Greenhouse vegetable research, 1967

The responses of greenhouse tomato cultivars to CO2 enrichment during the Spring crop / D. W. Kretchman and F. S. Howlett -- Carbon dioxide enrichment--the effect on fruit size of greenhouse tomatoes / D. W. Kretchman and F. S. Howlett -- Carbon dioxide enrichment of greenhouse tomatoes as seen after three years of study / D. W. Kretchman and F. S. Howlett -- Tomato fruit culture in vitro / R. A. J. White and E. K. Alban -- The influence of diseases on fruit quality / L. J. Alexander -- Botrytis and greenhouse tomatoes / R. E. Partyka -- Control of whiteflies with systemic insecticides / J. P. Sleesman -- Sugar content of the fruit of some Ohio tomato varieties / R. A. J. White and E. K. Alba