to it among the pest population targeted by that pesticide. In nature, pests develop resistance to chemicals through natural selection. In the most resistant organisms, their genetic traits are passed on to their descendants. Since 1945, at least 500 species of pests have developed resistance to pesticides (Anonymous, 2007), but other sources estimate as many as 1000 species (Miller, 2004).

General Aspects About Insects

‘Insects’ are almost ubiquitous. They are found all over the world, in the icy regions of the poles, deserts, forests, mountain peaks, oceans and even in oil wells. They can adopt themselves to any climatic conditions and can live in any habitat where food is available. Insects are mostly small, air-breathing organisms of the animal world. Most of the insects live freely in nature. Many species are wild and harmless to human beings. Many are beneficial because of their role in the ecosystem. Some are a part of the food chains of wild creatures, while others through predation and parasitism hold in check many other species of insects. Insects also play a vital role in pollination. Relatively only a few species are harmful to man and are his chief competitor on earth.

At present, food and nutrition security are the prime aspects which need to be addressed in an efficient way. It has been projected that by 2050 the global population will reach 9.2 billion which in turn enhances annual demand for agricultural products by 1.1 per cent from 2005 to 2050 (McKenzie and Williams 2015).

As we draw the threads of “Droughts through the Ages” together, we are left with a profound understanding of the cyclical yet evolving nature of drought. From the earliest whispers of human history to the stark realities of our modern world, the absence of life-sustaining water has cast a long shadow, shaping civilizations, sparking innovation, and at times, triggering societal upheaval. This book has journeyed through millennia, examining the historical accounts, scientific understandings, and societal responses to these arid interludes. Yet, the true value of this historical lens lies not merely in recounting the past, but in illuminating a path towards a more resilient future. • The preceding chapters have underscored several crucial insights. We have witnessed the devastating impacts of prolonged dry spells on ancient empires, the ingenuity displayed in developing early irrigation systems, and the growing scientific understanding of the complex interplay between atmospheric conditions, land surface processes, and human activities in driving

Millets categorized as cereal crops are rich sources of nutrients, mostly cultivated across arid and semiarid areas of the world, specifically in southeast Asia and Africa. Millets are easy to cultivate, demands minimal field input and have appreciable market values. Despite of great value of millets, their production is limited mainly because of climate change which triggers multiple abiotic stresses like drought, high temperature, salinity, etc. Even though millets can withstand the majority of abiotic stresses, it necessitates their further improvement to develop more resilience against unprecedented effects of climate change by incorporating or enhancing stress tolerance characteristics. It is currently not attainable to create stress tolerant and high yielding varieties through conventional breeding techniques and thus modern approaches like genome editing become inevitable to achieve this goal. Also, available data for genome sequences of millets in these years promotes genome editing. The technique has drawn tremendous attention recently due to its potential in precise modification of alleles and is considerable to speed-up crop breeding by targeting important traits with precision. Additionally, many stress-resistant genes are identified in related monocots and are reported to be orthologs of millets which could assist genome editing for developing stress resilience and productivity in millets. Above all, the technique has also gained legal acceptance and has potential to revolutionary counter climatic challenges.

1. Introduction

Have you ever dreamt of exploring an entirely different realm? Envision a place where an alternate version of yourself can freely roam and pursue various activities without the constraints of reality. In this realm, you can engage in work, socialize, acquire possessions, conduct transactions, embark on novel experiences, and revel in unprecedented adventures. Now, imagine that major technology companies are actively developing this virtual world to make it a tangible part of your life. The once fantastical concept of the Metaverse is now poised to become the next major innovation(Jung et al., 2024). It is widely acknowledged by scholars and researchers that the Metaverse is an idea of technology that attracts itself as a three-dimensional monotony of the Internet. Moreover, as noted earlier, definitions of the metaverse in existing literature and among professionals reflect the integration of physical objects in virtual space as a consumable description of the metaverse great role(Dwivedi et al., 2022). The key to any Metaverse technology is their user experience. Analysis of Metaverse applications shows that most current applications are stand-alone or centralized. These applications provide different user experiences, based on the cardinal technology and interface devices used to communicate within virtual environments.2

Abstract

Anoxygenic phototrophic bacteria (APB) are having the genetic potential of converting radiant energy into chemical energy useful for growth and metabolic activities without evolving oxygen. They are physiologically, metabolically and phylogenetically versatile group of organism spread in five distinct phyla; Proteobacteria (purple bacteria), Chlorobi (green-sulfur bacteria), Chloroflexi (green non-sulfur bacteria), Fir micutes (heliobacteria) and Acidobacteria. Different group of APB harbors distinct photosynthetic pigments, carotenoids, and a photosynthetic reaction center. These group of bacteria succeeds in a natural environment with light availability and presence of anoxic conditions as the pigment, and the molecular oxygen inhibits bacteriochlorophyll synthesis whereas few APB can grow in hypooxic as well as in aerobic conditions. Calvin-Benson-Bassham (CBB) pathway, reverse tricarboxylic acid (rTCA) cycle, and hydroxypropionate cycle are reported pathways for carbon assimilation in APB to fix carbon dioxide. Photosynthesis occurs in either intracytoplasmic membrane (ICM) or membrane bound chlorosomes and in the cytoplasm for few APB. APB have a wide range of potential applications including removal of H₂S from wastewater and gas streams, hydrogen production, degradation of xenobiotic, toxic metals and radioisotopes, work as host for the production of challenging membrane proteins, source of carotenoids and terpenoids, single cell protein, extensive applications in agriculture and production of bioactive compounds with antimicrobial, antioxidant and anticancer activity. The chapter is focused on the diversity of different types of APB, habitats, their growth requirements, photosynthetic machinery and biotechnological applications of APB.

Introduction

Millets, which are small-seeded grasses belonging to the Poaceae family, have a rich historical and cultural significance as they have been cultivated for thousands of years (Goron and Raizada, 2015; Wen et al., 2014; Cheng, 2018). They remain an important crop in various regions worldwide, particularly in developing countries where they serve as a staple food for millions, especially in rural areas. Millets offer several advantages as they are gluten free and provide valuable protein, fiber, and minerals, making them highly nutritious for both human consumption and animal feed. The diverse range of millets includes pearl millet (Cenchrus americanus (L.) Morrone), foxtail millet (Setaria italica (L.) P.Beauv.), proso millet (Panicum dichotomiflorum Michx.; syn. Panicum miliaceum Walter), finger millet (Eleusine coracana (L.) Gaertn.), barnyard millet (Echinochloa frumentacea Link), kodo millet (Paspalum scrobiculatum L.), little millet (Panicum sumatrense Roth), and more (Ahmad et al., 2018; Bora et al., 2019). These grains have a significant historical presence globally, with evidence of cultivation in ancient China, Greece, and Rome (Li et al., 2020a; Huan et al., 2022). In India, millets have maintained their importance as a vital crop for thousands of years and continue to be an integral part of the diet in many regions of the country today (Padulosi et al., 2015; Li et al., 2020b).

Introduction

Groundwater resources are under stress globally due to various reasons including increasing water demand, impending climate change, industrialization, land use/land cover changes, etc. Adequate sustainable development strategies have to be adopted for the management of groundwater resources. Irrespective of the developmental status of countries all over the world, groundwater serves as a crucial resource for meeting fundamental needs. However, increasing population, water demand, surface water contamination, and recent patterns of climate unpredictability have caused increasing reliance on groundwater as reported by several researchers (Adimalla and Taloor 2020; Aladejana et al. 2020; Cuthbert et al. 2019; Green 2016; Hamed et al. 2018; Jasrotia et al. 2019; Khalaj et al. 2019; Li 2016; McGill et al. 2019; Morsy et al. 2017; Taloor et al. 2020).

Even in India, water scarcity has been reported in many parts, though the country receives relatively higher rainfall. However, the rainfall pattern has changed over the last few years. The country has been experiencing significant spatiotemporal changes in rainfall patterns, leading to fewer rainy days and more extreme rainfall, which many studies have attributed to global climate change and anthropogenic influences. The rainfall variability has substantial impacts on water availability, agricultural productivity, and welfare of the 1.2 billion people in India because agriculture in India feeds about 17.2% of the global population and more than 56% of the agricultural land is rain-fed. Rapid and heavy patterns of rainfall result in the draining of most of the rainfall as surface runoff particularly on higher slopes, and reaches the surface water bodies, thereby reducing the infiltration and subsequent groundwater recharge. These variations in rainfall have ultimately affected the groundwater behavior and availability in many river basins.

Insolation is a term that might sound abstract but is fundamentally the driving force behind nearly all physical processes on Earth, including those within our precious aquatic environments. In this chapter, we will unravel the journey of solar energy from the vast expanse of space to the surfaces of our oceans, lakes, and rivers, and understand its profound influence on the life within. For you, as future professionals in fisheries and aquaculture, grasping the concept of insolation is paramount. The amount of solar radiation reaching a water body dictates its surface temperature, influences the rate of photosynthesis by aquatic plants and algae (the base of many aquatic food webs), affects water stratification, and even plays a role in phenomena like ice formation and melting. Think about it: the warmth of a lake on a sunny day, the intensity of light penetrating the surface waters, the seasonal changes in algal blooms – all are directly linked to the amount and intensity of solar radiation received. Understanding insolation allows us to begin to explain why some aquatic environments are more productive than others, why water temperatures vary geographically and seasonally, and how changes in solar energy input (whether natural or human-induced) can ripple through entire aquatic ecosystems.
In this chapter, we will delve into
• What insolation is: Defining the term and understanding its measurement.
• Factors affecting insolation: Exploring how latitude, time of year, time of day, and atmospheric conditions (like clouds) influence the amount of solar radiation reaching the Earth’s surface and water bodies.
• The fate of insolation upon reaching water: Examining how solar energy is absorbed, reflected, and transmitted within aquatic environments.

Inability to go to sleep or to get sleep for a period insufficient for the needs of an individual is known as insomnia. Chronic inability to sleep.

None of us can do without sleep. An infant sleeps 14 to 18 hours a day. This period is slowly reduced. An adult may be happy with 7 to 8 hours of sleep every night. There are people who require 5 hours or even 4 hours of sleep in 24 hours.

Sleep has a definite purpose and that is why all mammals sleep. Lack of sleep apparently does not cause any physical harm. But anyone who gets less than his normal sleep experiences a decrease of efficiency and concentration.

Since meteorology and climatology are primarily observational sciences, adequate care has to be taken for getting most representative and accurate observations of weather parameters for their efficient application. This depends on site of observatory, maintenance of observatory, accuracy of instruments, timely measurements of weather parameters, knowledge and responsibility of the observer.

Monitoring of weather conditions, in a country like India, which is climatologically so diverse because of its unique geographical situation is a challenging task. It is done through a large network of observatories of different types. India Meteorological Department (IMD), Pune, is entrusted with the collection and keeping the record of weather data collected from different stations and also to train the man power in this specialized area. Weather stations installed in different parts of the country are of different types.

This chapter serves as an essential primer on R, providing step-by-step instructions for installing both R and RStudio, one of the most popular integrated development environments (IDEs) for R. Additionally, the chapter covers important aspects such as importing data into R and setting the working directory.

Install R and RStudio

R and RStudio can be installed on Windows, MAC OSX, and Linux platforms. RStudio (the IDE of R) offers a code editor, a unified console, and a suite of visualization tools. It simplifies the use of R, making it more accessible and efficient for data analysis and statistical computing tasks.

Steps to install R and RStudio

1. R can be downloaded and installed from the Comprehensive R Archive

Network (CRAN) webpage (http://cran.r-project.org/).

2. After installing R software, install the RStudio software available at:

http://www.rstudio.com/products/RStudio/.

3. Launch RStudio and start using R inside R studio.

About the Lower Bhavani Project

The Lower Bhavani Project (LBP) is located in Tamil Nadu in Bhavani River, irrigates 83980 ha in two seasons in a year. The canal water supply is provided for one wet crop from August to December (41885 ha) and one dry crop from January to April (41885 ha). The cultivated area under LBP in Erode and Coimbatore districts are irrigated lands with canals and groundwater, and rainfed crop lands (with supplemental groundwater irrigation).

Installing audio recording equipment on a desktop computer requires a sound card setup and proper equipment configuration for effective audio capture and playback. This chapter covers the essentials of setting up an audio recording environment, focusing on sound card installation, microphone setup, and configuration of other essential audio equipment for achieving professionalquality recordings.
Overview of Sound Cards in Audio Recording
Sound cards, also known as audio interfaces, play a crucial role in audio recording by converting analog audio signals into digital data for the computer and vice versa. They also manage audio input and output and allow the computer to communicate effectively with microphones, speakers, and other audio equipment.