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University of Agricultural Sciences, Dharwad

The University of Agricultural Sciences, Dharwad was established on October 1, 1986. The University has 5 Colleges, 27 Research Stations, 6 Agriculture Extension Education Centers, 6 Krishi Vigyan Kendras and ATIC. The University has its jurisdiction over 7 districts namely Bagalkot, Belgaum, Bijapur, Dharwad, Gadag, Haveri, and Uttar Kannada in northern Karnataka. Greater diversity exists in soil types, climate, topography cropping and farming situations. The jurisdiction includes dry-farming to heavy rainfall and irrigated area. Important crops of the region include sorghum, cotton, rice, pulses, chilli, sugarcane, groundnut, sunflower, wheat, safflower etc. The region is also known for many horticultural crops. Considerable progress has been registered in the field of education, research and extension from this University.

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Subject: Textile and Apparel Designing × Author: Avaradi, Rashmi D ×
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    ThesisItemOpen Access
    DYEING OF UAS SHEEP BREED WOOL WITH ACACIA CATECHU LEAVES
    (University of Agricultural Science, Dharwad, 2003) Avaradi, Rashmi D; Mahale, Geeta
    "The present study was carried out during the period 2002-03. The main objectives of the study were to optimize the dyeing conditions with Acacia catechu leaves, to ascertain the physical properties of UAS Sheep breed wool yarn dyed with Acacia catechu leaves and to assess the colourfastness of the dyed samples. UAS sheep breed wool was selected from Poultry, Sheep and Goat Farm, Main Research Station, University of Agricultural Sciences, Dharwad. The wool sample was cleaned, cdrded and spun into yarn at Wool Research Association, Thane, Mumbai. Later it was scoured and dyed with Acacia catechu leaves extract. The effect of scouring and dyeing on wool was determined by assessing the physical parameters of wool yarn before scouring and after scouring and dyeing. Colourfastness testes to washing, rubbing, sunlight and perspiration were carried out and assessed using grey scale and standard wool pattern. The results obtained were statistically analysed using completely randomized design and correlation test. Results revealed that 6 per cent dye concentration, 45 minutes dye extraction time, 45 minutes dyeing time and 15 minutes mordanting time were optimized at 540?. wavelength for dyeing wool with Acacia catechu leaves. Scouring enhanced the dye absorption rate. The strength, elongation and yarn count of scoured and dyed samples in acidic media were found to be decreased compared to the undyed samples. Colourfastness of all the dyed wool samples were ranged between good to excellent. Wool sample premordanted with 1 per cent ferrous sulphate exhibited excellent colourfastness in acidic media."