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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 2,500 silkworms are required to produce a pound of raw silk. [12] The intact cocoons are boiled, killing the silkworm pupa.
Silkworms and mulberry leaves placed on trays (Liang Kai's Sericulture c. 13th century) Silkworms were first domesticated in China more than 5,000 years ago. [28] [29] Pupae Silkworm cocoons weighed and sorted (Liang Kai's Sericulture) Silkworm breeding is aimed at the overall improvement of silkworms from a commercial point of view.
Farming of crickets in Thailand. Insect farming is the practice of raising and breeding insects as livestock, also referred to as minilivestock or micro stock.Insects may be farmed for the commodities they produce (like silk, honey, lac or insect tea), or for them themselves; to be used as food, as feed, as a dye, and otherwise.
Morus alba, known as white mulberry, common mulberry and silkworm mulberry, [2] is a fast-growing, small to medium-sized mulberry tree which grows to 10–20 m (33–66 ft) tall. It is native to China and India and is widely cultivated and naturalized elsewhere.
Muga silkworms on a som tree. Wild silks have been known and used in many countries from early times, although the scale of production is far smaller than that from cultivated silkworms. Silk cocoons and nests often resemble paper or cloth, and their use has arisen independently in many societies. [1]
The species has broad morphological and agronomic variability, ranging in height from 0.5 to 3.5 m (1.6 to 11.5 ft), with 5–10 cm (2.0–3.9 in) stems. The polyploid plant also can reproduce through apomixis, effectively cloning itself through seed. [5] Panicles are open, with as many as 9,000 seeds per plant.
Broom grass grows in clumps and has many tangled up roots that grow to about one metre below the ground. [13] This makes it highly effective in preventing soil erosion on hillsides as the grass is less likely to fall compared to other plants and trees that would have been planted there. [13]
Axonopus is a genus of plants in the grass family, known generally as carpet grass. [6] They are native primarily to the tropical and subtropical regions of the Americas with one species in tropical Africa and another on Easter Island. [6] [4] They are sometimes rhizomatous and many are tolerant of periodic submersion.