Moisture Sensor‐Controlled Irrigation for Maintaining Bermudagrass Turf1

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Abstract
The feasibility of tensiometer soil moisture sensing devices for scheduling bermudagrass (Cynodon dactylon× C. transvaalensis) turf irrigation and their impact on N fertilization practices under sub‐tropical conditions was assessed. Irrigation water savings of 42 to 95% were obtained in sensor controlled plots over conventionally irrigated plots. The greatest benefit of the sensor system was achieved during periods of frequent but unpredictable rainfall by eliminating unnecessary irrigations. Application of a wetting agent was necessary during extended dry periods to prevent localized dry spots when irrigation was limited by the sensor system to an as needed basis. Reduced irrigation by the sensor system resulted in better turf appearance and equal effectiveness of water‐soluble and slow‐release N sources.