eChapters

1.    Modern Packaging Systems
    1.1    Modified atmosphere packaging
    1.2    Active packaging-principles and applications
    1.3    Aseptic packaging
    1.4    Shrink packaging
    1.5    Vacuum packaging
    1.6    Thermal processing
    1.7     Retort pouch packaging
    
2.    Packaging of Fish and Fishery Products
    2.1    Packaging materials used
    
3.    Packaging Requirements for Fish and Fishery Products
    3.1    Packaging of fresh fish
    3.2     Packaging of processed seafoods
    
Suggested Reading

1.    Introduction
    
2.    Bacteria of Public Health Significance in Fish Handling
    
3.    Sanitary and Hygienic Precautions to be Followed in Fish Handling
    3.1    Requirements for the fishing vessels
    
4.    Requirements for the Landing Sites/Auction Centres
    
5.    Requirements for the Processing Centres
    5.1     Use only potable water or clean sea water for washing fish
    5.2     Never put fish on sand or any unclean surface
    5.3     Lighting and ventilation
    5.4     Water supply
    5.5     Ice
    5.6     Utensils for fish handling
    5.7     Washing of utensils and fish contact surfaces
    5.8     Workers’ hygiene and health
    5.9     Rodent control measures
    5.10     Fly control measures
    5.11     Waste disposal
    5.12     Storage of toxic substances
    5.13     Toilet facilities
    
Acknowledgement
    
References

1    Biological Hazards
    1.1    Bacterial hazards
    
2.     Fungal Hazards
    
3.    Viral Hazards
    3.1     Hepatitis A virus
    3.2       Norwalk virus
    
4.    Parasitic Hazards
    4.1     Parasitic worms
    4.2    Protozoan parasites
    
5.    Aquatic Biotoxins
    5.1    Paralytic shellfish poisoning (PSP)
    5.2    Diarrheic shellfish poisoning (DSP)
    5.3    Amnesic shellfish poisoning (ASP)
    5.4    Ciguatera fish poisoning (CFP)
    5.5     Puffer fish (Tetrodotoxic) poisoning (PFP)
    
6.    Pathogen Survival Through Cooking
    
References

1.    Introduction
    
2.    The Scenario in India
    
3.    The Concept of Hygiene in Indian Food Industry
    
4.    Food Safety- The Reality
    4.1      Food import inspection and certification
    4.2     Laboratories for export certification
    4.3      Food export inspection & certification
    
5.    What is HACCP? & What is in Practice?
    
6.    Where We Stand?

7.    Success of Application of Food Safety Management System
    7.1.    Pre-requisites for HACCP
    
8.    Logical Steps of HACCP
    8.1      Assemble HACCP team
    8.2     Describe product
    8.3     Identify intended use
    8.4     Construct flow diagram
    8.5     On site confirmation of flow diagram
    8.6     Principles of HACCP
    
9.    Conclusion
    
References
    
Further References

Index
    
About the Editors

1. Introduction

Afghanistan imperiled by decades of war, is  now a country on the rebound. With the days of relative peace up on the Afghan people, resources are being gathered and projects put onto place, in an effort to revitalize the previously stagnant economy. The rehabilitation of the agricultural economy in Afghanistan depends to a large extent on whether Afghanistan’s Agricultural Sector will be able to recover from the effects of war, serious consecutive droughts and a multitude of endemic crop/ livestock diseases. Afghanistan is a pastoral country with more than 85 per cent of the land area incapable of growing even a narrow range of crops, thus being largely rangeland.  Agriculture produces food, provides food security, enhances crop production, generates cash incomes for rural and urban populations, provides fuel and transport, and produces value added goods which can have multiplier effects and creates a need for services.  Furthermore, agricultural diversity production and income provide year-round employment, and spread risk. Livestock also form a major capital reserve of farming households.

1. Basic Information

Benin is situated in West Africa at inter-tropical zone between the parallels 6°30 and 12°30 North and the meridian lines 1° and 3°40 East. The Republic of Benin is limited in the north by the Republic of Niger and to the North-West by Burkina Faso, in the south by the Atlantic Ocean, in the west by Togo and in the east by the Federal Republic of Nigeria. The Republic of Benin extends over 700 km length from the Atlantic Ocean to river Niger. Its width varies from 125 km, along the coast, to 325 km, in the northern part. It covers an area of 112.622 km².

With the third General Census of the Population and Habitat in February 2002, Benin counted 6,769,914 inhabitants thereby giving an average density of 60.11 inhabitants per km². Currently the population is estimated to nearly 8 million inhabitants with a natural rate of increase of 2.8 per cent. The average densities estimated from the last census of the population vary between 16 inhabitants per km² in the department of Borgou and 322 inhabitants per km² in the department of Atlantic.

1. Basic Information on the Country and  Agricultural Status
 
1.1. Location of Côte d’Ivoire

Cote D’ivoire (Ivory Coast) is located in West Africa, between the Equator and the Tropic of Cancer, with an area of 3, 22,462 km². It is bordered on the north by Mali and Burkina Faso, no the west by Liberia and Guinea, on the east by Ghana and on the south by the Gulf of Guinea, stretching across nearly 550 km. The economic capital Abidjan is with a population of more than 3 million people and Yamoussoukro, the political capital, has more than 1,50,000 inhabitants.

1.2. Population 
The Ivorian population is 1,53,66,672 people in 1998, of which 26 per cent are foreigners (4,000,047), with an annual population growth rate of 3.3 per cent and a density of 48 habitants/km². 53.8 per cent of the population is under the age of 20 years. The age group between 21 and 60 years is 41 per cent. These figures show the youthfulness of the Ivorian population. The average life expectancy is 65 years.

1. Basic Information

1.1. Location and Size
 
Ghana, lying between latitudes 4º 30’ to 11ºN and longitudes 1º 10’E to 3º15’W, shares common borders in the east, north and west with the Republics of Togo, Burkina Faso, and Cote d’Ivoire respectively.  The country covers a total area (including water bodies) of 238,537 square kilometres.  

1.2. Climate
 
Ghana has a tropical climate with temperatures ranging between 21ºC and 32ºC. Mean annual rainfall in Ghana is generally lower in the northern part of the country (800-900 mm) and increases southwards (2100-2200 mm) albeit a small part of the eastern coastal belt has low mean annual rainfall of 700-800 mm. Humidity figures range from 78 to 87 per cent across the country. Although Ghana cannot be described as a mountainous country, there are a number of highlands and steep escarpments in the middle portion and some parts of the northern zone. The land is generally flat with more than half of the country at an altitude of 200 m.

1. Country Background

India is one of the oldest civilisations in the world with rich cultural heritage. India has become self-sufficient in agricultural production, and is now the tenth industrialised country in the world. It covers an area of 32,87,263 sq km. Lying entirely in the northern hemisphere, the mainland extends between latitudes 8°4' and 37°6' north, longitudes 68°7' and 97°25' east, and measures about 3,214 km from north to south between the extreme latitudes and about 2,933 km from east to west between the extreme longitudes. 
Agriculture is the mainstay of the Indian economy, as it constitutes the backbone of the rural livelihood security system. It is the core of planned economic development in India, as the trickle-down effect of agriculture is significant in reducing poverty and regional inequality in the country. Growth in agriculture has a maximum cascading impact on other sectors, leading to the spread of benefits over the entire economy and the largest segment of population. 141 million hectares is the net sown area, while 190 million hectares is the gross cropped area. The net irrigated area is 57 million hectares with a cropping intensity of 134 per cent. Eighty-two per cent of farmers have small and marginal land holdings.

1. Introduction

Iran, with an area of 1648 thousand sq.kms.,  is situated in the eastern portion of the northern hemisphere, in the south west of Asia, and is considered as one of the Middle East countries. Iran is a mountainous country with a variety of climates. The average temperature and rainfall for the whole country are quoted as 18ºC and 240 mm respectively (CAPES, 1996). The country is also organized into 28 provinces. Over the past two decades, rapid rate of population growth has been a major source of concern in Islamic Republic of Iran. The population of the country passed the 60 million figures in 1993 and is projected to reach 86 million by the year 2010. In fact, the Iranian population has doubled in this period (CAPES, 1996). For example, according to the 1991 census, the female population of 15 years and above was 15 million (Anonymous, 1998). However, thanks to considerable investments and well-organized and directed national population planning program, population growth rate is now 1.5 percent in the urban and two percent in the rural areas. At the national level, the figure is 1.65 percent (CAPES, 1996).

1. Basic Information and Agrarian Status

1.1. Geography

Japan is a crescent-shaped archipelago consisting of four main islands named Hokkaido, Honshu, Shikoku, and Kyushu, and of a few thousand small islands, with a total area of 3,77,907 square kilometers. The country is mountainous, with forests accounting for 66 per cent of the total area, and arable land 13 per cent.

1.2. Climate

The archipelago is almost 3,000 km in length and stretches from north to south, and  includes subartic, temperate and subtropical zones.

In winter, the side of the country facing the Sea of Japan, include Niigata and Fukui, is known worldwide for its heavy snowfall, but the side facing the Pacific Ocean has little or no snowfall. From spring to fall, there is no big difference between these areas. The summer season starts with an almost one month long baiu (rainy season) around June. After the baiu, the temperature rises to more than 30 degree Celsius, and it become very humid. In the fall, a few typhoons hit Japan, occasionally causing a major disaster.

1. Introduction

Jordan is an Arab country located in the heart of the Middle East. It is a highly centralized country in both political and economic terms, with a constitutional monarchy. The parliament consists of an upper-house appointed by the king and an elected lower-house. The king appoints the prime minister, who in turn, appoints a cabinet of ministers.

1.1. General Information

The country shares borders with Iraq to the east, Israel and the Palestinian Authority to the west, Syria to the north and Saudi Arabia to the south. In 2005, the population of Jordan was estimated at 5.5 million people with a population growth rate around 2.3 per cent, living in an area of about 89,300 sq. km. Most of the population is urbanized (82 per cent), with more than half living in the capital, Amman, and in the Zarqa governorate. About 60 per cent of the total population is under 25 and 38 per cent is under the age of 15 (United Nations, 2006). Jordan is classified as a lower-middle income country, with an economy that is severely affected by water scarcity and limited land resources. The capital Amman dominates over  80  per cent of the country’s economy.

1. Country Background

Mozambique is a country that is extremely dependent on agriculture, both for rural livelihoods and for overall economic growth. This importance is illustrated by the following:
    •    The agriculture sector accounts for about 20  per cent of GDP1.
    •    80  per cent of total employment and higher in rural areas.
    •    55  per cent of household incomes (national average) adding self-consumption and income from selling agricultural products2.
    •    40  per cent of export earnings (2003).
    •    The economy is not diversified and the average level of education is low, with few options for finding non-farm employment and incomes in rural zones.

1. Introduction to Nepal and its Agriculture

1.1. Geography

Nepal is a country of enormous geographical diversity, and is situated in the southern slopes of the central Himalayas, which spreads over an area of 1,47,181 square kilometers. Sandwiched between India on three sides- east, west, and south – and China to the North, Nepal is a land-locked country (CBS,2003).
 
Geographically, the country is broadly divided into five roughly parallel east-west regions (ecological belts), which from north to south are known as High Mountains, Mountains, Hills, Siwaliks  and Tarai. With altitudes ranging from less than 100 m in the Tarai to 8,848 m in the High Mountains, there exist different climates and different types of farming systems within Nepal. As a result of these diversities, a wide variety of crops, vegetables and fruits are produced.
 
For administrative and developmental purposes, Nepal is divided  into 75 districts. Each district is further divided into Village Development Committees (VDCs) in rural areas and municipalities in urban areas. At present, there are 3,913 VDCs and 58 municipalities in Nepal.

1. Brief Basic Information on Country and Agrarian Status

Peru is the third largest country in South America with 1,285,215 square-meters and in general, there are three well defined regions: the Coast (11 per cent of the territory), the highlands (30 per cent of the territory) and the jungle (59 per cent of the territory). Peru is characterized by the high variability of agro-ecosystems ranging from Deserts in the Coast, lowlands, hills, high mountains, and rainforest in the Jungle. Each region has different agro-climatic conditions, infrastructure and enterprise development. The total cultivable land area is 54,76,977 hectares that is equivalent to 4.3 per cent of the national territory. The coast has 8,70,200 hectares of irrigated land (no rain-fed land because of lack of rain in the coast) and has the best conditions for cultivation of export crops. The highlands have 28,33,800 hectares of cultivable land, 70 per cent of them is under rain-fed condition and the total of the 17,73,000 hectares of cultivated land under rain-fed conditions1 . Land property has undergone a process of changes in the last 40 years.

1. Basic Information

Philippines  is located between 4o23’N and 21o25’N latitude, and between 116oE and 127oE longitude. It is an archipelago of 7,107 islands with three major groups of islands: Luzon, Visayas and Mindanao. It is bounded by the Bashi Channel up north, Sulu and Celebes Seas in the south, the Pacific Ocean to its east, and the South China Sea to its west. The Philippines has a tropical climate with an average temperature range of 23° to 32°C. Populated by 88 million people, the country has a total land area of 3,00,000 square kilometers  (30 million hectares); where about one third is agricultural land (NSO, 2007).

Of the agricultural land, 31 per cent is used for cereals such as corn and rice, 52 per cent for food crops and 17 per cent for non-food crops (ITC, 2007). Majority of these are cultivated on small farms averaging about two hectares and are managed by single families ranging from subsistence to commercial production (NSCB, 2007).

1. Country Profile
 
Trinidad & Tobago comprises two islands with Trinidad being by far the larger of the two. They have a combined land area of 5,130 sq. km with Trinidad being 4,825 square kilometer. Over 95 per cent of the population of 1.3 million lives in Trinidad. Tobago’s affairs are, for the most part, administered separately through the Tobago House of Assembly, and therefore, the description of it’s extension system is reported separately.

The CSO report (CSO, 2004) listed Trinidad as having approximately 18,142 farmers who are mostly male (85 per cent) and average age of 52 years. These farmers farm on 84,900 hectares of arable land. The majority of this land (72.5 per cent) is under crop cultivation. While most of this land is dedicated to Sugarcane production, tree crops and vegetable cultivation are also important commodities. The rest of the farmland is used for Livestock (10.6 per cent), mixed farming (16.3 per cent) and some small amount of fisheries production. The majority of farms (63 per cent) are less than 5 hectare in size with 22  per cent being less than 0.5 hectare. Agriculture is mainly rain- fed but increasing amounts of farmland are being irrigated. Trinidad has six months of dry season (January-June) and an annual rainfall of 2010.9 mm of rain.

1. Basic Information and Agrarian Status

Zimbabwe is a landlocked country located in Southern Africa covering 39,037,000 hectares. It is bordered by Zambia, Mozambique, South Africa, Botswana and Namibia. It is situated between 15 and 22° south latitude and 26 and 34° east longitude. Climatic conditions are largely sub-tropical with one rainy season between November and March. In 1981, the country had 5 hectares per capita whilst it is estimated that the current population to land ratio has declined to 3.25 hectares per person and this is largely attributed to population increases that have taken place over the years. The national census conducted by the Central Statistics Office in 2002 showed that the country has a population of 1,20,00,000 people. About 80 per cent of the population resides in the rural areas, where they sustain their livelihoods through agriculture. When discussing agricultural production activities in the country, it is important to note that nearly all the soils (80 per cent) in the country are sandy from granite rocks or from schists.

• What is Agroinformatics?
• Agroinformatics
• Definitions 
• Objectives of Agroinformatics
• Information Systems Terminology
• Agroinformatics Tools

• Agriculture Information Systems
• Major Trends
• Agriculture Information System
• Importance
• Internet Based Agriculture Information System
• Support Provided by Agriculture Information System
• AGRIS/CARIS
• AGROVOC
• Agriculture Research Information System (ARIS)
• Agriculture Research Information Center

• Introduction
• The Concept of a Farm Management System

• Introduction
• Characteristics of Management Information System
• Management Information Systems Advantage
• Outputs of a Management Information System

• Defining GIS
• Fundamentals of GIS
• Mapping Concepts, Features and Properties
• Geographical Data Sets
• Spatial & Non-spatial Data
• Attribute Data
• Remote Sensing in Agriculture
• Remote Sensing in Farm
• Principles of Remote Sensing
• How Does Remote Sensing Work?
• Global Positioning System
• Components of a GPS
• GPS Positioning Types
• GPS Applications
• Remote Sensing and GIS
• Use of GPS in Agriculture
• General Packet Radio Service (GPRS) Network 
• The GPRS Network
• Benefits

• What is Intelligence?
• What is Artificial Intelligence?
• Branches of AI
• Natural–Language
• Natural Language Processing 
• Natural Language Recognition
• Simple Natural Language Grammar
• Intelligent Technologies in Agriculture
• Intelligent Animal Houses
• Agricultural Robots

• What is a Neural Network?
• How does an Artificial Neural Network (ANN) work?
• Characteristics of Neural Networks 
• Architectures of Artificial Neural Networks
• Learning Process
• Classification of Learning Algorithms
• Artificial Neural Networks in Agriculture -Intelligent Agent 
• Classes of Intelligent Agents
• Characteristic of Intelligent Agents

• What is Meant by the Term Expert?
• Building Blocks of Expert Systems
• Designing Expert Systems in Problem Solving 
• Applications of Expert System
• An Expert System for Decision Problem
• Advantages of Expert System
• Cases of Expert Systems in Agriculture

• Introduction
• Types of DSS
• Scope of DSS
• Benefits of DSS 
• Common Uses of Decision Support Systems
• Decision Support System for Farm Management

• Introduction
• Features of Genetic Algorithm 
• Steps in Executing the Genetic Algorithm
• Applications of Genetic Algorithm
• Artificial Ant Problem

• A Brief Description of Visual Basic
• Types of Application in VB
• Creating the Project
• Steps in Building a Visual Basic Application
• Visual Basic Data Types
• Managing Variables 
• Constants
• String Functions
• Operators in Visual Basic 
• Controlling Program Flow
• Looping
• The InputBox( ) Function
• Methods
• Procedur
• Control Array
• Msgboxes
• Data Access
• Data Access Objects (DAO)
• Microsoft Jet Database Engine 
• Remote Data Objects
• Microsoft ActiveX Data Objects
• Data Control
• Object Linking and Embedding (OLE)

• Database
• Data Model
• Database Software
• DBMS Facility 
• Architecture for a DBMS
• Data Modeling
• Components of a Data Mode
• RDBMS (Relational Database Management System)
• Client/Server Model of Computing
• Entity Relationship Diagram (E-R diagram)
• Entity Relationship Diagram Notations - Front-end and Back-end
• Codd’s Rules
• SQL - Structured Query Language
• Data Definition Language (DDL)
• Data Manipulation Language (DML)
• DCL
• Data Control Language
• Transaction Control (TCL)

• Agriculture Database Concepts and Importance
• The Orientation of Topic Selection for the Construction of the Agricultural Database
• The Principle of Specialization in the Construction of the Agricultural Database
• Top Quality Principle of Building Databases
• Agriculture Database Types
• Agriculture Libraries
• Agriculture Journals
• Technical Reports
• Conference Papers
• E-Books in Agriculture

• Web Portal
• Types of Portals

• Definition of Bioinformatics
• History of Bioinformatics 
• Structural Bioinformatics
• New Branch of Bioinformatics 
• Bioinformatics - Application in Agriculture
• Analyzing Protein Sequence
• Pairwise Alignment
• Multiple Alignment
• Blast - A Sequence Alignment Tool
• EMBL
• SWISS–PROT
• Rice Genome Project
• Software for Bio-informatics
• Major Categories of Bioinformatics Software
• Internet Sites For Bioinformatics

Abstract: The size of the homegardens ranged between 0.10-1.00 ha; they were located in tropical region with multi-storied structure, commonly containing three layers but sometimes with four layers. Individual households were the sampling units and for each homegarden, the area was measured and crop composition, species richness and uses of plant species was enumerated through direct observation and interviews with the farmers. The composition and richness of species varied between the homegardens but was related to site characteristics and size of the garden. A total of 231 plant species (105 tree species, 50 shrubs and 76 herbs) belonging to 88 families were recorded from the gardens among which 27% species were common to all gardens. Among the trees, as many as 24 species (23%) were common to all the homegardens. The vegetable species constituted the major functional group followed by fruits. Homegardens were found to be a good reservoir of plant genetic resources that preserve diverse landraces, cultivars, and many more ecologically and economically important plant species. Our study depicts that the homegardens can play an important role in food security and sustainable livelihood support of this hilly people in a variety of ways and can be an alternative to shifting cultivation.

Abstract: Shifting cultivation locally called Jhuming is a part and parcel of tribal life of the North Eastern Hill Region of India and it has direct bearing with their socio-cultural system. It is a boon to the farmers as long as the jhuming cycle is sufficiently longer (10-15 years) as this would not only produce a good crop but also gives sufficient time for ecological restoration and biophysical balance. However, with the increase in population pressure on land the jhuming cycle is getting drastically reduced (3-6 years). As a result of this, soil health is getting degraded and overall ecosystem is in threat. Many important flora and fauna are in the verge of extinction. As we cannot run away from the problem at least thinking about posterity, we have to find a decisive solution immediately. Developing improved methods of jhum cultivation like proper bunding, residue recycling, use of high yielding varieties etc. are few short term options. However long term viable options would be proper land configuration like terraces, water harvesting, agroforestry, adoption of integrated farming system approach and above all education and awareness among the tribal farmers which would help in sustaining the ecosystem of the region.

Abstract: The adoption of agroforestry systems has gained wider attention in the Multilateral Environment Agreements (MEA), international academia and policy makers for their multifunctional role and dynamics of ecosystem services. The Convention on Biological Diversity (CBD) has put forward ecosystem approach while Intergovernmental Panel on Climate Change (IPCC) emphasized agroforestry as an appropriate means to reduce emissions and enhance sinks of green house gases. Traditional agroforestry systems such as cardamom-based and farm-based practices are good examples in the Eastern Himalayas. We analyzed the management diversities and functional roles of these agroforestry systems for their productive and protective functions, biodiversity conservation, carbon sequestration, reduction of run-off rainfall, improvement of soil fertility, nutrient dynamics, nutrient release through decomposition, N2-fixation, energetics and efficiencies. Use of N2-fixing Himalayan alder (Alnus nepalensis) in large cardamom (Amomum subulatum) and Albizia spp. in mandarin agroforestry are traditional innovations. The agroforestry systems and practices are examples of how fragile and steep slopes of the mountains are converted into ecologically resilient productive zones. These adaptive traditional agroforestry provide options for sustainable management of natural resources from a unit land use types to a landscape level land use stages and offer opportunities for socioeconomic benefits.

Introduction

Agroforestry refers to practices, which deliberately or intentionally mix or retain woody perennials on the crop/animal production systems. It combines elements of agriculture, crops and/ or animals with elements of forestry in production system in a unit of land, either simultaneously or sequentially. The term woody perennials includes tree, shrubs, bushes, palm, bamboos, etc. which in agroforestry context are often referred to as multipurpose trees and shrubs (Wood, 1988). The word deliberate has significance a few trees remaining during the process of land clearance for agriculture is not agroforestry. To qualify as agroforestry, a system should actively promote the woody perennials for a particular purpose, or purposes, on the farm (Bhatt et al., 2001). This land use system is particularly suitable for resource poor marginal farmers became diverse needs are fulfilled by one system with escape routes during natural calamities. In hill agro-ecosystems, agroforestry plays an important role in sustainable resource conservation and food security. It is also used to diversify and intensify farming systems through integration of indigenous tree-crops.

Abstract: Acacia nilotica (L.) Willd. Ex Del is an important multipurpose tree of traditional agroforestry system in the central India. The present chapter reports influence of tree canopy positions, i.e. mid canopy, canopy edge and canopy gap, of Acacia nilotica (12-yr) on texture, organic C, total and mineral N and P and soil pH, in different depths of soils, on productivity of rice during rainy and wheat during winter season. It also reports how residual nitrogen under the tree influence yield of rice following its felling after completion of rotation cycle. Sand particles are found to decline by 10% and 9% whereas clay particles increase by 14% and 10% under mid canopy and canopy edge, respectively, than in open. Clay particles are not influenced by the canopy positions. Soil organic C, total N, total P, mineral N (NO3- -N and NH4+- N) and P are greater under mid canopy and canopy edge positions than in open. Soil organic C and N pool sizes are maximum in 0-10 cm and decline with depths. Total and mineral P contents are nearly uniform across the depths. C/N ratio increases with soil depth. Despite greater nutrients pools under the tree, density, aboveground biomass, belowground biomass, aboveground biomass / belowground biomass ratio and yield of the rice decline by 27.5%, 27.5%, 19.1%, 14.8% and 24.9%, respectively. Like the rice, yield of wheat also declines under the tree. 

Abstract: The study reports the influence of biophysical and socio-cultural factors on composition, diversity and distribution of plant species in the homegardens of the Andaman and Nicobar archipelago of India. In Nicobar mostly an aboriginal tribe the Nicobari predominates. The Nicobaries are Christians. However, in the Andamans people from different parts of Indian subcontinent have been rehabilitated in the mid twentieth century. Mixed culture prevails in South Andaman, but in the other Andaman islands either Bengali or Tamil culture predominates. Biophysically, South Andaman is hilly whereas Nicobar is flat. Rests of the islands lie in-between the two extremes. But, all are similar climatically. Twelve to thirty-four plant species are found in the homegardens that are planted, cared and harvested. These plants are: palm, fruit, spice and forest trees, formed three-storey structure in Andaman and two-storey structure in Nicobar’s homegardens. Floristic similarity among the homegardens of the Andamans is 82 to 92%. However, it is only 12-18% between the homegardens of Andaman and Nicobar. Compared to Nicobar, species richness is greater in the homegardens of the Andamans. But, diversity is higher and evenness lower in the homegardens of Nicobar. All plant species in the Nicobar’s homegardens are spontaneous in regeneration. Among the Andamans, proportion of spice trees is higher in the homegardens of South Andaman, mango and citrus in North Andaman, and pineapple and vegetables