 | PREFACE (A.E. Canham) |
| RECENT DEVELOPMENTS IN THE APPLICATION OF ELECTRICITY IN HORTICULTURE IN GREAT BRITAIN (A.W. Gray) |
| APPLICATIONS OF ELECTRICITY IN JAPANESE HORTICULTURE (Y. Minohara) |
| RECENT DEVELOPMENTS IN THE USE OF ELECTRICITY IN HORTICULTURE IN THE USA (L.E. Campbell, H.H. Klueter, H.M. Cathey, D.T. Krizek, W.A. Bailey) |
| ENVIRONMENTAL MEASUREMENTS IN A PROTOTYPE GROWING-ROOM (T. O'Flaherty, M.J. Maher, M.J. Woods) |
| MEASURING AND RECORDING ELECTRICITY IN HORTICULTURAL RESEARCH (S.Aa. Christensen) |
| OBJECTIVES OF ENVIRONMENTAL CONTROL (F.R. Frampton) |
| DEVELOPMENTS IN THE CONTROL OF THE GLASSHOUSE CLIMATE (G.H. Germing, A. van Drenth) |
| HEATING AND VENTILATION CONTROL SYSTEMS IN GLASSHOUSES: AUTOMATIC CLIMATE CONTROL "SYSTEM MEEREL" (R.B. Albers) |
| ELECTRICAL FORCING OF BELGIAN ENDIVE (CHICORY - WITLOOF) (J. de Wilde) |
| SOME EFFECTS OF SOIL WARMING ON PLANT GROWTH (M. Boxall) |
| GLASSHOUSE COOLING (P. Chaumier, J. Lebel) |
| THE THEORY OF FAN VENTILATION (L.G. Morris) |
| FAN VENTILATION OF GLASSHOUSES - PRACTICAL ASPECTS (M. Jamieson) |
| THE INFLUENCE OF THE TYPE OF FLUORESCENT LAMPS ON THE GROWTH OF YOUNG VEGETABLE PLANTS (E. Fölster) |
| SOME ASPECTS OF PLANT IRRADIATION (G. Meijer) |
| LIGHT SOURCES FOR PROMOTING PHOTOSYNTHESIS (I.J. Cooke, A.N. Burdett, S.F. Morgan) |
| LIGHT SOURCES USED IN HORTICULTURE USED IN THE U.S.A. (L.E. Campbell, H.H. Klueter, H.M. Cathey, D.T. Krizek, W.A. Bailey) |
| SUPPLEMENTARY LIGHTING OF SELECTED ANNUAL BEDDING PLANTS IN COASTAL WASHINGTON STATE (R.A. Norton) |
| THE USE OF ARTIFICIAL LIGHT IN HORTICULTURE IN THE NETHERLANDS (G.H. Germing) |
| THE COST OF ARTIFICIAL LIGHT FOR PLANT IRRADIATION (R. Vissia) |
| THE GROWING ROOM IN COMMERCIAL HORTICULTURE (A.E. Canham) |
| THE INFLUENCE OF LIGHT, TEMPERATURE, CO2 CONCENTRATION AND COMPOST ON THE DEVELOPMENT OF TOMATO PLANTS IN GROWING-ROOMS (J.V. Morgan, P.J. Dempsey, A. Binchy) |
| THE EFFECT OF ARTIFICIAL LIGHT ON THE EARLINESS AND YIELD OF TOMATOES (V.Aa. Hallig) |
| THE INFLUENCE OF SUPPLEMENTARY ILLUMINATION AND CO2 ENRICHMENT ON THE GROWTH, FLOWERING AND FRUITING OF THE TOMATO (J.V. Morgan) |
| THE GROWTH OF WINTER GLASSHOUSE LETTUCE WITH ARTIFICIAL LIGHT (W. M. Dullforce) |
| SUPPLEMENTARY LIGHTING OF YEAR-ROUND CHRYSANTHEMUMS (K.E. Cockshull, A.P. Hughes) |
| MEASUREMENT AND INDICATION OF THE ILLUMINATIONS DURING PLANT EXPOSURE (P.A. de Geus) |
| CONCLUSION (G.F. Sheard) |
