Abstract
The effects of four commercial substrates peat; and three coir types (Cocopeat, coir-crush chips and coir-medium) on plant growth, leaf nutrient concentration, total phenols, ascorbic acid, antioxidant activity (FRAP and DPPH) and peroxidase activity were evaluated in spinach (Spinacia oleracea L. ‘Manatee’). Soil blocked spinach seedlings (five seedlings per block) were transplanted (on 16 February 2017) into to Styrofoam planting boxes (100-cm long × 25-cm wide × 10-cm high) filled with 14 L of substrate. Each planting box was irrigated daily by drip and fertilised with a complete nutrient solution. The nitrate concentration and pH in drainage water were higher in coir-chips than the other substrates. Shoot dry weight, leaf area and yield (fresh yield) in cocopeat and coir-medium were similar than those obtained in peat. Leaf nutrient concentration for the most leaf nutrients in cocopeat and coir-medium did not differ from those observed in peat. Leaf blade ascorbic acid, total phenols, FRAP, DPPH and peroxidase activity were affected by substrate type. Leaf blade of plants grown in cocopeat presented the highest value of total phenols, high values of DPPH and ascorbic acid and the lowest value of the peroxidase activity. The findings of this research suggest that the spinach grown in the different coir types may have a longer shelf life than in peat.
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Claims 11
Claim · model-written summary
Coir-chips drainage had higher nitrate concentration and pH than drainage from the other substrates.
- Taxon
- spinach
Spinacia oleraceat0 - Treatment
- coir-chipse0
- Outcome
- nitrate concentration and pH in drainage watere0
- Direction
- highere0
- Comparator
- the other substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrate concentration and pH in drainage water were higher in coir-chips than the other substrates.”
t0“spinach”
Claim · model-written summary
Spinach shoot dry weight, leaf area and fresh yield in cocopeat were similar to peat.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- cocopeate0
- Outcome
- Shoot dry weight, leaf area and yield (fresh yield)e0
- Direction
- similare0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot dry weight, leaf area and yield (fresh yield) in cocopeat and coir-medium were similar than those obtained in peat.”
t0“spinach”
Claim · model-written summary
Spinach shoot dry weight, leaf area and fresh yield in coir-medium were similar to peat.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- coir-mediume0
- Outcome
- Shoot dry weight, leaf area and yield (fresh yield)e0
- Direction
- similare0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot dry weight, leaf area and yield (fresh yield) in cocopeat and coir-medium were similar than those obtained in peat.”
t0“spinach”
Claim · model-written summary
Most spinach leaf nutrient concentrations in cocopeat did not differ from peat.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- cocopeate0
- Outcome
- Leaf nutrient concentratione0
- Direction
- did not differe0
- Qualifier
- most leaf nutrientse0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf nutrient concentration for the most leaf nutrients in cocopeat and coir-medium did not differ from those observed in peat.”
t0“spinach”
Claim · model-written summary
Most spinach leaf nutrient concentrations in coir-medium did not differ from peat.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- coir-mediume0
- Outcome
- Leaf nutrient concentratione0
- Direction
- did not differe0
- Qualifier
- most leaf nutrientse0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf nutrient concentration for the most leaf nutrients in cocopeat and coir-medium did not differ from those observed in peat.”
t0“spinach”
Claim · model-written summary
Substrate type affected spinach leaf blade ascorbic acid, total phenols and FRAP.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- substrate typee0
- Outcome
- Leaf blade ascorbic acid, total phenols, FRAPe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf blade ascorbic acid, total phenols, FRAP, DPPH and peroxidase activity were affected by substrate type.”
t0“spinach”
Claim · model-written summary
Substrate type affected spinach leaf blade DPPH and peroxidase activity.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- substrate typee0
- Outcome
- DPPH and peroxidase activitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf blade ascorbic acid, total phenols, FRAP, DPPH and peroxidase activity were affected by substrate type.”
t0“spinach”
Claim · model-written summary
Cocopeat produced the highest spinach leaf blade total phenols.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- cocopeate0
- Outcome
- total phenolse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf blade of plants grown in cocopeat presented the highest value of total phenols”
t0“spinach”
Claim · model-written summary
Cocopeat produced high spinach leaf blade DPPH and ascorbic acid values.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- cocopeate0
- Outcome
- DPPH and ascorbic acide0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf blade of plants grown in cocopeat presented the highest value of total phenols, high values of DPPH and ascorbic acid”
t0“spinach”
Claim · model-written summary
Cocopeat produced the lowest spinach leaf blade peroxidase activity.
- Taxon
- spinachSpinacia oleraceat0
- Treatment
- cocopeate1
- Outcome
- peroxidase activitye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest value of the peroxidase activity”
e1“Leaf blade of plants grown in cocopeat presented”
t0“spinach”
Claim · model-written summary
The authors suggest spinach grown in different coir types may have longer shelf life than spinach in peat.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- different coir typese0
- Outcome
- longer shelf lifee0
- Direction
- longere0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spinach grown in the different coir types may have a longer shelf life than in peat”
The same questions in other papers
growing medium · quality: phytochemicals · Spinacia oleracea (spinach)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
growing medium · nutrient: content · Spinacia oleracea (spinach)Positive and negative results
1 paper in the same direction as this paper · 4 reporting no difference from an alternative
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →growing medium · yield · Spinacia oleracea (spinach)Positive and negative results
3 papers in the same direction as this paper · 4 reporting no difference from an alternative
- positive
- positive
- positive
4 papers more in this group
See all 8 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.