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- Title
A Study on Physico-Mechanical Properties of Onion Varieties Under Koppal District, (Karnataka).
- Authors
SHOBA, H.; RAJESHWARI, N.; NAGARAJA, G.
- Abstract
The physico-mechanical properties of four popular cultivable onion varieties i.e., Ballari red, Arka kalyan, Satara (local verity), Kalasa (local variety) in Koppal (Karnataka)were studied to form an important database for designing of storage structures, cleaning, grading, sorting and harvesting equipments. The equatorial diameter of all size category Ballari red onion variety ranged from 4.01 to 8.35 cm, polar diameter ranged from 3.82 to 6.62 cm and thickness of Ballari red onion variety ranged from 1.25 to 2.51 cm where as the lowest values of equatorial diameter was observed in Kalasa (local variety) i.e., 3.2 to 7.12 cm, polar diameter ranged from 2.89 to 5.12 cm and thickness from 1.22 to 2.01 cm, respectively. Shape index of three out of four was oval in shape. The geometric mean diameter (Dgm) and arthematic mean diameter (Dam) of large, medium and small size verities as Ballari red, Arka kalyan, Satara, Kalasa had 2.65 to 5.09, 2.5 to 4.58, 2.35 to 4.43 and 2.23 to 4.13 cm, respectively. The highest mean value of bulk density from 678.9 to 390.42 kg/cm³ was observed in Ballari red onion followed by Arka kalyan of 662.7to 390.42 kg/cm³, Satara 628.4 to 390.23 kg/cm³, Kalasa 618.59 to 385.24 kg/cm³ and highest mean value of angle of repose which was observed in Ballari red i.e, 37o (large size) and lowest was observed 20.90o in Kalasa (small size) variety.
- Subjects
ONION varieties; ONION growing; PLANT size; PLANT growth; ONIONS
- Publication
Current Agriculture Research Journal, 2017, Vol 5, Issue 3, p381
- ISSN
2347-4688
- Publication type
Article
- DOI
10.12944/CARJ.5.3.18