L. Mortensen

Publications108
h-index23
Citations1,803
Highly Influential Citations88
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Review: CO2 enrichment in greenhouses. Crop responses
Abstract The interest in CO 2 enrichment has risen and declined several times throughout this century. During the last few years the interest of CO 2 enrichment has strongly increased, mainly due to… Expand
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  • 7
Effects of air humidity, lighting period and lamp type on growth and vase life of roses
Abstract The rose cv. Souvenir was grown at two air humidities (65% and 90% relative humidity, RH) combined with three lighting periods (16, 20 and 24 h day−1 at a photosynthetic photon flux of 170… Expand
  • 74
  • 7
Effects of light quality on some greenhouse crops
Abstract The effect of different spectral energy distributions (light qualities) on the growth of Chrysanthemum × morifolium Ramat., Lycopersicon esculentum Mill., Lactuca sativa L. and Euphorbia… Expand
  • 168
  • 5
European aquaculture of sugar kelp (Saccharina latissima) for food industries: iodine content and epiphytic animals as major problems
Abstract There is little use of cultivated kelp including Saccharina latissima (syn. Laminaria saccharina) in the European food industry, in contrast to the extensive use of Pyropia (syn. Porphyra)… Expand
  • 36
  • 5
Effect of air humidity on growth, keeping quality, water relations, and nutrient content of cut roses.
Summary The effect of different air humidity levels on growth, keeping quality, water loss, and nutrient concentrations of the rose cultivar ‘Souvenir’ was studied in growth chambers in three… Expand
  • 35
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Effect of relative humidity on growth and flowering of some greenhouse plants
Abstract Young plants of 10 different greenhouse species were grown from 24 to 100 days at 55–60, 70–75 or 90–95% relative humidity (RH) in growth rooms. The dry weight increased significantly by… Expand
  • 49
  • 3
Effects of air humidity and K:Ca ratio on growth, morphology, flowering and keeping quality of pot roses
Abstract The pot rose cv. Parade Fiesta was grown at three air humidities (vapour pressure deficits (vpd) of 720, 470 and 220 Pa) in combination with a high (42:1), medium (1:1) and low (1:5) K:Ca… Expand
  • 31
  • 3
The interaction of daily lighting period and light intensity on growth of some greenhouse plants
Abstract The effect of lighting period and light intensity on the growth of Begonia, Chrysanthemum, Hedera, Kalanchoe and Pelargonium was investigated. The growth of the plants usually increased more… Expand
  • 27
  • 3
Critical levels for tropospheric ozone
  • 7
  • 3
Suppression of Powdery Mildew (Podosphaera pannosa) in Greenhouse Roses by Brief Exposure to Supplemental UV-B radiation.
Ultraviolet (UV)-B (280 to 315 nm) irradiance from 0.1 to 1.2 W m-2 and exposure times from 2 min to 2 h significantly suppressed powdery mildew (Podosphaera pannosa) in pot rose (Rosa × hybrida… Expand
  • 34
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