The development of the closed-controlled greenhouse for sunflower seedlings

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A. Pramuanjaroenkij
I. Dowdoungnoi
T.O. Özyurt


Because of global warming, an average increase in temperatures during the twenty-first century has been expected to reach between 1.5 and 6.0ºC, and it maybe even higher. Small changes in temperatures can cause consequences of great amplitude upon rains, forests, and agriculture. This research studied and developed the closed-controlled greenhouse. The control system based on Arduino technology was utilized in the greenhouse to control the evaporative cooling system and the greenhouse ventilation system. This project aimed to adjust the greenhouse temperature and relative humidity for sunflower seedling. A total of 6 experiments, each experiment took 7 days. Experiments numbered 1 to 3, there was no seedling set inside the greenhouse while the seedling sets were located in the greenhouse for the last three experiments. Nine seedling sets contained 3 different types of nutrient solutions (chemical nutrient, vermicompost and bio-fertilizer solutions), and 3 different types of seedling materials, (coconut fluff, cotton balls and cultivation soil. Three replications were performed in each experiment, thus, 27 seedling sets were placed in the greenhouse. From the first and last three investigated results, the temperatures inside the greenhouse differed from the ambient temperatures in ranges of 3.83 to 4.93 and 3.64 to 4.20 Celsius, respectively. The different relative humidity values between the air inside and outside the greenhouse were in ranges of 19.29 to 33.19%RH and 17.94 and 30.86%RH, respectively. Sunflower sprout production inside the greenhouse was indicated in germination percentages and germination indexes. The germination percentages were above 80% and the germination indexes were above 12. If farmers are interested in sunflower sprout farming to earn income by using the closed-controlled greenhouse, they could take a total of 4 months as a payback period by selling the sunflower sprouts. Therefore, the development of the closed-controlled greenhouse was proved to show its ability in the sunflower sprout seedling.

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How to Cite
Pramuanjaroenkij, A., Dowdoungnoi, I., & Özyurt, T. (2019). The development of the closed-controlled greenhouse for sunflower seedlings. Journal of Research and Applications in Mechanical Engineering, 7(2), 161–170. Retrieved from


[1] Namhomchan, T. and Seripattanannont, A. PLC-based automatic control system of temperature and relative humidity in soilless culture greenhouse with an evaporative cooling system and fogging system, EAU Heritage Journal of Science and Technology, Vol. 8(1), 2014, pp. 98-111.

[2] Chaloemthoi, C., Thongkam, A. and Kongkaew, S. Machine of semi-automatic micro-irrigation control for smaller areas town house and apartments in urban community, paper presented in the 2nd Rajamangala University of Technology Suvarnabhumi National Conference, 2017, Thailand.

[3] Paka, S., Wongyai, S. and Thomya, A. Developing suitable system of temperature and humidity control formushroom’s growth at Baan Tung Bor Paan’s mushroom farm, Pongyangkok, Hangchat, Lampang, Industry Technology Lampang Rajabhat University, Vol. 7(1) , 2014, pp. 58-69.

[4] Singjaroen, B. and Sakaew, S. Temperature and humidity control system in mushroom greenhouse. Paper presented in the First Rajamangala University of Technology Suvarnabhumi National Conference, 2015, Thailand.

[5] Chimreung, S. and Chantho, T. Development of a temperature and relative humidity a control system for vegetable plantation in greenhouses, 2016, Senior Project, Faculty of Engineering, Kasetsart University, Kamphaengsaen Campus, Nakhon Pathom, Thailand.

[6] Dos Santos, P.L.F. and De Castilho, R.M.M., Germination and development of ornamental sunflower seedling in substrates, Ornamental Horticulture, Vol. 24(4), 2018, pp. 303-310.

[7] Yookate, R., Butchiw, P. and and Chinachit, W. Effects of seedling media and soaking treatment of seed on production of sunflower sprouts, Khon Kaen Agr. J., Vol. 42, Suppl. (3), 2014, pp. 926-930.

[8] Phetkeri, C., Srisang, N., Chungcharoen, T. and Srisang, S. Germinated Bambara groundnut manufacturing by hot air fluidized bed drying technique, J. Res. Appl. Mech. Eng., Vol. 4(1), 2016, pp. 87-95.

[9] International seed testing association (ISTA), 2013, International rules for seed testing, Bassersdorf, Switzerland.

[10] International seed testing association (ISTA), 2016, International rules for seed testing, Bassersdorf, Switzerland.

[11] International seed testing association (ISTA), 2010, International rules for seed testing, Bassersdorf, Switzerland.

[12] Bewley, J.D. and Black, M. Physiology and biochemistry of seeds in relation to germination, 1982, Springer-Verlag, New York.

[13] Kiatsakool, D. Studies on sowing media and seed treatments of commercial sunflower sprouts production, 2017, Research report, Chiang Mai College of Agriculture and Technology, Chiang Mai, Thailand.