Abstract
Abstract: A greenhouse usually is a costly facility that can offer better environment for crops. Thus, to efficiently operate the facility in greenhouse is important for farmers. This study compared conventional timer control and soil moisture control method with an integrated control strategy (ICS) in wireless irrigation that consisted of microcontroller, programmable logic controller, weather sensor, soil sensor and Bluetooth module. Two two-week field experiments were conducted to grow Romaine lettuce and Red lettuce in greenhouse. Results showed plants in test group (with ICS) had higher performance in plant height, leaf number, fresh weight and dry weight. A statistic ANOVA indicated significant different in mean between the two groups (test group and check group). Result of evaluation for electricity and water usage also presents the ICS could save 90% of the electricity and water usage when compared to the timer control method.
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