This document discusses non-timber forest products (NTFPs) and focuses on sericulture, the process of silk production. It defines NTFPs as useful substances obtained from forests that do not require tree harvesting. Common NTFPs include seeds, berries, mushrooms, foliage and medicinal plants. The document then discusses the economic importance of NTFPs, providing examples like medicinal plants, game and apiculture. It notes NTFPs can be an important source of income. The document proceeds to describe sericulture, the rearing of silkworms for silk production. It details the life cycle of silkworms, from eggs to cocoon spinning. It explains how silk is produced from the cocoons
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Sericulture, the production of raw silk by means of raising caterpillars (larvae), particularly those of the domesticated silkworm (Bombyx mori). ... Care of the silkworm from the egg stage through completion of the cocoon. Production of mulberry trees that provide leaves upon which the worms feed.
Sericulture is the silk producing agro-industry
India is the second largest silk producing country in the world after china.
Sericulture or silk farming is the rearing of silkworm for the production of silk
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As she it out, and started to wrap the silk thread around her flinger, she felt the warm sensation
When silk ran out, an larva appeared. She realized that it was this larva that produces the silk
Soon, she taught this to people and it became wide spread
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Introduction of Non Wood Forest Products
1. NON TIMBER FOREST PRODUCE
Non-timber forest products (NTFPs), also special,
non-wood, minor, alternative and secondary forest
products, are useful substances, materials
and/or commodities obtained from forests which do not
require harvesting (logging) trees.
They, seeds, berries, mushrooms, oils, foliage, medicinal
plants, fuelwood, and forage.
The United Kingdom's Forestry Commission defines
NTFPs as "any biological resources found in woodlands
except timber
These definitions include wild and managed game, fish
and insects.[4] NTFPs are commonly grouped into
categories such as floral greens, decoratives,medicinal
plants, foods, flavors and fragrances, fibers, and saps and
resins.
2. ECONOMIC IMPORTANCE
Economic importance
It is difficult to estimate the contribution of NTFPs to national or regional
economies as there is a lack of broad-based systems for tracking the
combined value of the hundreds of products that make up various NTFP
industries. Some of the importance is given below
Medicinal plants are used in many areas for medical purposes
Mushroom /guchi is an important source of income in hilly areas
Game birds and animals provide income in protected areas
Sericulture is an important cottage industry
Apiculture is important source of livelihood in hilly areas and plain area
In tropical forests, for example, NTFPs can be an important source of
income that can supplement farming and/or other activities.
Alysis of the Amazon rainforest shows in Peru found that exploitation of
NTFPs could yield higher net revenue per hectare than would timber
harvest of the same area,
Their economic, cultural and ecological value, when considered in
aggregate, makes managing NTFPs an important component
ofsustainable forest management and the conservation of biological and
cultural diversity.
3. SERICULTURE
Sericulture, or silk farming, is the rearing
of silkworms for the production of silk. Although there are
several commercial species of silkworms, Bombyx
mori (the caterpillar of the domesticated silk moth) is the
most widely used and intensively studied silkworm. Silk
was first produced in China as early as
the Neolithic period (period in the development of human
technology, beginning about 10,200 BC, according to
the ASPRO chronology, in some parts of the Middle East,
and later in other parts of the world[2] and ending between
4,500 and 2,000 BC.)
Sericulture has become an important cottage industry in
countries such
as Brazil, China, France, India, Italy, Japan, Korea, and
Russia. Today, China and India are the two main
producers, with more than 60% of the world's annual
production.
4. PRODUCTION OF SILK
Silkworm larvae are fed with mulberry leaves, and, after the
fourth moult, climb a twig placed near them and spin their
silken cocoons. This process is achieved by the worm through a
dense fluid secreted from its structural glands, resulting in the
fiber of the cocoon. The silk is a continuous filament
comprising fibroin protein, secreted from two salivary glands in
the head of each larva, and a gum called sericin, which cements
the filaments. The sericin is removed by placing the cocoons in
hot water, which frees the silk filaments and readies them for
reeling. This is known as the degumming process.[6] The
immersion in hot water also kills the silkworm pupae.
Single filaments are combined to form thread, which is drawn
under tension through several guides and wound onto reels. The
threads may be plied to form yarn. After drying, the raw silk is
packed according to quality.
5. MORPHOLOGY OF SILKWORM
The body is divided into three segments as
other insect
Head: Head is again consist of six body
segment
Thorax: Prothorax, Mesothorax and
Metathorax
Abdomen is consist of eleven segments
6. STAGES OF SILK
Stages of production[edit]
The stages of production are as follows:
The silk moth lays thousands of eggs.
The silk moth eggs hatch to form larvae or caterpillars, known as silkworms.
The larvae feed on mulberry leaves.
Having grown and moulted several times silkworm weaves a net to hold itself
It swings its head from side to side in a figure '8' distributing the salivar that will
form silk.
The silk solidifies when it contacts the air.
The silkworm spins approximately one mile of filament and completely encloses
itself in a cocoon in about two or three days. The amount of usable quality silk in
each cocoon is small. As a result, about 2500 silkworms are required to produce
a pound of raw silk)[7]
The silk is obtained by brushing the undamaged cocoon to find the outside end
of the filament.
The silk filaments are then wound on a reel. One cocoon contains approximately
1,000 yards of silk filament. The silk at this stage is known as raw silk. One
thread comprises up to 48 individual silk filaments.
Mahatma Gandhi was critical of silk production based on the Ahimsa philosophy
"not to hurt any living thing".
7. SYSTEMATIC POSITION
Class: Insecta
Order: Lepidoptera
Family: Bombycidae
Genus: Bombyx,
Species: B. mori
Life cycle of Silk worm
1. Adult 2. Larvae 3. Pupae 4. Egg
The “silkworm” is, technically, not a worm but a
moth pupa. For the sake of simplicity and
consistency, however, we will use the term
silkworm throughout this writing.]
8. SILK PRODUCTION
Commercial silk is made by boiling the intact cocoons and unwinding the
single silk strand onto reels. Only a few moths are allowed to emerge to
continue the population of silkworms. The rest are killed by being boiled
in their cocoons. “Peace silk”, also known as “vegetarian silk” is raised
and processed differently. The moths are allowed to emerge from their
cocoons to live out their full life cycle. The silk is degummed and spun
like other fiber, instead of being reeled. The resulting yam is soft, fluffy,
and light like a cloud. This is the best silk for warmth and therapeutic
use.
Silk is an animal protein fiber produced by certain insects to build their
cocoons and webs.
Many different types of silk are produced by a huge variety of different
types of insects other than moth caterpillars. Yet none of these have
been exploited for commercial purposes, though there has been basic
research into the structures of such silks. Silk is most commonly
produced by larvae, and thus largely limited to insects with complete
metamorphosis.
9. SPINNING THE COCOON
The silkworm attaches itself to a compartmented frame, twig, tree or shrub in a rearing house to
spin a silk cocoon over a 3 to 8 day period. This period is termed pupating.
Silkworms possess a pair of specially modified salivary glands called sericteries, which are used
for the production of fibroin – a clear, viscous, proteinaceous fluid that is forced through
openings called spinnerets on the mouthpart of the larva.
Liquid secretions from the two large glands in the insect emerge from the spinneret, a single exit
tube in the head. The diameter of the spinneret determines the thickness of the silk thread,
which is produced as a long, continuous filament. The secretions harden on exposure to the air
and form twin filaments composed of fibroin, a protein material. A second pair of glands secretes
a gummy binding fluid called sericin which bonds the two filaments together.
Steadily over the next four days, the silkworm rotates its body in a figure-8 movement some
300,000 times, constructing a cocoon and producing about a kilometer of silk filament.
Reeling the Filament
At this stage, the cocoon is treated with hot air, steam, or boiling water. The silk is then unbound
from the cocoon by softening the sericin and then delicately and carefully unwinding, or 'reeling'
the filaments from 4 - 8 cocoons at once, sometimes with a slight twist, to create a single strand.
As the sericin protects the silk fiber during processing, this is often left in until the yarn or even
woven fabric stage. Raw silk is silk that still contains sericin. Once this is washed out (in soap
and boiling water), the fabric is left soft, lustrous, and up to 30% lighter. The amount of usable
silk in each cocoon is small, and about 2500 silkworms are required to produce a pound of raw
silk.
Much care is needed in obtaining the cocoon as it may affect quality of silk in case of earlier or
late harvest.
Bivoltine are those species which produce silk twice in one year
Multivoltine are those species which produce silk many times in a year
10. SEPARATION OF COCOON ON THE BASIS OF QUALITY
Double cocoon: when two or more larvae form one cocoon which
result in intermingling of silk ultimately with lower quality of silk.
Reason is limited space for pupation
Dead silkworm cocoon: Sometime pupae die in the cocoon which
stain the silk
Scaf fold pressed cocoon: Deformed cocoon are difficult to obtain
silk
Stained cocoon: stained with facal material or dying of pupae
Broken ends cocoon:
Loose unit cocoon: cocoon which cannot afford slight pressure
Multilayered cocoon: Due to temperature difference in day and
night time
11. VIRAL DISEASES
Symptom:
The larvae will be sluggish with swollen intersegmantal region
The integument of diseases larvae will be fragile and brakes easily
On infury milky fluid containing many polyhedral inclusion bodies oozes out from the larval body
The diseases larvae do not settle for moult and showshining integument
The larvae appear to be restless
The dead larvae hand by hind legs head downward
Management
Sun drying of rearing appliances for one/two days Disinfection of rearing room and appliances with 5% bleaching
powder
Disinfection of worms, trays and discarding of diseased worms Ensure proper ventilation and air circulation
Provide proper bed spacing Feed the larvae with nutritious mulberry leaves
Collect and burn infected larvae, faecal matter and bed refuses Early diagnosis and rejection of infected lots
Dust the bed disinfectant, Vijetha (or) Resham Keet Oushadh on the larvae, after each moult and ½ hr. before
resumption of feeding (3 kg/100 dfl).
Spray 1% of extract of Psoralea coryleifolia on mulberry leaves, shade dry and feed worms once during third instars.
Bacterial diseases Bacteria and viruses cause the disease individually or in combination. Fluctuating temperature and
humidity and poor quality mulberry predispose the disease development.
The diseased larvae will be stunted in growth, dill lethargic soft and appear flaccid
The cephalothoracic region may be translucent
The larvae vomit gut juice, develop dysentery and excrete chain type fecus.
The larvae on death putrefy, develop different and emit foul smell
Management
Maintenance of hygienic condition Disinfection of rearing room and appliances
Disinfection of worms, trace and discarding of sick worms
Avoid injury to the worms, overcrowding of trays and accumulation of faeces in the rearing bed
Sound management, improving the rearing environment and feed stuff Feeding the larvae with healthy nutritious
leaves.
Early diagnosis and rejection of infected lots Avoid spraying commercial B. t. insecticides in nearby mulberry field.
Apply antibiotics like Streptomycin/Tetracyclin/Ampicillin
12. DISEASE OF SILKWORM Fungal diseases
White muscadine is caused by a fungus Beauveria bassiana and the green muscadine is caused by a fungus
Spicaria prasina. Aspergillosis is common in young age silkworms and the infected larvae will be lustrous and
die. Dark green (Aspergillus flavus) or rusty brown ( Aspergillus tamari)mycelial cluster are seen on the dead
body.
The diseases larvae prior to death will be lethargic and on death are flaccid
oil specks may be seen on the surface of larvae
They gradually be fome hard, dry and mummify into a white or green coloured structure
The diseases pupae will be hard, lighter and mummifies
Magagement
Sundry the rearing appliances.
Disinfect the rearing room and utensils with 5 per cent bleaching powder
Avoid low temperature and high humidity in the rearing room
Keep the rearing bed thin and dry
Early diagnosis and rejection of infected lots
Apply Dithane M45 (3 kg/100 dfls) / Vijetha supplement as disinfectant on the larvae
Disinfect rearing rooms and trays with 4 per cent pentachlorophenol to control Aspergillosis.
Protozoal diseases i. e Pebrine diseases
Diseases larvae show slow growth, undersized body and poor appetite.
Diseases larvae reveal pale and flaccid body. Tiny black spots appear on larval integument.
Dead larvae remain rubbery and do not undergo putrefaction shortly after death.
Management of Pebrine
Produce healthy eggs Disinfection of rearing room and utensils
Maintain strict hygienic conditions during rearing
Surface disinfect the layings in 2 per cent formalin for 10 minutes before incubation.
Collect and burn the diseased eggs, larvae, pupae and moths, bed refuses, faecal pellets, etc
13. DWARF PALM (NANNORHOPS RITCHIEANA)
Introduction
Dwarf Palm (Nannorhops ritchieana) is monocotyledonous plant
spe- cies belonging to family Arecaceae (Palmae). Arecaceae is a
large family of 200 - 210 genera and 2800 - 3000 species
distributed mainly in the tropical and sub-tropical regions of the
world.
Mazri is the local name of dwarf palm (Nannorhops ritchieana) It
is gregarious, usually small tufted palm, from a much
branched underground rhizome.
It is native to South Europe, North Africa and Western Asia,
distributed in Pakistan, Afghanistan and S. Persia in the
mediterrannean arid regions [3].
Mazri collection and processing of raw material into useful
products are major source of income for poor and especially for
rural women who are mostly landless fami- lies. Its processing is
the only source of personal income for women
14. Nannorrhops ritchiana (Mazari palm) is the
sole species in the genus Nannorrhops in
the palm family Arecaceae. It is native to
southwestern Asia, from the southeast of
the Arabian Peninsula east
through Iran and Afghanistan to Pakistan and
northwestern India, growing at altitudes of up
to 1600 m
15.
16.
17. GOODS OF MAZRI
Bozay(P), Punkha(S,U) Hand Fan
Tokrai (P), Tokri (S,U) Basket
Topai (P), Topi (S,U) Cap and Hat
Chabai (P), Chabbi (U,S) Hot Pot
Thaday (P), Chataee (S,U) Small mat
Raybaj (P), Jaru (U), Boowari (S) Broom
Masala (P), Ja-e-Namaz (U) Carpet or mat used
by single person to pray on
Skore (P), Changer (U,S) Tray
Saf (P,U,S) Long mat used
for prayer in mosque.
Wanr (P), Wan (U,S) Rope
18. PRODUCTS OF HONEY BEES
All bees products can be classified into two large groups: the products of
animal and plant origin.
Honey is a thick, sweet, syrupy substance and is the most basic of the honey-
bee products. Bees produce honey by collecting pollen, mead, nectar and
other sweet syrups from plants, which they enrich with substances from their
own body and place into honeycombs, where this mass matures into honey.
Honey was originally used as a sweetener and a nutritional additive, to be
increasingly used later in pharmaceutics and medicine.
An important bee product is pollen, as well. Pollen is an essential ingredient to
the life of every beehive. Without pollen, bees could not produce food for the
embryo and the “mother”, which would lead to their extinction. While honey
provides bees with fructose and glucose sugars, enzymes and mineral
ingredients, pollen provides them with sufficient protein, fats, vitamins and
minerals. Honey provides bees with the energy needed to collect pollen and
nectar.
Propolis is a mixture of wax and glutinous substances, collected by the bees
from the buds of perennial plants. Propolis is used by the bees to reinforce the
honeycomb and to seal the gaps. It performs the role of disinfecting the wax
cells and the entire beehive. Propolis contains easily volatile etheric oils
possessing clearly marked antimicrobial effects. Beeswax is used by the bees to
construct the honeycomb, where they afterwards lay their larvae and store food
reserves. Since it is very dark in a beehive, bees use the honeycomb as a
means of communication, utilizing its vibrations to communicate.
19. Bee venom is a product used by the bees as a
means of defense against many aggressors desiring
to take their riches. Its main field of application is in
medicine.
Royal jelly, perhaps the most important bee
product stimulates regular growth and development
of an organism, adds the needed strength, activates
metabolic processes in an organism, maintains a
regular functioning of the endocrinal system. By using
royal jelly, a normalization in the functioning of all
systems and organism as a whole is achieved.
20. Beeswax is a bee product, and at the same
time, in beekeeping, it is a reproductive
material. It is a product of young bees that
secrete it from their wax-producing glands.
Conditions for secreting wax are warm
weather and a good intake of both nectar
and pollen. As a reproductive material, wax is
used in beekeeping in the form of a
honeycomb base.
21. What propolis is
Apis mellifera honeybees collect resins and gums from buds or injured areas of plants. This
glue-like substance, usually dark brown in colour, is called propolis. Just as with honey and
pollen, propolis differs in composition according to the plants from which bees have been
collecting. Propolis is usually coloured dark brown, but it can also be yellow, green or red.
Apis mellifera honeybees use propolis to keep their homes dry, draught proof, secure and
hygienic. When Apis mellifera nest in the wild, for example in a hollow tree, the inside walls of
the tree appear smoothly varnished with propolis. In this way, propolis is used to seal up any
cracks where microorganisms could flourish, and its volatile oils most likely serve as a kind of
antiseptic airfreshener. In addition, bees use propolis:
Use of propolis by humans Propolis has antiseptic and anaesthetic properties and is commonly
used as an ingredient in medicines, toothpastes, oral sprays and chewing gums, and in
shampoos, soap, skin ointments and cosmetics.
Royal jelly is a milky white liquid. It is a food for bee larvae, secreted from a complex of glands
known as the "salivary gland complex" - the chief one of which is the hypopharyngeal gland of
nurse worker bees (worker bees attending the brood). It also contains some sugars and proteins
added from the worker bees' stomachs. A larva destined to become a queen bee develops in an
especially large wax cell inside which worker bees place lavish amounts of royal jelly
Royal jelly has many different components including proteins, sugars, fats, minerals and
vitamins.
22. Absconding
Absconding is the departure of adult bees from their nest, leaving behind whatever brood and food stores are in
it. Bees abscond their nests for a number of reasons including a shortage of food supply in the nest,
disturbance to the bees, excessive heat and cold or poor ventilation, old and defective and attack by pests and
diseases. A colony preparing for absconding does not defend itself against pests, ceases brood-rearing
(although the queen continues to lay eggs), has a small, scattered brood or no brood at all, has little or no food
stores. Bees also stop cleaning the hive, cannibalism is observed (that is, adult bees first devour young larvae,
then older larvae, and finally the pupae) progressive reduction in the relative number of pollen carriers entering
the hive is noted
Absconding can be prevented by:
Feeding sugar syrup (prepared by dissolving two parts sugar in one part water) into the colony every evening;
Providing shade during summer, warmth during winter, and adequate ventilation;
Removing old and defective combs from the hive and keeping the bottom board clean; and
Finally, taking up measures to control diseases and pests.
Robbing
Robbing is the condition where bees of one beehive try to rob the bees of another of their nectar and stored
honey. Uncontrolled, robbing can lead to the death of many worker bees. Robbing occur because of lack of
food in one of the colonies, especially at the end of the spring and winter seasons and happens when honey
and sugar syrup drops from the hive tools while inspecting the colon bees of both hives try to eat the honey.
Robbing can be prevented by:
Supplying brood frame from strong colonies to save weak colonies from robbing
Uniting the weak colonies
Preventing honey droppings while handling the combs
Cleaning all equipment and tools after honey harvest
Placing sugar syrup carefully inside the hive and always feeding the colonies at evening