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GREENHOUSE TOMATO [7 fiches]

Fiche 1 2007-08-03

Anglais

Subject field(s)
  • Heating
  • Cultural Practices (Agriculture)
CONT

Radiant mulch: the answer to greenhouse heating. ... An example is given of 5400 m² melons grown in polyethylene-clad tunnels, 33% of the ground area being covered by radiant mulch consisting of 2 sheets of 400 mu m gauge flexible PVC welded together by high frequency welding. The heated water passes through the mulch and acts as an energy reserve in addition to the solar energy entering the greenhouse.

CONT

In the first greenhouse the ridges between two tomato crop rows were covered with 3 flat black PVC tubes, used as a radiant mulch, obtaining in this way a 60% covering of the soil.

Français

Domaine(s)
  • Chauffage
  • Soin des cultures (Agriculture)
DEF

Coussinet souple disposé autour de plantations sous serre, parcouru par un courant d'eau tiède et qui chauffe la terre et l'air ambiant principalement par rayonnement.

CONT

Le paillage radiant est un utile complément des capteurs dans les serres à chauffage solaire actif.

Espagnol

Conserver la fiche 1

Fiche 2 2007-04-27

Anglais

Subject field(s)
  • Plastic Materials
  • Vegetable Crop Production
CONT

Greenhouse plastics affect tomato pollination by influencing bee activity and bee loss through the ventilation systems. There is a significant difference in bee loss among plastic types.... CT plastic, one of the less commonly used greenhouse plastics, experienced less bee loss than AT Duratherm, Patilux, and both AT Bee Poly and De Klerk together.... The likely explanation for these results is that under CT plastic, bees are less able to visually detect the open vents because of the relatively small contrast between the transmitted light and the light through the vents. Our spectrophotometry results... indicate that of the plastics tested, only CT plastic allows transmission of UV light. Because of this, fewer bees fly out of these greenhouses and die during the winter months.

OBS

Greenhouse tomatoes and pollination by bumblebees. ... Bumble bee keeping in greenhouses has encountered some problems because of the escape of the bees ... through open vents in late winter and early spring. ... New understandings in insect colour vision (Backhaus 1993) have suggested ways by which the visual target of the open vents (daylight with UV) ... versus the greenhouse roof and walls (attenuated UV) can be disguised by coloured transparent flaps or blocked by screening so that the bees are not attracted and can not escape. The former would be easier and cheaper. UV light encourages the germination of spores of grey mould (Botrytis), so UV opaque plastics are favoured.

Français

Domaine(s)
  • Matières plastiques
  • Production légumière
CONT

Plastique de serre : contribution des matériaux plastiques à la maîtrise du microclimat.

Espagnol

Campo(s) temático(s)
  • Materiales plásticos
  • Producción hortícola
Conserver la fiche 2

Fiche 3 2007-04-26

Anglais

Subject field(s)
  • Plant Diseases
CONT

Tobacco etch disease [is] caused by tobacco etch virus... Tobacco etch causes a clearing of the veins and a mild mottling without much leaf distortion. Growth is only slightly retarded. The virus is transmitted by the green peach and potato aphids in Ontario, but it may be transmitted by other aphids elsewhere. When tobacco etch occurs in greenhouse crops, it usually occurs with tomato mosaic and cucumber mosaic viruses.

Français

Domaine(s)
  • Maladies des plantes
CONT

La rainure du tabac [est] causée par le virus de la rainure du tabac [...] La rainure du tabac cause un dégagement des nervures et une très légère marbrure, sans grande déformation des feuilles. La croissance n'est que légèrement ralentie. En Ontario, ce sont le puceron vert du pêcher et celui de la pomme de terre qui propagent le virus, mais dans d'autres régions, il peut être transmis par d'autres espèces de pucerons. Lorsque la rainure du tabac apparaît dans les serres, c'est d'ordinaire en association avec les virus de la mosaïque de la tomate et de la mosaïque du concombre.

Espagnol

Conserver la fiche 3

Fiche 4 2003-06-02

Anglais

Subject field(s)
  • Plastic Materials
  • Optics
  • Beekeeping
  • Vegetable Crop Production
CONT

Greenhouse plastics effect tomato pollination by influencing bee activity and bee loss through the ventilation systems. There is a significant difference in bee loss among plastic types.... CT plastic, one of the less commonly used greenhouse plastics, experienced less bee loss than AT Duratherm, Patilux, and both AT Bee Poly and De Klerk together.... The likely explanation for these results is that under CT plastic, bees are less able to visually detect the open vents because of the relatively small contrast between the transmitted light and the light through the vents. Our spectrophotometry results... indicate that of the plastics tested, only CT plastic allows transmission of UV light. Because of this, fewer bees fly out of these greenhouses and die during the winter months.

OBS

Greenhouse tomatoes and pollination by bumblebees. ... Bumble bee keeping in greenhouses has encountered some problems because of the escape of the bees ... through open vents in late winter and early spring. ... New understandings in insect colour vision (Backhaus 1993) have suggested ways by which the visual target of the open vents (daylight with UV) ... versus the greenhouse roof and walls (attenuated UV) can be disguised by coloured transparent flaps or blocked by screening so that the bees are not attracted and can not escape. The former would be easier and cheaper. UV light encourages the germination of spores of grey mould (Botrytis), so UV opaque plastics are favoured.

Terme(s)-clé(s)
  • colored transparent plastic

Français

Domaine(s)
  • Matières plastiques
  • Optique
  • Élevage des abeilles
  • Production légumière

Espagnol

Conserver la fiche 4

Fiche 5 2001-07-05

Anglais

Subject field(s)
  • Vegetable Crop Production
  • Food Industries
CONT

A new and popular tomato product is a cluster of vine-ripened fruit still attached to the stems. These products are known as ’cluster tomatoes’, ’cluster-harvested tomatoes’, ’truss tomatoes’, or ’on-the-vine tomatoes’. The term ’truss tomatoes’ is frequently used in Europe, and ’cluster tomatoes’ is used in the United States. Cluster tomatoes are currently grown as a greenhouse crop throughout the world, although some limited trials are being conducted with outdoor production.

CONT

Cluster tomatoes grown by Hollandia Produce arrive for market distribution still attached to the vine, cut from the mother plant at the proper vine-ripened time.

OBS

Fruit are bunched like grapes on the cluster. The cluster stem remains green after harvest for a long time.

OBS

Mostly used in the plural.

Français

Domaine(s)
  • Production légumière
  • Industrie de l'alimentation

Espagnol

Conserver la fiche 5

Fiche 6 2000-07-07

Anglais

Subject field(s)
  • Horticulture
CONT

Canada No. 1 Grade Standards. 108. In addition to meeting the standards for all grades set out in section 107, greenhouse tomatoes graded Canada No. 1 shall a. be uniformly coloured and free from blotchy ripening; b. be not more than slightly kidney-shaped, lopsided, elongated or angular; c. be not sharply creased or conspicuously ridged or rough; etc.

Français

Domaine(s)
  • Horticulture
CONT

Normes visant la catégorie Canada n° 1. 108. En plus de satisfaire aux normes applicables à toutes les catégories énoncées à l'article 107, les tomates de serre de la catégorie Canada n° 1 doivent : a. avoir une coloration uniforme et ne pas présenter de maturation inégale; b. être tout au plus légèrement réniformes, asymétriques, allongées ou anguleuses; c. ne pas être fortement plissées, ni visiblement striées ou rugueuses; etc.

Espagnol

Conserver la fiche 6

Fiche 7 1988-04-21

Anglais

Subject field(s)
  • Plant Diseases
CONT

The efficiency of different modes of application of five systematic nematicides... to control root-knot nematode... on tomato... was evaluated in the greenhouse using artificial inoculations.

Français

Domaine(s)
  • Maladies des plantes

Espagnol

Conserver la fiche 7

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