Estimation of leaf and canopy photosynthesis of pot chrysanthemum and its implication on intensive canopy management

Weerakkody, W. A. P.; Suriyagoda, L. D. B.

doi:10.1016/j.scienta.2015.05.028

Cited by 9 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Temperatuurresponscurves: Idealiter moet er tussen 20 en 35 o C worden gemeten, omdat het verwachte optimum, afhankelijk van de omstandigheden, tussen 20/25 en 30 o C ligt (Adams & Fayyaz, 1979;Janka et al 2016;Weerakkody & Suriyagoda, 2015). Eerst waren de metingen onder 25 o C als gevolg van instabiele condities in de meetkamer lastig uit te voeren, maar door de wachttijd tussen de meetstappen te verlengen bleek het toch mogelijk te zijn.…”

Section: Materiaal En Methoden Fotosyntheseunclassified

De perfecte chrysant teelt 1-9 : Energiezuinige demonstratieteelten bij Delphy Improvement Centre

Raaphorst¹,

Elings

Gelder³

et al. 2020

View full text Add to dashboard Cite

Bij het Delphy Improvement Centre zijn in 2017 en 2018 met financiering van Kas als Energiebron, ChrIP en leveranciers, negen chrysantenteelten uitgevoerd met de volgende doelstellingen: • Een warmtegebruik van maximaal 15 m 3 /(m 2 .jaar) aan aardgasequivalenten (ae). • Deze warmte dient volledig te worden onttrokken uit warmteoogst (koeling) en de elektriciteit voor de warmtepomp. • Een CO 2-gebruik van 25 kg/(m 2 .jaar). • Een elektriciteitsgebruik voor belichting van 121 kWh/(m 2 .jaar). • 5% meer productie ten opzichte van de praktijk. De belangrijkste middelen om deze doelstelling te bereiken zijn hybride belichting, diffuus glas met 2 ARcoatings, een extra energiedoek, luchtbehandelingskasten, een warmtepomp en bronpompen. De teelten zijn uitgevoerd onder de naam 'De Perfecte Chrysant' (DPC). De gerealiseerde gebruiken van warmte blijken lager te zijn dan de doelstelling. De hoeveelheid geoogste warmte (koeling) is juist veel hoger en de belichting is in de loop van het project steeds vaker ingezet. Verneveling heeft de hoeveelheid warmteoogst verhoogd. De 5% hogere productie is slechts bij drie van de negen teelten gelukt en na aanvankelijke kritiek is de kwaliteit van de takken in de loop van het project steeds beter beoordeeld. Geconcludeerd wordt dat het technisch mogelijk is om met een investering in luchtbehandelingskasten, warmtepomp en bronpompen, een extra scherm en hybride belichting chrysanten te telen zonder gas (behalve voor het stomen).

show abstract

Section: Materiaal En Methoden Fotosyntheseunclassified

De perfecte chrysant teelt 1-9 : Energiezuinige demonstratieteelten bij Delphy Improvement Centre

Raaphorst¹,

Elings

Gelder³

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Here, we aimed to obtain insight into the ability of leaves, initiated and matured under different narrow‐band spectral light qualities, to adapt to a dynamic diurnal light regime in greenhouses. We selected two plant species with contrasting light saturation levels under natural conditions: Chrysanthemum with light saturation levels between 500 and 600 μmol m −2 s −1 at leaf level (Weerakkody and Suriyagoda ) and Spathiphyllum with light saturation levels between 200 and 300 μmol m −2 s −1 (Neretti ). We pretreated them with relatively low intensities of monochromatic blue and red, its dichromatic combination (red + blue) and multispectral white light.…”

Section: Introductionmentioning

confidence: 99%

Spectral quality of monochromatic LED affects photosynthetic acclimation to high‐intensity sunlight of Chrysanthemum and Spathiphyllum

Zheng

Steppe

Labeke

2020

Physiologia Plantarum

View full text Add to dashboard Cite

Vertical farming using light‐emitting diode offers potential for the early production phase (few weeks) of young ornamental plants. However, once transferred to the greenhouse, the photosynthetic acclimation of these young plants might depend on this initial light regime. To obtain insight about this acclimatization, Chrysanthemum (sun species) and Spathiphyllum (shade species) were preconditioned in growth chambers for 4 weeks under four light qualities: blue (B), red (R), red/blue (RB, 60% R) and white (W) at 100 μmol m−2 s−1. Monochromatic light (R and B) limited leaf development of both species, which resulted in a lower leaf mass per area when compared to multispectral light (RB for Chrysanthemum, RB and W for Spathiphyllum). R‐developed leaves had a lower photosynthetic efficiency in both species. After the light quality pretreatment, plants were transferred to the greenhouse with high‐intensity natural light conditions. On the first day of transfer, R and B preconditioned leaves of both species had an inhibited photosynthesis. After 1 week in natural light condition, rapid light curve parameters of Chrysanthemum leaves that developed under B acclimated to sunlight had a similar level than RB‐developed leaves unlike R‐leaves. Spathiphyllum leaves showed a decrease in maximum electron transport rate and this was most pronounced for the R pretreatment. After 1 month, R‐preconditioned Chrysanthemum had the lowest dry mass, while no effects on the dry weight of Spathiphyllum with respect to the pretreatments were observed. Light quality during preconditioning affected the leaf ability to acclimate to natural high light intensities in greenhouse environment.

show abstract

“…In addition, numerous sensing tools (for example, infrared gas analysers) enable the direct assessment of a number of physiological characteristics in plants. Many of them need direct contact with the crop, which results in more exact readings; nevertheless, the measuring method takes a unique path, making this technique time-consuming in most cases [52].…”

mentioning

confidence: 99%

A Review of Robots, Perception, and Tasks in Precision Agriculture

et al. 2022

View full text Add to dashboard Cite

This review reports the recent state of the art in the field of mobile robots applied to precision agriculture. After a brief introduction to precision agriculture, the review focuses on two main topics. First, it provides a broad overview of the most widely used technologies in agriculture related to crop, field, and soil monitoring. Second, the main robotic solutions, with a focus on land-based robots, and their salient features are described. Finally, a short case study about a robot developed by the authors is introduced. This work aims to collect and highlight the most significant trends in research on robotics applied to agriculture. This review shows that the most studied perception solutions are those based on vision and cloud point detection and, following the same trend, most robotic solutions are small robots dedicated exclusively to monitoring tasks. However, the robotisation of other agricultural tasks is growing.

show abstract

Estimation of leaf and canopy photosynthesis of pot chrysanthemum and its implication on intensive canopy management

Cited by 9 publications

References 28 publications

De perfecte chrysant teelt 1-9 : Energiezuinige demonstratieteelten bij Delphy Improvement Centre

De perfecte chrysant teelt 1-9 : Energiezuinige demonstratieteelten bij Delphy Improvement Centre

Spectral quality of monochromatic LED affects photosynthetic acclimation to high‐intensity sunlight of Chrysanthemum and Spathiphyllum

A Review of Robots, Perception, and Tasks in Precision Agriculture

Contact Info

Product

Resources

About