Studies on locating moisture sensor for automatic regulation of furro irrigation systems

摘要

Field trials were conducted to find out an optimum location, depth and distance from furrow head, to install an electronic tensiometer to facilitate furrow irrigation automatically. Response time of the sensor obtained from the study revealed variouscombinations of depth and distance suitable for sensor placement for three discharge rates, viz. 0.5 lit/sec, 1.0 lit/sec and 1.5 lit/sec. The electronic tensiometer was later used to automatically irrigate maize according to a set soil moisture tension.