However, when it comes to watering the vegetable garden, your only choice is to water.
Water affects yield, fruit size, and quality.
For example, lima, pole, and snap beans need water when they're flowering. Sweet corn should have adequate water available during silking, tasseling, and ear development. Keep cucumbers and squash well-watered during flowering and fruit development. The same advice applies for eggplant, pepper, and tomato which require water from flowering until harvest. This converts roughly to six gallons per square yard per week.