Open AccessAdaptive Fertigation System Using Hybrid Vision-Based Lettuce Phenotyping and Fuzzy Logic Valve Controller Towards Sustainable Aquaponics
Author(s) -
Ronnie Concepcion,
Sandy Lauguico,
Jonnel Alejandrino,
Argel A. Bandala,
Edwin Sybingco,
Ryan Rhay P. Vicerra,
Elmer P. Dadios,
Joel L. Cuello
Publication year - 2021
Publication title -
journal of advanced computational intelligence and intelligent informatics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.172
H-Index - 20
eISSN - 1343-0130
pISSN - 1883-8014
DOI - 10.20965/jaciii.2021.p0610
Subject(s) - aquaponics , fertigation , agricultural engineering , computer science , hydroponics , nutrient , agronomy , biology , engineering , ecology , fishery , fish <actinopterygii> , aquaculture
Sustainability is a major challenge in any plant factory, particularly those involving precision agriculture. In this study, an adaptive fertigation system in a three-tier nutrient film technique aquaponic system was developed using a non-destructive vision-based lettuce phenotype (VIPHLET) model integrated with an 18-rule Mamdani fuzzy inference system for nutrient valve control. Four lettuce phenes, that is, fresh weight, chlorophylls a and b , and vitamin C concentrations as outputted by the genetic programming-based VIPHLET model were optimized for each growth stage by injecting NPK nutrients into the mixing tank, as determined based on leaf canopy signatures. This novel adaptive fertigation system resulted in higher nutrient use efficiency (99.678%) and lower chemical waste emission (14.108 mg L -1 ) than that by manual fertigation (92.468%, 178.88 mg L -1 ). Overall, it can improve agricultural malpractices in relation to sustainable agriculture.