The pot experiment was conducted in Bangladesh; geographical location is 20º 34'N- 26º38'N and 88º01'E-92º41'E, mean humidity 79.5%, annual rainfall (average) 2000 mm and maximum annual temperature 36ºC and minimum 12ºC. The annual precipitation varies from 1500 mm in the north to 5700 mm in the northeast. The experiment was conducted in the Dhaka district and during the periods from (November-March) in 2 subsequent years. Seven varieties of tomato plants namely, Marglobe, Ruma VF, BR-1, BR-2, BR-3, BR-4, and BR-5 were the test crops. The seeds of two varieties namely Marglobe and Ruma VF were collected from Bangladesh Agriculture Development Corporation (BADC) farm and five varieties namely BR-1, BR-2, BR-4, and BR-5 from Bangladesh Agriculture Research Institute (BARI) at Gazipur. The two varieties, BR-4 and BR-5 were summer varieties but could be cultivated throughout the year, i.e. both in winter and summer. The soil used in this experiment was of the Demra series under the Madhupur tract (According to the Reconnaissance soil survey report of Dhaka district, 1965, reviewed in 1987). Soil samples were collected at a depth of 0-15 cm from Katchpur at Demra, Dhaka. For physical and chemical analysis, collected soil samples were air-dried, ground to pass through a 2 mm sieve, and then mixed thoroughly to make a composite sample. Dry roots, grasses, and other vegetative residual parts were discarded from the soil. The general physical and chemical characteristics, of the soil, were: Textural class- Silty clay loam. Sand-5.8%, silt- 60.2%, clay-34.0%, Moisture at field capacity- 33%, Maximum water holding capacity-46%, Hygroscopic moisture-1.40%, Porosity-49%, Bulk density-1.27g/cc, Particle density-2.57g/cc, pH- 7.2, EC-143µS, OM1.14%, CEC-17.9 meq / l00 g soil and N-0.06%. The experiment was conducted under natural conditions in a completely randomized block design with four treatments and three replications at the net house of the Department of Soil, water environment, Dhaka University. Varieties namely Marglobe, Ruma VF, BR-1, BR-2, BR-4, and BR- 5 were used in this experiment in 2 subsequent years. Earthen Pots each containing 8 kg of soil were used in this experiment. The height of the pots was 23 cm, the diameter 29 cm, and the height of the soil in the pots was 21 cm. The pots were rearranged once a week so that the plants could receive uniform light and temperature. Water was added to maintain a constant level of 40, 70, and 100 percent of the field capacity throughout the experimental period. Water levels were maintained by applying water on a daily basis. Compensating the loss of water obtained by weighing the pots on a top balance. The seeds were sown (Bangladesh Agriculture Development Corporation) at BADC farm and after 24 days of germination two healthy seedlings of uniform size were transplanted to each pot. After transplantation plants were shaded for five days to protect them from sunlight. The number of plants was thinned to one after one week of transplantation. Three levels of water stresses were imposed in these experiments at the rate of 100%, 70%, and 40% of the F.C. in order to investigate the effect of different moisture regimes on osmotic adjustment, relative water content, water use efficiency, moisture content of fruit and fruit quality of plants. Water was added to maintain a constant level of 40, 70, and 100 percent of the field capacity throughout the experimental period. Water levels were maintained by applying water on a daily basis. Compensating the loss of water obtained by weighing the pots on a top balance. In the experiment, there was no loss of water through drainage as well as no extra gain of water other than the estimated irrigation water. In order to prevent the evaporation loss of water from the soil, the pots were well covered with aluminum foil. The amount of water lost through transpiration and evaporation, if any, was supplemented by the addition of water through the funnel daily in the evening. The moisture regime was maintained by weighing the pots on a top balance at a regular interval till the final harvest (November-March). Compensation was allowed for the gain in weight due to the vegetative growth of the plants. Range of water added/day: For 100% F.C.=250- 350ml/day,For 70% F.C.200-250m1/day, For 40% F.C.=150-200ml/day.