M Poornima asssignment silviculture of indian trees.pptx

M Poornima asssignment silviculture of indian trees.pptx

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  Dalbergia latifolia Presented by:M POORNIMA F/052/19 SILVICULTURE OF INDIAN TREES
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  Scientific classification Kingdom: Plantae Clade:Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Rosids Order: Fabales Family: Fabaceae Genus: Dalbergia Species: D. latifolia
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  BOTANIC DESCRIPTION • Dalbergialatifolia is predominantly a single-stemmed deciduous tree with a dome shaped crown of lush green foliage. Nitrogen fixing tree • The trees reach a height of 20-40 m with a girth of 1.5-2m. • The bark is gray, thin with irregular short cracks, exfoliating in fibrous longitudinal flakes. • Leaves are alternate, odd-pinnate with 5-7 unequal sized leaflets originating from the same rachis. • Leaflets are broadly obtuse, dark green above and pale below. • Flowers are white in axillary panicles, 0.5-1 cm long. • The brown pods are oblong-lanceolate and pointed at both ends. They contain 1-4 smooth brown seeds and do not open at maturity. .
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  BIOPHYSICAL LIMITS Altitude: 0-1500m It survives maximum temperatures of 37°-50° C minimum temperature of 15° – 0° C, relative humidity of 40-100 percent. Mean annual rainfall: 750-5000 mm Soil type: The species grows on a variety of soil formations . It grows best on well-drained, deep, moist soils. D. latifolia is common on deep loams or clays containing lime. It also grows well on black cotton soils. Shallow dry soils and poor drainage stunt tree growth.
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  DISTRIBUTION • The naturalrange of Dalbergia latifolia stretches from the sub- Himalayan tract to the southern tip of India and the island of lava in Indonesia . Its best growth occurs in the Western Ghat forests of Karnataka, Kerala, and Tamil Nadu. It has been introduced to Burma, Sri Lanka, Nepal, Nigeria, and Kenya • VARIETIES. • In Java, two varieties of D. latifolia are recognized. The native variety, called sonokeling, seldom produces seeds. The naturalized variety of Indian-origin, called sonobrits, produces seed yearly.
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  SILVICULTURAL CHARACTERS It isa moderate light demander Frost tender. Seedling is shade tolerant but sensitive to drought and fire. In maturity, it is tolerant of drought and ground fire, but susceptible to crown fiire It coppices well and produces root-suckers in large numbers.
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   Leaf Fall :February--March  Flowering:January--March  Fruiting: January--April  Seed Collection time :November - March  No. of Seeds per kg : 18480 / Kg  Germination percentage : 65%  Viability : Upto 6 months, can be extended to 9-12 months by drying seeds to 8% moisture content and storing them in airtight containers, however, germination will decrease to 30-40%.  Seed Treatment : Soaking in cold water for a 24 hours.
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  PROPOGATION  Under natural conditions: by seed root sucker or coppice.  Artificial reproduction : by seed, root cutting, and stump sprout. ROOT CUTTINGS should be taken from trees that are at least 5 years old , length of cuttings is 20 cm , diameter 1-2 cm.  Keep cuttings at room temperature for 3 days before planting .18 cm of the cutting planted below the soil surface with 2 cm above. Transplant to the field after 6 months in the nursery  BY STUMP SPROUTS: Stumps are made from seedlings of seed or cutting origin. Stump roots and shoots should be 4.5 cm and 2.5-4.0 cm long, respectively. Root-collar diameter should be 0.5-1.5 cm . Planting must coincide with heavy rains or survival will be low  Trees are commonly attacked by fungi (Fusarium spp.) , die backdisease of seedling caused by Colletotrichum capsici ,termites and browsing wild animals
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  NURSERY PRACTICE Pretreated Seedsare sown in nursery in mother bed in March, shading regular watering and weedings have to be done during summer to enable seedlings to attain good plantable size by July. If polythene bag plants are to be planted, seed should be sown either directly in the bag or pricked out from nursery mother bed when they are 5 to 8cm high. Germination starts from 7th day onwards. It will grow more than 10 feet tall in 6 months in 30x 45 cm bag. Planting is done in field in pits dug 1.2m² or 1.8 m².
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  MANAGEMENT  As purestands, D. latifolia is spaced at 1.2 x 1.2 to 1.8 x 1.8 m or 2 x I to 2.5 x I m . Wider spacing may produce crooked stems.  For agroforestry systems spacings of 3 x I to 6 x 2 m are common .  It is generally managed by clear felling followed by artificial regeneration.  After planting or direct sowing, regular weeding is necessary until trees dominate weed competition. loosening soil around seedlings also improves growth.  Weeding and soil loosening should be done before weeds become dense. The sudden removal of heavy weed growth from around seedlings may cause death from exposure
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  USES Tannins from thebark are used to produce medicines for the treatment of diarrhoea, worms, indigestion, and leprosy. These tannins also produce an appetizer. The wood is fragrant and commands a high price. It is used to make premium- grade furniture, panelling, veneers, and interior and exterior joinery. Secondary uses of the wood include; knife handles, musical instrument calico-printing blocks, mathematical instruments, agricultural implements, and boats keels and screws
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  FLOWER • Feature 1 •Feature 2 • Feature 3 Tree • Feature 1 • Feature 2 • Feature 3
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  Pod Leaf
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  THANK YOU