Cultivation of pishac karpas - Abroma augusta Linn.

pishac karpas - Abroma augusta Linn. - Malvaceae

pishac karpas :

pishac karpas : Abroma augusta Linn.

Cultivation:

Prefers hot and humid climate. Mature seeds are collected during December-January The seeds are sown in well-prepared nursery beds or polybags during February to mid-March. For better germination seeds may be given treatment with dilute sulfuric acid for 6 minutes and then thoroughly washed. Germination occurs in 12-15 days. 

The species is of Indo-Malayan origin and occurs throughout tropical forests of India, particularly in North-East and East cost. Also found in tropical Asia, South and eastern Africa, and Australia. The species is often planted for its showy deep scarlet flowers.

Abroma augusta Linn f. is a shrubs or a small tree cultivation very in height from 1.8 to 3.6 m, but when wild, they often reach a height of 9 m; for economic cultivation the taller ones should be preferred. However, because of the nettle-like hair may cause dermatitis in susceptible persons. It grows in open areas in nature. [6] The shrub requires deep, fertile alluvial soil with good drainage. It suffers from frost and is a light-demander. Well-distributed rainfall is more important that its quantity. Propagation can be done either from seeds or stem- cutting; sometimes root suckers may be used for propagation. Since the seeds lose viability fairly quickly and their germination power is poor, fresh seeds soaked in water for 15 min at 28.c should be sown. Insecticidal treatment also improves the germination. The optimum temperature for germination is 32.c. About 24kg of seed is required to plant one hectare. Sowings are done before the rainy season. The field should be ploughed properly alone with farm manure to a fine tilth. Mucuna spp., vigna sinensis Endl., etc., are good green manures and may be ploughed in. the seed can be sown either in nurseries for transplanting, or directly in the field. A depth of 5 cm is reported to be optimum for germination, and close spacing has been recommended. 

The stems yield a fiber, and are harvested during flowering between July and dec, 100-120 days after sowing, or after the growth of the new stems following the previous harvest. For coarse fiber, the harvesting may be done as late as 6-7 months. The stems are cut 25cm above the ground for new flush. Although up to four harvests can be taken in the year, normally only two harvests are taken or sometime only one. The fibers are retting the stem for 7-15 days, is washed and beaten to make it supple and to separate the individual strands. Over-drying makes the fiber brittle. The yield of fiber varies depending upon the climatic, edaphic, and several other factors. An average yield of 735-990kg/ha been recorded


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  1. This Article says:

    This is actually useful, thanks.

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