| ABSTRACT |
Naturally Ventilated Tropical Greenhouse Structure was specially designed and constructed for commercial Harumanis Mango (Magnifera Indica cv.) production in tropics. The structure was made of galvanized steel tube structural frames, transparent polyethylene sheet roofing and polyethylene woven insect-screen netting side cladding. Moreover, the structure was made naturally ventilated that exchange inside and outside air that reduces temperature and humidity and also maintaining carbon dioxide. The structure also transmits Photosythetical Active Radiation (PAR) for plant photosynthesis process, protects cultivation area against rain, wind, weeds, pests, insect and diseases. Irrigation with fertigation system was also provided in the greenhouse structure. Naturally Ventilated Tropical Greenhouse Structure enabled cultivation of high value Harumanis mango production all year round as compared to single - seasonal conventional open field production
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