Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments
To investigate the effect of very high hortiscatter (extreme light diffusion) on the growth of a young tomato crop, an experiment was conducted at Wageningen UR Greenhouse Horticulture in Bleiswijk. Three levels of light diffusion were compared: high diffusion (hortiscatter=0.9), medium light diffusion (hortiscatter = 0.65) and direct light or no light diffusion (hortiscatter~0). The plants were placed on elevated growing tables and grown at a high density to simulate the high LAI values of a grown-up crop. The materials allowing for the differences in light diffusion were placed on metal frames above the plants. Each material was used on two tables. D espite a careful set up, the PAR sum was not equal for all tables. This was due to position effects in the greenhouse as well as small differences in light transmission of the covering materials. When both diffusion factor and PAR sum are considered in the analysis of the results of the successive destructive harvests, the plants grown under the high diffusing lamellae showed increased leaf area and higher fresh and dry weight compared to the other two treatments. The light use effi ciency, expressed as grams of dry matter produced per mol PAR, increased with increasing Hortiscatter for the last two destructive harvests. Net photosynthesis increased also with the increase of scattering. A larger trial in separate compartments would be desirable to verify these results in real growing conditions and evaluate the effects on fruit production during a longer experiment.
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dig-wur-nl-wurpubs-5946382024-08-06 García Victoria, Nieves Baeza Romero, Esteban Franken, Geert Hemming, Silke Vletter, Gert External research report Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments 2020 To investigate the effect of very high hortiscatter (extreme light diffusion) on the growth of a young tomato crop, an experiment was conducted at Wageningen UR Greenhouse Horticulture in Bleiswijk. Three levels of light diffusion were compared: high diffusion (hortiscatter=0.9), medium light diffusion (hortiscatter = 0.65) and direct light or no light diffusion (hortiscatter~0). The plants were placed on elevated growing tables and grown at a high density to simulate the high LAI values of a grown-up crop. The materials allowing for the differences in light diffusion were placed on metal frames above the plants. Each material was used on two tables. D espite a careful set up, the PAR sum was not equal for all tables. This was due to position effects in the greenhouse as well as small differences in light transmission of the covering materials. When both diffusion factor and PAR sum are considered in the analysis of the results of the successive destructive harvests, the plants grown under the high diffusing lamellae showed increased leaf area and higher fresh and dry weight compared to the other two treatments. The light use effi ciency, expressed as grams of dry matter produced per mol PAR, increased with increasing Hortiscatter for the last two destructive harvests. Net photosynthesis increased also with the increase of scattering. A larger trial in separate compartments would be desirable to verify these results in real growing conditions and evaluate the effects on fruit production during a longer experiment. Bij Wageningen UR Glastuinbouw in Bleiswijk is het effect van zeer hoge hortiscatter (extreme lichtdiffusie) op de groei van jonge tomatenplantjes onderzocht. Drie niveaus van lichtverstrooiing zijn vergeleken: hoge diffusie (hortiscatter = 0.9), gemiddelde lichtdiffusie (hortiscatter = 0.65) en geen lichtdiffusie (hortiscatter~0). De planten zijn op potplantentafels geplaatst op hoge dichtheid om LAI-waarden van een volwassen gewas te simuleren. De materialen met verschillende lichtverstrooiing zijn op metalen frames boven de planten geplaatst. Elk materiaal is op twee tafels gebruikt. Ondanks de zorgvuldige opzet, waren verschillen in ontvangen PAR som tussen behandelingen, door positie effecten en kleine verschillen in transmissie van de gebruikte materialen. Als zowel de lichtverstrooing als de PAR som worden meegenomen in de analyse van de resultaten van de opeenvolgende gewas oogsten, blijken de planten geteeld onder de hoog diffussie lamellen, een hogere bladoppervlakte en hoger vers en droog gewicht te hebben dan de planten geteeld onder de andere twee behandelingen. De lichtbenuttingsefficientie uitgedrukt in gram droge stof per mol PAR nam toe met toenemende lichtverstrooiing. De netto fotosynthese nam ook toe met toenemende lichtverstrooiing. Een grotere proef in aparte compartimenten zou wenselijk zijn om deze resultaten in reële teeltomstandigheden te verifiëren en de effecten op productie tijdens een volledige teeltcyclus te evalueren. en Wageningen Plant Research application/pdf https://research.wur.nl/en/publications/effect-of-high-scattering-lamellae-on-growth-and-photosynthesis-o 10.18174/564877 https://edepot.wur.nl/564877 Life Science Wageningen University & Research |
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Life Science Life Science García Victoria, Nieves Baeza Romero, Esteban Franken, Geert Hemming, Silke Vletter, Gert Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
description |
To investigate the effect of very high hortiscatter (extreme light diffusion) on the growth of a young tomato crop, an experiment was conducted at Wageningen UR Greenhouse Horticulture in Bleiswijk. Three levels of light diffusion were compared: high diffusion (hortiscatter=0.9), medium light diffusion (hortiscatter = 0.65) and direct light or no light diffusion (hortiscatter~0). The plants were placed on elevated growing tables and grown at a high density to simulate the high LAI values of a grown-up crop. The materials allowing for the differences in light diffusion were placed on metal frames above the plants. Each material was used on two tables. D espite a careful set up, the PAR sum was not equal for all tables. This was due to position effects in the greenhouse as well as small differences in light transmission of the covering materials. When both diffusion factor and PAR sum are considered in the analysis of the results of the successive destructive harvests, the plants grown under the high diffusing lamellae showed increased leaf area and higher fresh and dry weight compared to the other two treatments. The light use effi ciency, expressed as grams of dry matter produced per mol PAR, increased with increasing Hortiscatter for the last two destructive harvests. Net photosynthesis increased also with the increase of scattering. A larger trial in separate compartments would be desirable to verify these results in real growing conditions and evaluate the effects on fruit production during a longer experiment. |
format |
External research report |
topic_facet |
Life Science |
author |
García Victoria, Nieves Baeza Romero, Esteban Franken, Geert Hemming, Silke Vletter, Gert |
author_facet |
García Victoria, Nieves Baeza Romero, Esteban Franken, Geert Hemming, Silke Vletter, Gert |
author_sort |
García Victoria, Nieves |
title |
Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
title_short |
Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
title_full |
Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
title_fullStr |
Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
title_full_unstemmed |
Effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
title_sort |
effect of high scattering lamellae on growth and photosynthesis of young tomato plants : smart materials crop experiments |
publisher |
Wageningen Plant Research |
url |
https://research.wur.nl/en/publications/effect-of-high-scattering-lamellae-on-growth-and-photosynthesis-o |
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