Drip-irrigated hydroponic system for lettuce (Lactuca sativa) production using different growing media with and without cooling system [manuscript]
| dc.contributor.author | Anthony D. Diga | |
| dc.date.accessioned | 2025-09-25T03:43:12Z | |
| dc.date.available | 2025-09-25T03:43:12Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | The study was conducted to evaluate the performance of the systems in the production of lettuce using different growing media with and without thermoelectric cooler. A total of 360 plants were grown in growing mix medium of rice hull and coco peat. Temperature and relative humidity inside and outside the greenhouse were monitored daily. Water quality parameters are also maintained at ideal levels adjusted using nutrient solution. A and B which was recorded daily from planting to harvesting. The Peltier Thermoelectric Cooler (PTEC) was used to reduce the temperature of water in the system and uses labyrinth type drip pipe to irrigate the test crop. Height, weight and number of leaves of the lettuce were gathered and treatments were analyzed statistically. However, production cost of drip hydroponic system with and without cooling system under greenhouse was also carried out. Results show that the production of lettuce in drip hydroponic systems using PTECT has reduced the temperature of nutrient solution up to 1 °C although temperature and relative humidity are beyond the ideal levels which also affected the quality of the nutrient solution. The availability of nutrients in the solution has impeded the growth and those planted in system without cooling method in terms of average yield with higher mean value of 17.17 g compared to without cooling with 17.00 g. Moreover, system with thermoelectric coolet consumed les water. In terms of water productivity, those lettuce planted in system with thermoelectric cooler receives a higher value of 6.27g/L while without cooling was 5.98 g/L which means that higher water percentage in plants has increased the crop productivity of hydroponic in tropical climate. However plant height and yield produced in the two systems are comparable in using the two growing media. It reveals that the system has produced an average yield of 6.12 kg per cycle and the production cost of the systems were amounted to Php. 450.56/kg. | |
| dc.identifier.uri | http://granarium.clsu.edu.ph/handle/123456789/581 | |
| dc.language.iso | en | |
| dc.relation.supervisor | CHITO F. SACE | |
| dc.title | Drip-irrigated hydroponic system for lettuce (Lactuca sativa) production using different growing media with and without cooling system [manuscript] | |
| dc.type | Thesis |