Abstract
Soilless culture is considered the mostpromising, intensive, and sustainable approach with various advantages for plant production in terms of saving water and nutrients. It can provide consumers with sufficient and high-quality food. However, the commonly used growing substrate for soilless cultivation, coconut fiber (CF), is usually imported and expensive or even unavailable. The objectives of this study were to investigate the impact of local organic farm resources substrates on tomato (Solanum lycopersicum L.) plant growth, water relations, photosynthesis, chlorophyll fluorescence, and phytochemical analysis of fruits in a hydroponics culture system. Two growth substrates were evaluated: date-palm waste composted with animal manure (7:3 w/w) (DPAM) and date-palm trunk compost (DPT). CF and local soil were utilized as positive and negative controls, respectively, in randomized blocks. The results revealed that DPAM substrate enhanced plant growth and physiology: shoot development, leaves tissues hydration, and photosynthetic parameters, as well as chlorophyll fluorescence. However, DPT and CF improved fruit quality: water, mineral, sugar, and protein content. The antioxidant activity of the fruit extract was the greater in DPAM, reaching 13.8 mg GAEg−1 DW. This value wasdecreased in soil by 40%. Photosynthesis activity was the most important in DPAM with 12 µmol CO2 m−2 s−1, and only 6.4 µmol CO2 m−2 s−1 in the soil condition. However, regarding the non-photochemical quenching, the dissipated light energy was greater in soil (0.096 ± 0.02) than in DPAM (0.025 ± 0.04). Date-palm waste-based substrates improved tomato vegetative growth and fruit quality as compared to soil-based culture. Date-palm waste-based substrates supplemented with manure appear to be promising and less expensive alternatives to the coconut fiber substrate extensively used in soilless crops in North Africa.
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Claims 9
Claim · model-written summary
DPAM improved tomato shoot development, leaf hydration, photosynthetic parameters and fluorescence.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- DPAM substratee0
- Outcome
- shoot development, leaves tissues hydration, and photosynthetic parameters, as well as chlorophyll fluorescencee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPAM substrate enhanced plant growth and physiology: shoot development, leaves tissues hydration, and photosynthetic parameters, as well as chlorophyll fluorescence.”
t0“Tomato Production”
Claim · model-written summary
DPT improved tomato fruit water, mineral, sugar and protein content.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DPTe0
- Outcome
- water, mineral, sugar, and protein contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPT and CF improved fruit quality: water, mineral, sugar, and protein content.”
t0“Tomato Production”
Claim · model-written summary
CF improved tomato fruit water, mineral, sugar and protein content.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CFe0
- Outcome
- water, mineral, sugar, and protein contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPT and CF improved fruit quality: water, mineral, sugar, and protein content.”
t0“Tomato Production”
Claim · model-written summary
Fruit extract antioxidant activity was greatest with DPAM at 13.8 mg GAEg−1 DW.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DPAMe0
- Outcome
- antioxidant activity of the fruit extracte0
- Direction
- greatere0
- Value
- 13.8 mg GAEg−1 DWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activity of the fruit extract was the greater in DPAM, reaching 13.8 mg GAEg−1 DW.”
t0“Tomato Production”
Claim · model-written summary
Soil lowered fruit extract antioxidant activity by 40% relative to DPAM.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This value wasdecreased in soil by 40%.”
t0“Tomato Production”
Claim · model-written summary
DPAM photosynthesis was 12 µmol CO2 m−2 s−1 versus 6.4 µmol CO2 m−2 s−1 in soil.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DPAMe0
- Outcome
- Photosynthesis activitye0
- Direction
- most importante0
- Value
- 12 µmol CO2 m−2 s−1e0
- Qualifier
- 6.4 µmol CO2 m−2 s−1e0
- Comparator
- soil conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthesis activity was the most important in DPAM with 12 µmol CO2 m−2 s−1, and only 6.4 µmol CO2 m−2 s−1 in the soil condition.”
t0“Tomato Production”
Claim · model-written summary
Non-photochemical quenching was greater in soil than DPAM.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- soile0
- Outcome
- non-photochemical quenchinge0
- Direction
- greatere0
- Value
- 0.096 ± 0.02e0
- Qualifier
- 0.025 ± 0.04e0
- Comparator
- DPAMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“regarding the non-photochemical quenching, the dissipated light energy was greater in soil (0.096 ± 0.02) than in DPAM (0.025 ± 0.04).”
t0“Tomato Production”
Claim · model-written summary
Date-palm waste substrates improved tomato vegetative growth and fruit quality compared with soil culture.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Date-palm waste-based substratese0
- Outcome
- vegetative growth and fruit qualitye0
- Direction
- improvede0
- Comparator
- soil-based culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Date-palm waste-based substrates improved tomato vegetative growth and fruit quality as compared to soil-based culture.”
Claim · model-written summary
The authors propose manure-supplemented date-palm waste substrates as promising, less expensive CF alternatives.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- promising and less expensive alternatives to the coconut fiber substratee0
- Setting
- North Africae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Date-palm waste-based substrates supplemented with manure appear to be promising and less expensive alternatives to the coconut fiber substrate extensively used in soilless crops in North Africa.”
t0“Tomato Production”
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See all 20 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.