eChapters

Introduction

The huge nutritious potential of agricultural based byproducts has generated an interest of nutritionist for utilizing them in efficient ways in order to improve the production of animals. In this concern, solid state fermentation (SSF) is a promising and novel technique. The lignocellulosic structural characters of plant residues provide them a solid support and act as substrates for the microbial fermentation to produce certain value added products through SSF. The scope of SSF in the field of animal nutrition is wide, in terms for the production of enzymes, bioactive components, organic acids, vitamins, and feed additives, bio-transforming products, biological degradation and detoxification of agricultural residues/wastes. 

Introduction

One of the major problems being faced by cities and towns relate to management of municipal solid waste (MSW). Waste quantities are increasing day by day due to the increasing population and the municipal authorities are not able to upgrade or scale up the facilities required for proper management of such wastes. In many cities and towns, garbage is littered on roads and foot-paths. Citizens are also not accustomed to use the available storage facilities (dust bins) set up by the authorities. At large, lack of organized system of house- to-house collection of waste has created the littering habits. By and large, hardly we can see any city/town complying with the Municipal Solid Wastes (Management and Handling) Rules, 2000 in ‘totality”. As per information provided by Central Pollution Control Board (CPCB), 1,27,486 TPD (Tons per day) municipal solid waste was generated in the country during 2011-12. Out of which, 89,334 TPD (70%) of MSW is collected and 15,881 TPD (12.45%) is processed or treated.

In spite of various measures taken towards the proper waste collection, segregation and disposal, proper waste processing units were established as per the following details as per CPCB. The waste processing technologies reported in the country are; composting, vermi composting, biogas plant, RDF- pelletisation and others. Some of the sepelletization plants are associated with power plants for generation of electricity. However, mechanical composting and vermi composting are more popular in the country.

Waste is not actually waste but is the by-product of various activities of human life. The unclean handling of these wastes creates problem for public health departments and local bodies. The classification of waste depends on the agencies that classify these wastes according to the area of interest and method of disposal viz. medical field, agricultural field, local bodies, industries etc.

In the present paper, the emphasis is given to the classification based on agricultural activities which includes a) Agricultural marketing waste b) Meat and fish marketing waste.

3.1. SOLID WASTE MANAGEMENT

Solid waste management includes the transportation, processing, recycling and disposal of our waste materials. We live in a disposable world in many ways with the modernization and convenience of our world we have cluttered it with our refuse.

Overview
Humanity has produced trash since the beginning of time, whether it is from the bones and other parts of the animals they kill for food or the wood they harvest to build their carts. As civilization developed, garbage was produced that was increasingly sophisticated in character. The world of consumers emerged around the close of the 19thcentury as a result of the industrial revolution. The production of non-biodegradable solid waste led to an increase in pollution not just in the air but also on Earth itself. The rise in solid waste was also primarily caused by urbanization and population growth.
Definition of Solid Waste
Glass crockery containers, plastic containers, sludge, vehicle parts, and mounds of crop wastes are among the solid waste materials. These gather in public areas and hinder people’s regular activities.
Every family produces waste or rubbish on a daily basis. We usually toss away items that we no longer need or have any use for, which puts them in the garbage category. Depending on where it comes from, solid waste can take several forms. Understanding the proper ways to handle the trash produced has become crucial in today’s dirty world. One crucial technique for managing municipal solid waste is segregation. Representation provides a good understanding of segregation at source. Composting is a crucial waste management and treatment technique.

Solid wastes are all the wastes arising from human and animal activities, that are normally solid and that are discarded as useless or unwanted materials. It consists of the highly heterogeneous mass of discarded materials from the urban community as well as the more homogenous accumulation of agricultural, industrial and mining waste.

Urbanization, industrialization, and economic growth in India have all led to an increase in the generation of municipal solid waste (MSW) by a number of urban local bodies (ULBs). In cities with high population densities, SWM is a significant difficulty. Being a diverse country with a wide range of religious communities, customs, and traditions like India makes it more challenging to accomplish sustainable development in a country that is rapidly industrialising and improving its standard of living. Although there have been substantial changes in the social, economic, and environmental spheres, India’s SWM systems have mostly remained the same. Currently, 90% of residual waste is thrown in the informal sector rather than properly disposed of. To make SWM more sustainable, new management practises and disposal sites are needed. The inefficiency of the current waste management systems has a detrimental effect on the economy, the environment, and public health. The Ministry of Environment and Forests of India introduced regulations for garbage treatment, although there is irregular and insufficient compliance.

Solid wastes, the unavoidable consequences of civilization, are the useless and unwanted heterogeneous solid materials discarded by human being. Human greed is the major factor in creation of unwanted solid wastes. With increase in human population and its demands, there is an increase in production of various types of wastes. When human being did not come to the earth there was very little wastes like tree leaves, animal excreta or dead parts which nature used to digest and produces something beautiful every time. Still there are certain remote areas free from wastes where human being could not reach due to inaccessible condition of terrain, forests and islands. Now–a-days wastes are found even in the top of Mt. Everest or in the interior of Antarctica.

Solidago, commonly known as goldenrod, is an attractive filler-type cut flower valued for its bright yellow inflorescences and commercial potential. This chapter discusses its origin, taxonomy, botanical characteristics, genetics, varieties and environmental requirements. It explains seed propagation for breeding and vegetative propagation through rhizome suckers for commercial multiplication. Climate, soil, planting, nutrition, irrigation and cultural management are described, followed by pest and disease control. Harvesting, postharvest handling, grading, vase life and yield are also addressed. The chapter highlights commercially important cultivars and the crop's suitability for professional cut flower production and export markets.

Principle

Dried milled samples are extracted successively with diethyl ether, 0.5 percent ammonium oxalate solution, NH₂SO₄ and 72 percent sulphuric acid. Soluble carbohydrate in the ammonium oxalate extract determined with anthrone and hydrolysed pentosans and hexosans in the combined N H₂SO₄. Seventy two percent sulphuric acid extract are determined with aniline acetate and chromotropic acid respectively. The method gives a maximum variation of 4 percent from the mean of duplicates with each carbohydrate component. The residual material is ashed to obtain crude lignin and a nitrogen correction applied.

Soluble carbohydrate - this group, which includes sugars, oligosaccharides, and the fructosans of grasses, provides a source of nutrients  readily available to livestock.

Principle

Dried milled samples are extracted successively with diethyl ether, 0.5 percent ammonium oxalate solution, NH₂SO₄ and 72 percent sulphuric acid. Soluble carbohydrate in the ammonium oxalate extract determined with anthrone and hydrolysed pentosans and hexosans in the combined N H₂SO₄. Seventy two percent sulphuric acid extract are determined with aniline acetate and chromotropic acid respectively. The method gives a maximum variation of 4 percent from the mean of duplicates with each carbohydrate component. The residual material is ashed to obtain crude lignin and a nitrogen correction applied.

Soluble carbohydrate - this group, which includes sugars, oligosaccharides, and the fructosans of grasses, provides a source of nutrients  readily available to livestock.

I. Definition

Solute transport in plants, translocation, primarily occurs in the phloem, but it can occur in the xylem.

II. Solute Transport in the Xylem

Some solutes are transported in the xylem

Water and dissolved ions are the main substances in vessels/tracheids

These materials are transported via transpiration stream

Xylem sap may also contain organic materials, usually in relatively low concentration (with a notable exception being maple sap in the spring which is comprised of 2% or more sucrose).

Substances move at different rates depending on matrix effects, metabolic needs, etc.

Standard solution: Standard solution is defined as a solution whose strength is known. e.g. 1 N solution.

Molar solution: Molar solution can be defined as a solution containing the number of moles of a solute (substance) i.e. molecular weight in gram per litre of the solution. e g. Mol. wt. of NaCl 23+35.5 58.5,

So 58.5 g NaCl per 941.5 ml of water= 1 M NaCI solution. Molarity is generally designated by M.

Molal solution: Number of moles of a substance/solute per litre of solvent makes a molal solution. Mobility is generally designated by m.

Percent Solutions

There are three types of percent solutions. All are parts of solute per 100 total parts of solution. Based on the following definitions you may calculate the concentration of a solution or calculate how to make up a specific concentration

    1.    % W/W - Percent of weight of solute in the total weight of the solution. Percent here is the number of grams of solute in 100 grams of solution. 
        Example: 
        A 100% (W/W) NaCl solution is made by weighing 100 g NaCl and dissolving in 100 g of solution

    2.    % W/V - Percent of weight of solution in the total volume of solution. Percent here is the number of grams of solute in 100 ml of solution. This is probably the least significant way of naming a solution, but the most common way of doing it. In fact, any percent solution not stipulated as W/W, W/V, or V/V is assumed to be % W/V. 
        Example : A 4% (W/V) NaCl solution is 4 g of NaCl in 100 ml of solution.

    3.    % V/V - Percent of volume of solute in the total volume of solution %V/V. Percent here is the number of milliliters of solute in 100 ml of solution. 
        Example: A 10% (V/V) ethanol solution is 10 ml of ethanol in 100 ml of solution; unless otherwise stated, water is the solvent. 

Solvent extraction is mainly used to remove dissolved substances from solutions or soluble material from solids /powders/ solid mixtures. Solvent extraction is explained using distribution law or partition law. The law states that if to a system of two liquid layers made up of two immiscible liquids/ slightly miscible liquids is added a third substance soluble in both layers , then the substance distributes itself between the two layers so that the ratio of concentration in one solvent to the concentration in the second solvent remains constant at a constant temperature.

India has witnessed a phenomenal increase in foodgrains production since Independence and from a food deficit state producing about 51 million tons in 195051 it become food surplus country with a record harvest of more than 250 million tons in 201112. This particular year also saw a remarkable record production of pulses at about 18.1 million tons. However, to meet the increasing demand of the continuously rising population about 23 million tons of pulses have to be imported every year costing the country about Rs.3000 crores in foreign exchange. Despite the changes in the dietary habits in which the large middle class has moved away from traditional cereals towards high value dairy, meat, fruits and vegetable products, pulses in India are still considered an important source of proteins, particularly for the poor. Pulses are not only an excellent source of protein (2040%), carbohydrates (5060%) and minerals (24%) but also provide calories almost equal to that of cereals energy to the tune of 300 to 540 Kcal/ 100g (Ofuya and Akhidue, 2005). Thus, pulses play an important role in achieving food and nutritional security for small and marginal farmers. However, the per capita availability of pulses has been declining over the time – it has declined from 60.7 gm/ day in 1951 to about 32 gm/day in 2010 – mainly due to stagnant production (except in recent years), rising demand for consumption and other uses. Pulses not only are used for consumption, but also play an even greater role in maintaining and enhancing soil fertility through nitrogen (N₂) fixation. Though the estimates of Nfixed by pulses depends on crop species, soil type, agroclimatic zone and crop management practices, it was reported that early, medium and long duration pigeonpea varieties fix 7, 55 and 69 kg/ ha¹, respectively, in Vertisols of Patancheru (Kumar Rao and Dart, 1987). Pulses ^N2 are grown not only as sole crops but also as intercrops and the biological nitrogen fixation (BNF) of pulses substantially benefits the associated or succeeding crops in terms of nitrogen contribution (1668 kg/ N₂ ha¹ for succeeding cereals). Thus on a conservative estimate, the BNF (@46 kg/N₂ ha¹) by pulses, excluding the intercrop area, alone amounts to 1.06 million tons annually.

I. FILL UPS

1. Somatic embryo encased with artificial endosperm and protective cover is called _____.
2. The term artificial seed was coined by_____.
3. The artificial seed technology was patented by_____.
4. The most common gelling agent used for artificial seeds is_____.
5. In desiccated system, the artificial seeds are coated with _____.

ABSTRACT

Immature zygotic embryos were isolated from field grown papaya fruits harvested at 90-105 d post-anthesis. The embryos were placed on half-strength Murashige Skoog (MS) medium supplemented with 2, 4-D (2.0 mg l^-1) and cultured under dark for a period of 2 months. The frequency of callus formation was around 66%. After 2 months, calli were transferred onto a half-strength MS basal medium and cultured for 3 months with frequent subculturing (once in 3 wk) on the same medium. The frequency of somatic embryo formation was around 36.6%. The somatic embryos on MS medium supplemented with BAP (0.4 mg l^-1) and NAA (0.02 mg l^-1) germinated and produced shoots. The emerging shoots of 2-3 cm height with 2-3 trilobed leaves were placed onto an MS basal liquid medium with IBA (1.0 mg l^-1) for root induction. The plants developed with shoots and roots were planted in a pot-mixture (sand:soil:FYM) containing VAM.

A. Somatic Embryogenesis
 
In plant tissue culture, the developmental pathway of various well organised, small embryoids resembling the zygotic embryos form the embryogenic potential somatic cell of callus tissue or cells of suspension cultures is known as somatic embryogenesis. The capability of somatic cell of a culture to produce embryoids is known as embryogenic potential.

Embryoid: Embryoid is a small, well organised structure comparable to the sexual embryo, which is produced in tissue culture of dividing embryogenic potential somatic cells.