Title:Effect of Minimum Root-zone Temperature on the Growth and Production of Greenhouse Sweet Pepper Authors: A.M.R. Abdel-mawgoud; Y.N. Sassine; U.A. El-behairy; A.F. Abou-hadid ; S.O. El-abd DOI: Aff: Author Email: Keywords: Root-zone temperature; Capsicum annuum; sweet pepper; NFT; plant water use; yielde Sweet URLs:ABSTRACT-HTML | FULLTEXT-PDF | Abstract:Abstract: A greenhouse experiment was conducted to investigate the effect of minimum root-zone temperature on the growth and production of sweet pepper plants grown under un-heated greenhouse conditions. Sweet pepper plants cv. Godeon were grown in NFT system in a plastic-house. Treatments were heated nutrient solution with minimum temperature 18°C and unheated nutrient solution (control). Results showed that raising minimum root-zone temperature was effective until mid-spring and no-longer needed afterward. Plant water use, plant height, leaf area increased by heating treatment however, number of leaves was not affected. Data of yield showed that both number and weight of harvested fruits were higher and average fruit weight increased by heating treatment while dry matter content of the fruits was not affected. Dry matter production was also improved by heating treatment. Data are further discussed in relation to the interaction between greenhouse climate and root-zone conditions.