Karadeniz Bölgesinde turfandacılığın yeri ve önemi hergeçen gün artmaktadır. Bu amaçla kullanılan örtü materyalleri ve konstrüksiyon sisteminde yapılan uygulamalar gelişmekte ve bölgesel özelliklere bağlı uygulamalar yaygınlaşmaktadır. Bu çalışmada da Samsun ilinde yaygınlaşan turfanda sebze yetiştiriciliğinde ilk sıralarda yer alan hıyar, biber, patlıcan ve domates bitkilerinin büyüme ve gelişmesine farklı örtü materyalleri (normal Polietilen plastik ve Antifog katkılı plastik) ve farklı havalandırma uygulamalarının etkisi araştırılmıştır. Farklı örtü materyallerinin bitki büyüme ve gelişmesine etkisi önemli bulunmuş (p

Lately, the importance of growing vegetables out of normal growing season has been increasing. For this reason, different applications in terms of greenhouse construction and covering materials depending on reagional climatic characteristics have been developing. In the present study, the effects of different covering materials (normal plastic film and plastic film fortified with antifog substances) and ventilation gaps on the growth and development of cucumber, pepper, aubergine and tomato that are generally grown in the Black Sea Region were investigated. The effect of different covering materials on the growth and development of tried plants was found to be significant (p<0.05). However, better results were obtained from the application of plastic film fortified with antifog substances than the application of normal plastic film as covering material. The effect of roof ventilation on plant growth and development was also found to be significant (p<0".05). In connection with this, plant stem diameter, plant height, height increase rate, leaf appearance rate and flower bud appearance rate were affected for the plants grown in the greenhouses with roof ventilation depending on temperature. When plant growth and development were taken into consideration, plastic greenhouses which were covered with plastic films fortfied with antifog substances and fixed with roof ventilation suitable to the region were recommended to the growers.