The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis
The objective of this study is to investigate the performance of partially shaded solar greenhouse and water management on the growth and bioactive yield of garden eggs under micro climate management. For this reason, two local varieties of garden egg (Solanum aethiopicum and Solanum gilo) were plan...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | Energy Nexus |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772427122000870 |
| _version_ | 1798031420559458304 |
|---|---|
| author | I Okosa M.C. Ndukwu I.T. Horsfall D.O. Igbojionu |
| author_facet | I Okosa M.C. Ndukwu I.T. Horsfall D.O. Igbojionu |
| author_sort | I Okosa |
| collection | DOAJ |
| description | The objective of this study is to investigate the performance of partially shaded solar greenhouse and water management on the growth and bioactive yield of garden eggs under micro climate management. For this reason, two local varieties of garden egg (Solanum aethiopicum and Solanum gilo) were planted in a partially shaded natural convention greenhouse at Umudike South Eastern Nigeria and nurtured for four months from June to September before harvest. The plants were supplied water at 50, 70 and 100% field capacity with the internal condition of the greenhouse naturally controlled by the ambient condition. The evaluation parameters were the average monthly heat load flux, ventilation flux, transpiration rate, plant growth parameters, and phytochemicals and anti-oxidants characteristics of the fruits from the garden egg in comparison with the open field plantation. Thermal analysis showed that an increase in temperature and lower relative humidity increases the evapotranspiration rate in the greenhouse. The average sensible and latent heat load ranged from 10.9 to 121.3 W/m2 and 21.94 to 63.56 W/m2 respectively. In contrast, the average monthly ventilation flux which was deduced as a function of heat load ranged from 5.307 × 10−3 to 8.053 × 10−3 m3/m2.s. While water management and greenhouse had negative effects on most of the growth parameters of the garden egg, they significantly increased the antioxidant contents in the garden egg, particularly total phenolic contents (TPC) and total flavonoid contents of fruits which is a quality needed for a healthy body. This shows that climatic control and water management influence garden egg quality more than the growth parameters. The data from this study will enhance understanding of the influence of water stress on garden egg yield under controlled environmental conditions, which might be important in providing the needed nutrient for healthy body. |
| first_indexed | 2024-04-11T19:56:01Z |
| format | Article |
| id | doaj.art-8fad318d463c4f42a3e52d28438f0b9c |
| institution | Directory Open Access Journal |
| issn | 2772-4271 |
| language | English |
| last_indexed | 2024-04-11T19:56:01Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Nexus |
| spelling | doaj.art-8fad318d463c4f42a3e52d28438f0b9c2022-12-22T04:06:00ZengElsevierEnergy Nexus2772-42712022-09-017100132The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysisI Okosa0M.C. Ndukwu1I.T. Horsfall2D.O. Igbojionu3Department of Agricultural and Bioresources Engineering, Michael Okpara University of Agriculture, Umudike, Abia State, NigeriaDepartment of Agricultural and Bioresources Engineering, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria; Corresponding author.Department of Agricultural and Bioresources Engineering, Michael Okpara University of Agriculture, Umudike, Abia State, NigeriaDepartment of Agricultural Engineering Technology, Federal College of Land Resources Technology OwerriThe objective of this study is to investigate the performance of partially shaded solar greenhouse and water management on the growth and bioactive yield of garden eggs under micro climate management. For this reason, two local varieties of garden egg (Solanum aethiopicum and Solanum gilo) were planted in a partially shaded natural convention greenhouse at Umudike South Eastern Nigeria and nurtured for four months from June to September before harvest. The plants were supplied water at 50, 70 and 100% field capacity with the internal condition of the greenhouse naturally controlled by the ambient condition. The evaluation parameters were the average monthly heat load flux, ventilation flux, transpiration rate, plant growth parameters, and phytochemicals and anti-oxidants characteristics of the fruits from the garden egg in comparison with the open field plantation. Thermal analysis showed that an increase in temperature and lower relative humidity increases the evapotranspiration rate in the greenhouse. The average sensible and latent heat load ranged from 10.9 to 121.3 W/m2 and 21.94 to 63.56 W/m2 respectively. In contrast, the average monthly ventilation flux which was deduced as a function of heat load ranged from 5.307 × 10−3 to 8.053 × 10−3 m3/m2.s. While water management and greenhouse had negative effects on most of the growth parameters of the garden egg, they significantly increased the antioxidant contents in the garden egg, particularly total phenolic contents (TPC) and total flavonoid contents of fruits which is a quality needed for a healthy body. This shows that climatic control and water management influence garden egg quality more than the growth parameters. The data from this study will enhance understanding of the influence of water stress on garden egg yield under controlled environmental conditions, which might be important in providing the needed nutrient for healthy body.http://www.sciencedirect.com/science/article/pii/S2772427122000870Plants antiphon indicatorsDeficit irrigationGarden eggBioactive compounds |
| spellingShingle | I Okosa M.C. Ndukwu I.T. Horsfall D.O. Igbojionu The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis Energy Nexus Plants antiphon indicators Deficit irrigation Garden egg Bioactive compounds |
| title | The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis |
| title_full | The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis |
| title_fullStr | The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis |
| title_full_unstemmed | The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis |
| title_short | The combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse: an energy and yield indicator analysis |
| title_sort | combined effect of water management and environmental control on the planting of two varieties of garden egg in a partially shaded greenhouse an energy and yield indicator analysis |
| topic | Plants antiphon indicators Deficit irrigation Garden egg Bioactive compounds |
| url | http://www.sciencedirect.com/science/article/pii/S2772427122000870 |
| work_keys_str_mv | AT iokosa thecombinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT mcndukwu thecombinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT ithorsfall thecombinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT doigbojionu thecombinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT iokosa combinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT mcndukwu combinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT ithorsfall combinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis AT doigbojionu combinedeffectofwatermanagementandenvironmentalcontrolontheplantingoftwovarietiesofgardenegginapartiallyshadedgreenhouseanenergyandyieldindicatoranalysis |