Water sufficiently to moisten the soil to a depth a 6 inches. Light sprinklings will encourage shallow rooting of the plants. The critical period for moisture is during fruit set and fruit development. Cultural Production Practices Cultivars that produce large plants should be supported to keep the fruit of the ground to reduce fruit rot. Tomato plants can be supported by stakes or cages.
Cages are easier to use than stakes and can be made from concrete reinforcing wire.
Make sure the cage is at least 3 feet in diameter. The squares in the reinforcing wire should be 6 inches square to facilitate harvest. Tomato blossoms will drop off the plant when temperatures are high. There is no way to alleviate this problem. Spraying the plant with calcium chloride or calcium nitrate will help reduce this problem.