eChapters

Common name    :    English- Angled luffa
        Hindi- Karvitori
        Odia- Pita taradi

Family    :    Cucurbitaceae

Habit & Distribution 
The plant is a climber (Fig. 60 a), widely cultivated and also found in wild. It is cultivated throughout India.

General Characters
It is an annual climber with smooth and angled stem. The leaves are 5-7 lobed or angled, 7.5-15 cm across and covered with short hairs. Flowers are yellow in colour with male and female in the same axil. The fruits are ribbed and cylindricaly shaped and 1-2 feet in length. The plant bears flowers and fruits during August-November.

Common name    :    English- Mango
        Hindi- Aam
        Odia- Amba 
            
Family    :    Anacardiaceae

Habit & Distribution
It is a tree (Fig. 61 a) grows wild in valleys and widely cultivated throughout tropical India.

General Characters
The plant is a large, erect and ever green tree gowing up to 30-80 ft in height with a broad and rounded canopy. The leaves are variable in size and shape, usually lanceolate, entire, acute to acuminate with 10-20 cm in size. The flowers are greenish-yellow, small and polygamous with 5 lobed calyx which are ovate-oblong or elliptic in shape and remain spreading. There is a great variation in the size, colour and flavour of the fruits. They may be nearly round, oval, ovoid-oblong or somewhat kidney shaped and usually yellow in colour when ripe. The plant bears flowers during January-March and fruits during April-May.

Common name    :    English- Tiger’s claw/Devil’s claw
        Hindi- Ulat kanta
        Odia- Bagha nakhi

Family    :    Martyniaceae

Habit & Distribution
The plant is a herb (Fig. 62 a), commonly occur in roadsides, waste lands, and also naturalized. It is widely distributed in India.

General Characters
It is an erect, often branched herb that grows up to 2 m in height. Leaves are kidney shaped to circular, mostly 6-15 cm wide, both surfaces are equally hairy, margins with shallow lobes and leaf stalk is 9-14 cm long. Flowers are bell shaped purplish white with dark purple markings. Fruit is capsule, more or less ovoid, 2 valved, with the style splitting into 2 curved, lignified and spiny processes with curved claw of about 1 cm. The plant bears flowers and fruits during August-January.

Common name    :    English- Touch me not/sensitive plant
        Hindi- Lajwanti
        Odia- Lajakuli 
            
Family    :    Mimosaceae

Habit & Distribution
The plant is a common weed mostly found in roadsides, waste places, damp sites, agricultural lands etc. It is widely distributed throughout the better parts of India. (Fig. 63 a)

General Characters
It is a small prostrate or ascending herb with prickly stems and grows up to a height of 50 cm with a spread of 30 cm. The leaves are bipinnate, fern like and pale green, closing when disturbed. The flowers are pale pink or purple in colour, round to ovoid heads (8-10 mm in diameter) and the flower heads arise from the leaf axils. The plant bears flowers and fruits during August-May.

Common name    :    English- Spanish cherry
        Hindi- Maulsari
        Odia- Baula
        
Family    :    Sapotaceae 

Habit & Distribution
The plant is a small tree (Fig. 64 a), frequently planted elsewhere also in gardens. It is distributed throughout India.

General Characters
It is a small tree with small shiny thick narrow, pointed leaves, straight trunk and spreading branches. The leaves are elliptic or oblong, 6.2-10 cm long. Flowers are small star shaped, white, yellowish white in color with a crown rising from the centre. The fragrance of flowers is very graciously scented. The fruit turns yellow-orange when ripens and are eaten fresh. The plant flowers during April-May and bears fruits during August-September.

Common name    :    English - Banana
        Hindi - Kela
        Odia - Kadali

Family    :    Musaceae

Habit & Distribution
The plant is a large herb (Fig. 65 a), indigenous to Odisha, Bihar and Eastern Himalayas. The plant is cultivated throughout India.

General Characters
Banana is a tropical small size tree, with large leaves with overlapping bases from the trunk. The leaves are oblong and 1.2-1.5 m in length. The stem reaches a height of about 10-30 feet. Flower develop from the centre of crown. Only female flowers develop into a banana fruit that vary in length from 4 to12 inches. Each banana plant bears fruits only once. The plant bears flowers and fruits in most parts of the year.

Common name    :    English- Bur flower
        Hindi- Kadamb
        Odia- Kadamba

Family    :    Rubiaceae
 
Habit & Distribution
It is a tree (Fig. 66 a), seen growing widely in deep moist, alluvial sites and often in forests along river banks. It is widely distributed throughout India.

General Characters
The plant is a large straight deciduous tree that reaches to 45 m height. The leaves are large simple, elliptic-oblong, entire and 13-32 cm in length. Flowers are orange colored, small, in dense, globose heads that appear like solid, hairy orange balls. The fruits are small capsules, packed closely together. It bears flowers on May-July and fruits during August-October.

Common name    :    English- Shoo-fly plant
        Hindi- Popti

Family    :    Solanaceae
 
Habit & Distribution
The plant is a herb (Fig. 67 a), commonly found in fallow land, naturalized in waste places and near dwellings. It is distributed throughout India.

General Characters
It s an erect annual plant reaches up to 3-8 feet in height and are about half as wide. The leaves are large, alternate, reaching up to 1 feet long and somewhat resembles Datura leaves. Flowers are pale blue or blue purple with white centre. Fruits are berry, brown or yellow when matures, up to 2 cm in diameter. The plant flowers and bears fruits during October-February.

Common name    :    English- Water lily
        Hindi- Kanval
        Odia- Kain

Family    :    Nymphaeaceae
 
Habit & Distribution 
The plant (Fig. 68 a) is an aquatic perennial herb, commonly found in lakes and ponds. It is distributed throughout the warmer parts of India.

General Characters
It is an aquatic plant having erect perennial root stocks that anchor it to the mud in the bottom of the water bodies. Leaves vary from being elliptic-oval to almost circular 15-26 cm across, fine hairs on upper side and always remain at floating stage. Flowers are mostly white, occasionally pink or red reaching up to 15 cm in diameter. The plant flowers and bears fruits throughout the year.

Common name    :    English- Sage Leaved Alangium
        Hindi- Ankol
        Odia- Ankula/Dhalanga
Family    :    Cornaceae
Habit & Distribution 
The plant is a tree (Fig. 69 a), commonly found in dry regions in plains and low hills and also found on roadsides. The plant is widely distributed throughout India.
General Characters
The plant is a tall thorny tree native to India. It grows to a height of about 3 to 10 meters. The bark is ash colored, rough and faintly fissured. The leaves are elliptic oblong or elliptic lanceolate. The flowers are greenish white, fascicled, and axillary. The berries are ovoid, ellipsoid, glabrous, smooth and violet to purple in colour. The plant flowers and bears fruits during February -June.

Common name    :    English-Rice
        Hindi-Chawal
        Odia-Dhana
    
Family    :    Poaceae

Habit & Distribution 
The plant (Fig. 70 a) is a annual herb, and several varieties of this plant are largely cultivated all over the world, especially in Asian countries.

General Characters
It is a semi aquatic monocot plant. The plant grows up to 3-5 ft in height. It has long, slender leaves, 50-100 cm long and 2-2.5 cm broad. Flowers are produced in branches arching to pendulous inflorescence 30-50 long. The edible seed is a grain, 0.5-1.2 cm long and 2-3 mm thick. The plant flowers and bear fruits during September-January and also in April-May.

Common name    :    English- Kewda/Screw pine
        Hindi- Gagan dhul
        Odia- Kia

Family    :    Pandanaceae
 
Habit & Distribution 
It is a shrub (Fig. 71 a), wild in deltaic swamps of Mahanadi and other sandy coastal areas. Seen both in wild and cultivated in India.

General Characters
It is a bushy shrub, reaches up to 3-4 m in height. The leaves are closely spiral, spiny and leathery with fragrance. Flowers are pedicellate with stamens spirally arranged on the floral axis. Flowers have a sweet and perfumed odor.

Common name    :    English-Yellow flamebouyant
        Hindi- Peela gulmohar 
        Odia- Radhachuda

Family    :    Fabaceae

Habit & Distribution
It is a tree (Fig. 72 a), frequently planted in gardens, road sides etc. and widely distributed throughout India.

General Characters
The plant is a deciduous tree growing up to 15-25 m height with a trunk diameter of about 1m. The leaves are bipinnate, 30-60 cm long, with 16-20 pinnae, each pinna with 20-40 oval leaflets. The flowers are yellow, 2.5-4 cm diameter, produced in large compound racemes up to 5-10 cm long and 2.5 cm broad, red at first, ripening black and contain 1-4 seeds. The plant flowers during March-May and bears fruits during April-December.

Common name    :    English- Date palm 
        Hindi- Khajur
        Odia- Khajuri

Family    :    Arecaceae
 
Habit & Distribution 
The plant is a tree (Fig. 73 a). It is commonly, wild or cultivated throughout India. It thrives from the plains to the coast in low-laying waste lands, scrub forest and water logged areas.

General Characters
It is a moderate sized dioecious tree which grows up to 4-10 m. in height and 30 cm diameter with a large crown and rough trunk covered with persistent leaf bases. The leaves are 3 m. long, gently recurved on 1 m petioles with spines near the base. The leaf crown grows to 5 m wide and 7-10 m tall containing up to 100 leaves. The inflorescence grows to 1 m with white flowers. The single seeded fruit ripens to orange-yellow. The plant flowers and bears fruits during May-October.

Common name    :    English- Wild leadwort
        Hindi- Chitrak 
        Odia- Ogni 

Family    :    Plumbaginaceae 

Habit & Distribution
The plant is a shrub (Fig. 74 a), frequent in open places, scrub forests and among bushes. It is widely distributed throughout India.

Gerneral Characters
The plant is an evergreen shrub that reaches about 6 feet in native. The leaves are dark green, spreading and ovate in shape. Flowers are white, terminal, often panicled and grow as dense racemes. Individual flowers are up to ½ inch across. The plant flowers and bears fruits during September-April.

Common name    :    English- False Asoka 
        Hindi- Ashok 
        Odia- Debadaru

Family    :    Annonaceae
 
Habit & Distribution 
The plant (Fig. 75 a) is usually planted in gardens, roadside avenues and also cultivated throughout India.

General characters
The plant is a tall evergreen tree having slender and glabrous branches, growing up to a height of 25 feet. The leaves are narrowly lanceolate, glossy green, long with attractive wavy edges. Flowers are yellowish-green, star like structures that give the tree a peculiar hazy appearance. Seeds are smooth and shining. The plant flowers in March-April and bears fruits during July-August.

Common name    :    Shaving brush tree

Family    :    Malvaceae

Habit & Distribution 
The plant is a large tree (Fig. 76 a), usually seen in open forests often scattered through fields and over plains, besides on open rocky hillsides. It is distributed throughout Indian.

General characters
It is large deciduous tree, which grows up to 30-40 feet in height. The leaves at first are bright red turning fine green as they mature. Flowers are having silky rose-pink stamens topped with yellow pollen. The wood is interesting as well, showing strippings of greens, yellows, brown and white. The plant flowers during October-February.

        Odia- Jada/Gab

Common name    :    English- Castor bean
        Hindi- Arandi 
        Odia- Jada/Gab
        
Family    :    Euphorbiaceae
 
Habit & Distribution
The plant is a shrub or small tree (Fig. 77 a), often found in wastelands, fields, gardens and near villages. Also cultivated as a cash crop. It is widely distributed throughout the dry parts of India.
 
General Characters
The plant is a fast growing, sucking perennial tree that reaches the size up to 12 m. The leaves are 15-45 cm long, stalked, alternate and palmate with 5-12 deep lobes. The flowers are borne in terminal panicle like inflorescences of green or shades of red monoecious flowers without petals. The fruit is spiny, greenish capsule containing large and oval bean like seeds. The plant flowers and bears fruits during most parts of the year.

Common name    :    English- Rose
        Hindi-Gulab
        Odia- Golap

Family    :    Rosaceae
 
Habit & Distribution 
It is a shrub (Fig. 78 a), commonly planted in gardens and also cultivated.

General Characters
The plant is a woody, perennial shrub. The leaves are borne alternately on the stem. In most species, they are 5-15 cms long, elliptic-lanceolate, pinnate with 3-11 leaflets. Flowers are usually white or pink, though in a species yellow or red with 5 cm across. The aggregate fruit of the rose is a berry like structure called a rosehip. The plant flowers during February-March.

Common name    :    English- Fever root
        Hindi- Ruwel

Family    :    Acanthaceae
 
Habit & Distribution
It is a herb (fig. 79 a), often found in wastelands, cultivated land, waysides etc. sometimes in gardens also. The plant is widely naturalized in India.

General Characters
The plant is a tropical perennial herb, growing up to a height of 6.5 inches with hairy stem. The leaves are simple, opposite and elliptic-obovate with 4.10-1.8-4 cm in size. Flowers are blue or violet with 3-4 cm in long. The ripe fruits in a pod carry 7-8 seeds each in it. The plant flowers and bears fruits during June-February.

Common name    :    English- Sugarcane
        Hindi- Ganna
        Odia- Akho

Family    :    Poaceae

Habit & Distribution 
It is a tall herb (Fig. 80 a), widely cultivated in Odisha and also throughout the hotter parts of India.

General Characters
The plant is a giant grass. The stem is erect, jointed, 3-5 m tall, 2-3 cm thick with plenty of juice. Leaves are elongate, rigid, mostly 4-6 cm wide, with a very thick midrib. The flowers are white, appear in plume like panicles, 20-60 cm long. The plant flowers and bears fruits during November-January.

Common name    :    English- Tropical soda apple
        Odia- Denga bheji/Bheji baigana

Family    :    Solanaceae

Habit & Distribution
It is a perennial shrub (Fig. 81 a), is commonly found in grassland, thickets and disturbed places such as roadsides and river banks.

General Characters
The plant is an erect perennial shrub, reaches up to 50-150 cm high with shortly pubescent stems and branches with recurved prickles up to 5 mm long. The leaves are broadly ovate up to 20 cm long and 15 cm wide, generally dark green in colour, and glossy above. The flowers are white, 1.5 cm across arranged in clusters. The fruit is a globose berry, mottled green when young and yellow at maturity, with 2-3 cm across. The plant flowers and bears fruits throughout the year.

Common name    :    English- Marigold
        Hindi- Genda 
        Odia- Gendu

Family    :    Asteraceae

Habit & Distribution
It is a herb (Fig. 82 a) commonly cultivated in gardens. It is a very popular flowering plant commonly found in India and other countries.

General Characters
The plant is a very popular aromatic annual herb with 50-100 cm in height. The leaves are pinnately divided, in to oblong or lanceolate. Flowers are yellow, orange in colour, and large head with 3-5 inches across. The plant flowers mainly during cold season.

Common name    :    English- Tamarind
        Hindi- Imli 
        Odia- Tentuli

Family    :    Fabaceae

Habit & Distribution 
The plant is a large tree (Fig. 83 a), fairly common, planted or self sown. It is widely distributed throughout India, also cultivated and self-sown.

General Characters
It is a large tree which grows up to 30-50 m height with spreading crown up to 12 m in diameter. The leaves are up to 5 cm long and composed of numerous small leaflets. Leaflets are 10-20 pairs, small and close. The flowers are about 1 cm across, pale yellow with purple or red veins. Fruits are brown, short haired, sausage like, contain an acidic pulp that surrounds the seeds, extremely sour. The plant flowers during April-June and bears fruits during December-March.

Common name    :    English- Teak
        Hindi- Sagun
        Odia- Sagwan 

Family    :    Verbenaceae

Habit & Distribution 
The plant is a tree (Fig. 84 a), naturally confined to south-western part of Orissa, also widely planted all over the state. The plant commonly distributed in central India to Orissa, also widely planted.

General Characters
It is a large deciduous and very popular timber tree. Leaves of the tree are large, opposite with 30-60 cm long and 15-30 cm broad. The flowers appear in large numbers in lax clusters at the end of branches with white colour. The fruit is about 15 mm across, spongy and enclosed in persistent calyx. The plant flowers during July-August and bears fruit during December-April. 

Common name    :    English- Indian Tinospora
        Hindi- Gulbel
        Odia- Gulochi

Family    :    Menispermaceae
 
Habit & Distribution
It is a shrub/climber (Fig. 85 a), frequently found in forests and widely distributed throught tropical India.

General Characters
The plant is a climber, with stems about 5 cm diameters with light grey and papery bark. The leaves are about 7.5-14 cm long, broadly ovate or orbicular, deeply heart shaped at the base. Flowers are racemes which are 7-14 cm in long, greenish yellow in colour and arranged in 3+3 sepals in 2 layers, the outer one are small, the inner one are large. Fruits are red, globose to subglobose with 6-8 mm across. The plant flowers during August-December and bears fruits during March-May.

Common name    :    English- False white teak
        Hindi- Pindar
        Odia- Jandakhai

Family    :    Euphorbiaceae
 
Habit & Distribution 
The plant is a tree (Fig. 86 a), commonly found along riverbanks, evergreen and semi-evergreen forests. It is distributed throughout India.

General Characters
It is a large deciduous tree, growing up to 10-20 m tall, with a smooth grey bark. The leaves are oppositely arranged ovate, 7-17 cm long and are heart- shaped at the base and have tapering tips. Leaf-stalks are 3-7 cm long. Flowers are small and greenish. Male flowers are borne in 7-19 cm long racemes and are carried on slender stalks. Female flowers are borne singly on long stalks. Fruit is round, with 2-4 compartments, 2-4 cm in diameter, smooth or hairy, exocarp thick and fleshy. The plant flowers and bears fruits during December-March.

Common name    :    English- Coat buttons
        Hindi- Khal-Muriya
        Odia- Bisalya karani

Family    :    Asteraceae
 
Habit & Distribution
The plant is a herb (Fig. 87 a), usually found in dry locations, especially sandy and rocky sites like roadsides, railways, dunes and waste places. It is widely distributed throughout India.
 
General Characters
The plant is a perennial herb that stands about 30-60 cm in height and has slightly hairy stem. The leaves are ovate or lanceolate with toothed edges. Flowers are small, creamy or white in colour having 5 petals that are notched in the outer edges. The centre of the flower is yellow. The plant flowers and bears fruits all the year round.

Common name    :    English- Burr Bush
        Hindi- Chikti
        Odia- Badya chana pata/tatatatia

Family    :    Tiliaceae

Habit & Distribution
The plant is a herb (Fig. 88 a), fairly common weed, distributed throughout tropical and subtropical India.

General Characters
It is an erect woody herb, grows up to 30-90 cm. leaves are simple, alternate, broadly ovate to sub orbicular. Flowers are yellow, small and clustered on leaf axils. Fruit is a subglobose and about 3-4 mm in diameter, covered with 75-100 hooked spines of 1.0 to 1.5 mm long. The plant flowers and bears fruits during July-January.

Common name    :    English- Rangoon creeper
        Hindi- Madhumalti
        Odia- Madhumalati

Family    :    Combretaceae
 
Habit & Distribution
It is a climbing shrub (Fig. 89 a), cultivated widely in gardens and distributed throughout India.

General Characters
The plant is a twining climber blooming profusely throughout summer and can reach up to 70 feet in tropical climate. The leaves are elliptic-oblong and 7-15 cm long. Flowers are scented, pink-white to reddish-white in colour and grow in pendent racemes with a very fast rate. The plant flowers and bears fruits in most parts of the year.

Common name    :    English- Common Cocklebur
        Hindi- Chhota dhatura/Ghagra
        Odia- Mendhaguli

Family    :    Asteraceae

Habit & Distribution
The plant is a herb (Fig. 90 a), found in cultivated lands, coastal dunes, water resources, roadsides, waste places and field edges. It is distributed throughout India.

General Characters
The plant has large and broad leaves, light and bright green in colour in an alternate pattern with irregular lobes. Stem turns maroon to black when mature, with hairy appearance. The flowers are white or green, numerous and covered with hooked bristles. The fruit is obovoid, 1.5-2.5 cm long and covered with hooked spines of 2-4 mm long. The plant flowers and bears fruits during August-September.

Women are the backbone of rural economy. They play a significant role in domestic and socio-economic life of the society. National development is not possible without developing this important and substantial segment of any society. To achieve anything, women are obliged to surmount host of obstacles. The difficulty in gaining access to land, credit and agricultural inputs hampers their potential as producers who feed the world. Barriers of tradition and discrimination have limited their access towards technology, training and education. Moreover, the extension approaches and strategies usually followed for transfer of technology to women are not keeping match with their specific needs and problems. The World Food Summit convened by FAO in 1996 drew up a plan of action to address the major impediments to universal food security. It also called for the full and equal participation of both the genders so as to ensure gender equality and empowerment of women.

The interventions for women empowerment was perhaps started intensively since fourth plan period. Subsequently many more initiatives are taken for the total all round development of women in this country.

A. 4^TH FIVE YEAR PLAN (1969-1974)

Farmers Training and Education Programme

It was for the first time in the 4^th Five Year Plan that an effort was made by Ministry of Agriculture to address the training and extension needs of women farmers with new and improved technology through “Farmers Training and Education Programme”, in which a network of 150 Farmers Training Centers were established to close the visible gap between the recommended package of practices and the farm women’s knowledge and skills about them. In this programme, a linkage of the supply of production inputs with improved technical training, supported by Farm Radio Broadcast and Functional Literacy was provided. The unique feature of this programme was that for the first time, a cognizance of women’s participation in agriculture was taken. The experience of the programme had shown that the states which gave due importance to this programme, especially in terms of curriculum planning and syllabus formulation (based on true status and needs of women farmers), achieved very good results. It was, this programme, which focused many issues that had to be categorically considered while planning and implementing agriculture support programmes for women farmers.

1. Feminization of Agriculture

Almost all active women in rural India can be considered as ‘farmers’, in some sense – working as agricultural labourer, unpaid workers in the family farm enterprise, or combination of the two. Moreover, several farm activities traditionally carried out by men are also being undertaken by women as men are pulled away into higher paying employment. Thus rural India is witnessing a process which could be described as ‘feminization of agriculture’. The significantly high and growing population of female headed households has also highlighted women’s contribution to agriculture.

Both women and men play critical roles in agriculture throughout the world, producing, processing and providing the food we eat. Rural women in particular are responsible for half of the world’s food production and produce between 60 and 80 percent of the food in most developing countries. Yet, despite their contribution to global food security, women farmers are frequently underestimated and overlooked in development strategies.

Rural women are the main producers of the world’s staple crops – rice, wheat, maize – which provide up to 120 percent of the rural poor’s food intake. Women sow, weed, apply fertilizer and pesticides, harvest and thresh the crops. In the livestock sector, women feed and milk animals, while raising poultry and small animals such as sheep, goat, etc. Also, once the harvest is in, rural women provide most of the labour for post-harvest activities, taking responsibility for storage, handling, processing and marketing.

Since time immemorial, women have played and continued to play a key role in conservation of basic life support system, such as, land, water, flora and fauna. Women power at present constitutes nearly half of the global population and account one third of the total work force. They contribute more than half of duties and responsibilities but are not given proper rights. In India till now rural women continue to struggle with dual responsibilities of economic production and domestic labour, and most are confronted by poverty, illiteracy, high health risks, inadequate access to productive resources, and lack of credit/market access. The empowerment and autonomy of women and the improvement of women’s social, political, legal and economic status is essential for sustainable rural development

1.1 Spice – definition and uses

Spice is defined as “a strongly flavoured or aromatic substance of vegetable origin, obtained from tropical plants, commonly used as a condiment”. A spice is a dried seed, fruit, root, rhizome, bark or vegetative substance or flower bud used in nutritionally insignificant quantities as a food additive for the purpose of flavoring. Spices are distinguished from herbs, which are leafy, green plant parts used for flavoring purposes. Herbs, such as basil or oregano, may be used fresh, and are commonly chopped into smaller pieces; spices, however, are dried and usually ground into a powder (http://www.reference.com/browse/wiki/Spice). American Spice Trade Association (ASTA) defines spices as “any dried plant product used primarily for seasoning purposes”. Included are tropical aromatics (pepper, cinnamon, cloves, etc.), leafy herbs (basil, oregano, marjoram, etc.), spice seeds (sesame, poppy, mustard, etc.) and dehydrated vegetables (onions, garlic, etc.) (http://www.astaspice.org/spice/frame_spice.htm). Many spices have other uses like food preservation, medicine, religious rituals, cosmetics, and perfumery or as vegetables.

1.0 INTRODUCTION

Soil fertility can be considered to be a measure of the soil’s ability to sustain satisfactory crop growth, both in the short and longer-term. Organic farming recognizes the soil as being central to a sustainable farming system. It could be argued that organically managed soils require a higher level of baseline fertility because shortfalls cannot be made up by applications of soluble fertilizers. Soil fertility is determined by a set of interactions between the physical and chemical environments of the system and by biological activity. Organic matter is linked intrinsically to soil fertility, because it is important in maintaining good soil physical conditions (e.g. soil structure, aeration and water holding capacity) and is an important nutrient reserve. Organic matter contains most of the soil reserve of N and large proportions of other nutrients such as phosphorus and sulphur.

1.0. INTRODUCTION

The plant nutrient cycling depends on micro organisms that constitute major components of the biosphere. Although less than one per cent is cultured, a tremendous diversity exists in their populations. Transformation of nutrients from soil to plants is brought about by soil microorganisms. Latest molecular techniques enable scientists to understand and appreciate the diversity and help to utilize the beneficial effects of microbial diversity for increased productivity. Among soil organisms intense activity is found in and around rhizosphere of plants because of the presence of the secreted nutrients such as carbohydrates, amino acids and other cellular components present at the growing tip of roots. These root colonizing micro organism form symbiotic, associative, or parasitic relationship with the plants. These organisms have evolved mechanisms to occupy and reside in the specialized niche. These mechanisms are often utilized both for growth enhancement and disease suppression. The host also plays an important role in selecting its own microflora for the rhizosphere similar to the probiotic microflora of human gastrointestinal tract (Haas and Keel 2003).

1.0 INTRODUCTION

Infestation by insect pests is a major factor responsible for the low productivity of spice crops in India. Spice crops such as black pepper (Piper nigrum L.), cardamom (Elettaria cardamomum Maton), ginger (Zingiber officinale Roscoe) and turmeric (Curcuma longa L.) are infested by many species of insect pests, some of which cause severe crop losses. Adoption of integrated pest management (IPM) schedules in which biological control forms a major component is more relevant in these crops since excessive use of insecticides could lead to pesticide residues in the produce and other ecological hazards. Spices are high-value and export-oriented in nature and pesticide residues are the most important non-tariff barriers on trade in these produces. There has been a renewed interest during the past decade in developing environment–friendly crop management schedules in sustainable agriculture including spice crops, reflecting the increasing concern over pesticide misuse.

1.0 INTRODUCTION

“Biological control is the reduction of the amount of inoculum or disease producing activity of a pathogen  or parasite  in its active or dormant state, by one or more organisms, accomplished naturally or through manipulation of the environment, host or antagonist or by mass introduction of one or more antagonists ” (Baker & Cook 1974). The biological world is a vast interacting network of living organisms in a state of dynamic equilibrium, reflecting changes in their physical environment and their relations to each other. Organisms exhibit many type of interactions in the process of achieving biological balance.  An organism may exert no effect on another or it may stimulate or inhibit the growth or development of the associate, it may stimulate or inhibit the formation of resting spores of the associate or it may enforce dormancy or cause lysis of the associate (Cooke & Baker, 1983).

1.0 INTRODUCTION

The bacteria in the genus Ralstonia, Xanthomonas, Agrobacterium, Xylella, Pantoea, Leifsonia, Curtobacterium, Enterobactor, Pseudomonas, Corynebacterium, Erwinia cause the most important bacterial diseases of crop plants. Few of them are directly responsible for post harvests losses during storage or transit and many of them are known to cause disease in the field. These diseases are economically important due their potential to cause crop failure in crops including spice crops. Among the bacteria genus Ralstonia is very important owing to its broad host range across the plant kingdom. Traditionally bacterial diseases of crops are prevented by the principle of ‘Disease Avoidance’ rather than disease control in the field. Their fast rate of multiplication, selective host and rapid spread in the field makes the disease control one of the challenges in the production system. The organic strategies are very well fit in the disease avoidance in the field. The preemptive strategies works exceedingly well for management of bacterial disease in any crop. Few genus such as Ralstonia, Enterobacter and Xanthomonas have been frequented in spice crops.

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Plant parasitic nematodes are among the major soil-borne crop pests that cause significant economic losses to a wide variety of crops. They cause an estimated annual crop-yield loss of US$78 billion worldwide which warrants for effective control strategies (Sasser and Freckman, 1987). Nematodes have the greatest impact on crop productivity when they attack the roots of seedlings or young plantlets (Ploeg, 2001). Nematode feeding also creates open wounds that provide entry to a wide variety of plant-pathogenic fungi and bacteria. These microbial infections are often more economically damaging than the direct effects of nematode feeding.

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Black pepper popularly known as ‘King of spices’ or ‘Black gold’ is one of the important and earliest known spices produced and exported from India. Its original home is the dense evergreen forests of Western Ghats in south India. The flavour and fragrance of this oriental spice had a magic spell in human civilization and culture since very ancient days. Expeditions in search of pepper led to the discovery of new trade routes.

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Cardamom (Elettaria cardamomum Maton.) acclaimed as the ‘Queen of Spices’ is the true cardamom belonging to the family Zingiberaceae. The cardamom of commerce is the dried ripe fruit and is one of the most important valued spices next only to saffron. It is native of evergreen forests of Western Ghats of South India. Cardamom is a shade loving plant (Pseophyte) thriving well in elevations up to 600-1200 m above MSL under an average annual rainfall of 1500-4000 mm and temperature range of 10-350C. India has been the world’s largest producer of cardamom until 1979-80. Later, Guatemala emerged as world’s premier producer and the exporter of cardamom accounting for about 90 per cent of the global trade. Cardamom is also grown lesser extent in Sri Lanka, Papua New Guinea and Tanzania.

1. INTRODUCTION

Ginger (Zingiber officinale Rosc.) is a perennial herb and the economic part is underground stem (rhizome), which is used as a spice. It is native to tropical South-East Asia, introduced into the West Indies, African countries and other tropical belt of the world. The ginger rhizome is harvested between 6 and 12 months after planting and used as spice in the fresh condition,  peeled and split dried or powedered forms. Ginger is utilized widely as a spice, for pickles, candies and as a medicinal herb. The anti-inflammatory and anti-nausea qualities of ginger have applications in the pharmaceutical industry. Ginger and supplements derived from ginger have received attention for the treatment of chronic inflammation. Administration of ginger has resulted in decreased symptoms of rheumatoid arthritis (Srivastava and Mustafa, 1992) and gingerol (a component of ginger) has been reported to have anti-inflammatory actions (Kiuchi et al., 1992; Tjendraputra et al., 2001).

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Turmeric (Curcuma domestica Val. (syn. C. longa Koenig non L.) is an important spice, a native of India and South East Asia. Chikarmane et al. (2003) by analyzing historical patterns of movement of South Asian and Southeast Asian people known to have used turmeric suggested that turmeric was introduced into Southeast Asia via Indian colonization in the early Christian centuries. An increase in colonization events from South India during this time was because of discoveries in navigational science and desires to expand civilizations, rather than military conquests. The cultural expansion from South India supports the introduction of turmeric cultivation to Southeast Asia via human means. These human migratory patterns are compared to a phylogenetic analysis of DNA sequence data within Curcuma, and suggested that key locations such as the Isthmus of Kra were important not only to human movement but to species evolution in Curcuma (Chikarmane et al., 2003).

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Vanilla is one of the most popular and widely used flavour materials in the world and it is the most expensive spice traded in the global market after Saffron (Crocus sativus L). The major consumers of vanilla beans currently are the developed countries with the US, France and Germany absorbing about 80 per cent of the world imports. Among them, the US imports 50-60 per cent while the latter 10-15 per cent each. They are also main re-exporters of both vanilla beans and processed products. The total area under vanilla cultivation in the world during 2002 was 38,066 ha with the production of around 4956 metric tones and increased to 76,440 ha with a production of 10, 360 tons during 2005 (FAO, 2007). The major vanilla producing countries are Madagascar, Comoros, Indonesia, Mexico and Reunion (Table 1). Area under vanilla in India during 2002-03 was 2545 ha with the production of 92 tonnes. (Spices Board, 2003) and increased to 5370 ha with a production of 196 tonnes during 2004-05.

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Among tree spices, nutmeg (Myristica fragrans Houtt) belonging to the family Myristicaceae is the most important, providing two spices, i.e. the nutmeg (dried seed) and the mace (dried aril covering the seed). The latter is more important. Nutmeg is cultivated mostly in the tropical areas of Indonesia and West Indies. The world annual production of nutmeg and mace is around 12000 tonnes and 2000 tonnes, respectively (Krishnamoorthy and Rema, 2001). A native of the Moluccas (The Banda Islands of East Indonesia), nutmeg is presently cultivated in several countries such as Grenada, Malaysia, Papua New Guinea, Sri Lanka, Fiji, some Caribbean Islands, Africa and China including India. Of late, Brazil also started its cultivation. The Indonesian nutmeg known as East Indian nutmeg shares 75% and Grenadian known as West Indian nutmeg shares 25% of world market and they are major suppliers in the world. The East Indian nutmeg is highly aromatic which is preferred by the USA. West Indian type is of mild flavour and is preferred in Europe. The major importers are USA, Canada, Japan and European countries. In USA, the oil is generally preferred whereas the Europeans consume it as whole spice.

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Capsicum or chilli including paprika belonging to family Solanaceae, is a native of new world tropics and sub tropics. Within the genus Capsicum, mainly five species have been recognized as domesticated namely, Capsicum annuum, C. baccatum, C. chinense, C. frutescens and C. pubescens. Most of the commercially cultivated chilli cultivars as well as paprika belong to the species C. annuum. The cultivated Capsicum was introduced to India and Southeastern Asia in the 17th century by the Portugese. The name Capsicum is possibly derived from the Greek word ‘Kapso’ meaning ‘to bite’ referring to the dominant pungency stimulated by the spice, while ‘Paprika’ means plants of the genus Capsicum, in the Hungarian language. ‘Paprika’, is defined in the world market as non-pungent (sweet) brilliant red ground Capsicum powder, derived from the thick flesh dried red pods, with most of the seeds and veins removed. Both chilli and paprika are widely consumed as vegetable and spice all over the world. Mostly, the cultivars grown in Asian countries are pungent, while less and non-pungent cultivars are more common in European countries. Chilli of commerce is the dried pod, while it was pericarp (outer skin of the dried fruit) for paprika.