Acclimatization and performance of eleven varieties of tomato were evaluated for rainy season production under low cost plastic shelter. Randomized complete block design with three replications was employed. Varieties Melkashola (375.68 qt/ha) and Melksalsa (386.68 qt/ha) performed best and produced significantly (P< 0.05) high marketable fresh tomato yield per hectare. Moreover, yield per plant was significantly high from these two varieties 1.7 kg per plant from variety Melksalsa and 1.6 kg per plant for variety Melkshola. Percent non- marketable fruit number was also significantly low from Variety Melkshola (20.92%), while the highest non-marketable fruit number was recorded from varieties Fetan (36.45%) and Eshet (35.71%). On the other hand, varieties Eshet (5.98cm) and ARP (5.65cm) had significantly high fruit width.

Melkasalsa and Melkashola suited most to plastic rain shelter production bringing about the highest performance in yield. Rainy season tomato production under plastic shelter would therefore contribute towards improving fresh tomato supply during the rainy season benefiting both actors involved in this sector including growers, consumers, traders and brokers. This practice would assist in avoiding fungicide application thereby protecting the environment from hazardous effect of chemicals. Plastic shelter gives protection to tomatoes from natural hazardous such as hail and strong wind. This practice of tomato production with high yield and good quality will enable growers to fetch high price from rainy season tomatoes and enhance year round fresh tomato supply.