Journal article
Light‐limited photosynthesis under energy‐saving film decreases eggplant yield
Food and Energy Security, Vol.9(4), e245
2020
Abstract
Glasshouse films with adjustable light transmittance and energy‐efficient designs have the potential to reduce (up to 80%) the high energy cost for greenhouse horticulture operations. Whether these films compromise the quantity and quality of light transmission for photosynthesis and crop yield remains unclear. A “Smart Glass” film ULR‐80 (SG) was applied to a high‐tech greenhouse horticulture facility, and two experimental trials were conducted by growing eggplant (Solanum melongena) using commercial vertical cultivation and management practices. SG blocked 85% of ultraviolet (UV), 58% of far‐red, and 26% of red light, leading to an overall reduction of 19% in photosynthetically active radiation (PAR, 380–699 nm) and a 25% reduction in total season fruit yield. There was a 53% (season mean) reduction in net short‐wave radiation (radiometer range, 385–2,105 nm upward; 295–2,685 nm downward) that generated a net reduction of 8% in heat load and reduced water and nutrient consumption by 18%, leading to improved energy and resource use efficiency. Eggplant adjusted to the altered SG light environment via decreased maximum light‐saturated photosynthetic rates (Amax) and lower xanthophyll de‐epoxidation state. The shift in light characteristics under SG led to reduced photosynthesis, which may have reduced source (leaf) to sink (fruit) carbon distribution, increased fruit abortion and decreased fruit yield, but did not affect nutritional quality. We conclude that SG increases energy and resource use efficiency, without affecting fruit quality, but the reduction in photosynthesis and eggplant yield is high. The solution is to re‐engineer the SG to increase penetration of UV and PAR, while maintaining blockage of glasshouse heat gain.
Details
- Title
- Light‐limited photosynthesis under energy‐saving film decreases eggplant yield
- Authors/Creators
- S.G. Chavan (Author/Creator)C. Maier (Author/Creator)Y. Alagoz (Author/Creator)J.C. Filipe (Author/Creator)C.R. Warren (Author/Creator)H. Lin (Author/Creator)B. Jia (Author/Creator)M.E. Loik (Author/Creator)C.I. Cazzonelli (Author/Creator)Z.H. Chen (Author/Creator)O. Ghannoum (Author/Creator)D.T. Tissue (Author/Creator)
- Publication Details
- Food and Energy Security, Vol.9(4), e245
- Publisher
- John Wiley and Sons Ltd.
- Identifiers
- 991005543314207891
- Copyright
- © 2020 The Authors
- Murdoch Affiliation
- School of Environmental and Conservation Sciences
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
50 File views/ downloads
49 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.1651 Greenhouse Optimization
- Web Of Science research areas
- Agronomy
- Food Science & Technology
- Plant Sciences
- ESI research areas
- Agricultural Sciences