Yield prediction of hydroponic grown lettuce base on nutrient uptake in plant factory
Start Page
125
End Page
132
ISBN
978-986-05-8228-4
Date Issued
2018-12
Date
2018-12
Author(s)
Shih-Wei Kong
Wei Fang
Abstract
The purpose of this study was to develop a yield prediction model by measuring amount of nutrient uptake in plant factory for hydroponically grown lettuce. An automated system was developed to control pH and Electrical Conductivity (EC) of nutrient solution and measuring the amount of nutrient absorbed. The integral nutrient uptake in full day, light period and dark period were compared with fresh mass of lettuce after harvested. The result shown the integral nutrient uptake in full day had best linear relationship (R2: 0.95) with the fresh mass harvested. This system can predict the fresh mass of lettuce harvested after 3 days of pure water treatment for nitrate control, and can also be used as early warning mechanism when the nutrient absorbed are low compare with normal conditions.
Event(s)
產業現況及研究發展國際設施研討會
Subjects
nutrient uptake
plant factory
yield prediction
lettuce
hydroponics
Publisher
農業試驗所
Type
book part
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Name
no214-19.pdf
Size
183.52 KB
Format
Adobe PDF
Checksum
(MD5):4262642ba027f8cd623f4b13821d391b