Determining the effects of light and nutrients on gorwth, yield and energy comsumption of lettuce using ground-based remote sensing in NFT hydroponics | |
| Author | Chaeril, Nia Kurniaty |
| Call Number | AIT Thesis no.AE-17-04 |
| Subject(s) | Hydroponics Lettuce--Nutrition Agriculture--Energy consumption Agriculture--Remote sensing |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Agricultural Systems and Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Light and Nitrogen as the growth factors for the lettuce grown hydroponically were studied with the aim at estimating their effects on growth, yield, and energy consumption performances. Two experimental light treatments, i.e., natural light and artificial light - consisting of four nutrient solution concentrations were conducted in this research. The natural light treatment was held inside the greenhouse. Besides, the artificial light treatment performed inside the dark room. In the artificial light treatment, the red (623-673 nm), cyan (466-532 nm), and blue (427-478 nm) used to substitute the sunlight. The photoperiod was provided for 14 hours in the light and the dark of 10 hours. The results indicated that the performances of the low-cost digital RGB camera to estimate the Nitrogen obtained satisfactorily result. The highest estimated nitrogen values were obtained with the combination of natural light (L1) and the second nutrient solution concentration (N2 = N (230), P (31), K (234), Ca (160), Mg (34), Fe (2.5) mg L-1 ). Fluctuated trend of electrical conductivity was found during the cultivation with range 876-1332 µS cm-1 . The EC level of the nutrient solution decreased relatively with the increasing the nitrogen content and yield. Plant physiological indices, such as plant height and dry root weight acquired significant different. Regarding yield, the plant grown in the RCB LED light was good for the high level of nutrient solution concentration. The use of RCB light as the artificial light was having high operating expenses. However, it could be utilized if the availability of sunlight is not sufficient for cultivation without reducing the quantity of yield and create any problem during the growth period. |
| Year | 2017 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural Systems and Engineering (ASE) |
| Chairperson(s) | Soni, Peeyush; |
| Examination Committee(s) | Salin, K.R.;Loc, Thai Nguyen; |
| Scholarship Donor(s) | Indonesian Agency for Agricultural Research and Development (IAARD); |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2017 |