Abstract
Rice husk, an agricultural waste from the rice industry, can cause serious environmental pollution if not properly managed. However, rice husk ash (RHA) has been found to have many positive properties, making it a potential replacement for non-renewable peat in soilless planting. Thus, this study investigated the impact of a RHA composite substrate on the growth, photosynthetic parameters, and fruit quality of cucumber (Yuyi longxiang variety) and melon (Yutian yangjiaomi variety). The RHA, peat, vermiculite, and perlite were blended in varying proportions, with the conventional seedling substrate (peat:vermiculite:perlite = 1:1:1 volume ratio) serving as the control (CK). All plants were cultivated in barrels filled with 10L of the mixed substrates. The results from this study found that RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation and positively influenced the stem diameter, root activity, seedling index, chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), and transpiration rate (Tr) of cucumber and melon plants. Additionally, plant planted using RHA 40, the individual fruit weight of cucumber and melon found to increase by 34.62% and 21.67%, respectively, as compared to the control. Aside from that, both cucumber and melon fruits had significantly higher sucrose, total soluble sugar, vitamin C, and soluble protein levels. This subsequently improved the activity of sucrose synthase and sucrose phosphate synthase in both cucumber and melon. In conclusion, the RHA 40 found to best promote cucumber and melon plant growth, increase plant leaf photosynthesis, and improve cucumber and melon fruit quality, making it a suitable substrate formula for cucumber and melon cultivation in place of peat.
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Claims 9
Claim · model-written summary
RHA 40 significantly enhanced substrate ventilation compared with the conventional substrate.
- Treatment
- RHA 40e1
- Outcome
- substrate ventilatione1
- Direction
- enhancede1
- Comparator
- the conventional seedling substratee2
Not reportedTaxon
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e2“the conventional seedling substrate (peat:vermiculite:perlite = 1:1:1 volume ratio) serving as the control (CK)”
Claim · model-written summary
RHA 40 increased the individual fruit weight of cucumber by 34.62% compared with the control.
- Taxon
- cucumber
Cucumis sativuse3 - Treatment
- RHA 40e1
- Outcome
- individual fruit weighte3
- Direction
- increasee3
- Value
- 34.62%e3
- Comparator
- the controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e3“the individual fruit weight of cucumber and melon found to increase by 34.62% and 21.67%, respectively, as compared to the control”
Claim · model-written summary
RHA 40 increased the individual fruit weight of melon by 21.67% compared with the control.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe3 - Treatment
- RHA 40e1
- Outcome
- individual fruit weighte3
- Direction
- increasee3
- Value
- 21.67%e3
- Comparator
- the controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e3“the individual fruit weight of cucumber and melon found to increase by 34.62% and 21.67%, respectively, as compared to the control”
Claim · model-written summary
RHA 40 significantly raised sucrose, total soluble sugar and vitamin C in cucumber fruit.
- Taxon
- cucumberCucumis sativuse4
- Treatment
- RHA 40e1
- Outcome
- sucrose, total soluble sugar, vitamin Ce4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e4“both cucumber and melon fruits had significantly higher sucrose, total soluble sugar, vitamin C, and soluble protein levels”
Claim · model-written summary
RHA 40 significantly raised sucrose, total soluble sugar and vitamin C in melon fruit.
- Taxon
- melonCucumis meloe4
- Treatment
- RHA 40e1
- Outcome
- sucrose, total soluble sugar, vitamin Ce4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e4“both cucumber and melon fruits had significantly higher sucrose, total soluble sugar, vitamin C, and soluble protein levels”
Claim · model-written summary
RHA 40 significantly raised soluble protein levels in cucumber fruit.
- Taxon
- cucumberCucumis sativuse4
- Treatment
- RHA 40e1
- Outcome
- soluble protein levelse4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e4“both cucumber and melon fruits had significantly higher sucrose, total soluble sugar, vitamin C, and soluble protein levels”
Claim · model-written summary
RHA 40 significantly raised soluble protein levels in melon fruit.
- Taxon
- melonCucumis meloe4
- Treatment
- RHA 40e1
- Outcome
- soluble protein levelse4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e4“both cucumber and melon fruits had significantly higher sucrose, total soluble sugar, vitamin C, and soluble protein levels”
Claim · model-written summary
RHA 40 improved sucrose synthase and sucrose phosphate synthase activity in cucumber.
- Taxon
- cucumberCucumis sativuse5
- Treatment
- RHA 40e1
- Outcome
- the activity of sucrose synthase and sucrose phosphate synthasee5
- Direction
- improvede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e5“This subsequently improved the activity of sucrose synthase and sucrose phosphate synthase in both cucumber and melon”
Claim · model-written summary
RHA 40 improved sucrose synthase and sucrose phosphate synthase activity in melon.
- Taxon
- melonCucumis meloe5
- Treatment
- RHA 40e1
- Outcome
- the activity of sucrose synthase and sucrose phosphate synthasee5
- Direction
- improvede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“RHA 40 (RHA:peat:vermiculite:perlite = 4:4:1:1 volume ratio) significantly enhanced substrate ventilation”
e5“This subsequently improved the activity of sucrose synthase and sucrose phosphate synthase in both cucumber and melon”
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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.