Digital growth response maps for assessment of cooling requirement in greenhouse production of tomato

• Main Authors: Abd Jamil, Zakaria, Shamshiri, R., Che Man, H, Zakaria, A.J, Beveren, P.V, Wan Ismail, W.I., Ahmad, D
• Format: Conference or Workshop Item
• Language: English
• Published: 2017
• Subjects: S Agriculture (General); TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.unisza.edu.my/1665/1/FH03-AGROPOLIS-17-08757.jpg; http://eprints.unisza.edu.my/1665/

The objective of this work was to generate a series of digital growth response maps that address specific times of cooling requirement for tomato production in a tropical lowland greenhouse. Collected data from a net-screen covered greenhouse were processed by a computer model that utilized a mathematical approach to simulate tomato’s growth responses (GR) to air temperature at early growth and development growth stages. Orthogonal projection was applied on three-dimensional GR plots to create top-view sketch to demonstrate variations with respect to changes in hours and days. Results indicated that air temperature inside the greenhouse was 65% optimal at the early growth stage and 72% optimal at the development growth stage of tomato.