Common irrigation methods include furrow, sprinkler and in some areas drip irrigation. Regardless of the system used, the goal of soil water management is to maintain adequate soil moisture while avoiding extreme or excessive fluctuations. The amount of water applied during an irrigation event depends of the infiltration rate and water-holding capacity of the soil. Specific guidelines on irrigation depend on soil type, stage of growth, and local conditions (temperature, RH, wind). Soil water status should be monitored regularly to maintain consistent soil water using a resistance block such as the Irrometer Watermark sensor. Place sensors throughout the field and at several depths to get an accurate measure of soil water content. Start irrigations at 15-25% depletion during vegetative growth. During tuber initiation and tuber bulking, soil should be maintained at 80-90% of available soil water (10-20% depletion) for optimal production.