ISSN: 2474-8846
Authors: Shiferaw M* and Wyngard SR
Onion is one of the most important food crops and cultivated in many countries in different climatic zones, including temperate, tropical and sub-tropical regions. Yield parameters like harvest index, total bulb yield, marketable bulb yield, unmarketable bulb yield, total bulb number, marketable bulb number, unmarketable bulb number, and bulb quality parameters like small size bulb number, medium size bulb number and large size bulb number. Generally, the study showed that the mean marketable bulb number, the mean unmarketable bulb number and the mean total bulb number per dunam were calculated and found to be 17, 395.84, 24, 270.83 and 41, 666.67 respectively. Similarly the average marketable bulb yield, the average unmarketable bulb yield and the average total bulb yield per dunam were also calculated and found to be 6.18 ton/dunam, 2.44 ton/dunam and 8.62 ton/dunam respectively. On the other hand, the mean value of Small size bulb number, the mean value of Medium size bulb number and the mean value of Large size bulb number per dunam were found to be 270.83, 11, 250.00 and 250.00 respectively with the average harvest index of 70.84 %. For the potential onion growers or farmers in the study area special advice and training is essential on how to produce and get high yield of onion. Thus, onion (var. uri) growers in the study area can benefit if they are distributed well with the over all packages and production technologies. Therefore, further studies need to be conducted on various green houses, under different temperature conditions to generate more reliable information and acceptable practical evidences on onion production improvement in the Arava region.
Keywords: Onion; Yield; Yield Components; Quality Parameters
