Abstract
Abstract Technology to improve soil quality is required on degraded uplands. This study aimed to determine the effect of mulch and soil ameliorant on soil quality and shallots yield. The study was conducted in March to June 2017 in Garut Regency, West Java Province, Indonesia. The experimental design used was splitplot design with 3 replications. Main plot was type of mulch consisted of 3 treatments (no mulch, plastic, straw), while sub-plot was soil ameliorant application consisted of 5 treatments: farmer practise (B-1), B-1 + recommended fertilizer, B-1 + 5 t ha −1 dolomite, B-1 + 5 t ha −1 biochar, B-1 + 5 t ha −1 dolomite + 5 t ha −1 biochar). The results showed that dolomite increased pH, K2O, P2O5, Ca-exch and base saturation. Straw mulch and soil ameliorant increased total pore space, aeration pore, aggregate stability index and permeability. The highest yield (18.8 t ha −1 ) was achieved at treatment without mulch with farmer practise plus biochar (5 t ha −1 ) and plastic mulch with farmer practise plus dolomite (5 t ha −1 ) and biochar (5 t ha −1 ). The incremental yield was about 15.0% compared to farmer practise. The research treatments were financially feasible with ratio R/C of 1.5 - 2.4.
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Claims 8
Claim · model-written summary
Dolomite increased soil pH, K2O and P2O5.
- Taxon
- shallots
Allium cepa var. aggregatumt0 - Treatment
- dolomitee0
- Outcome
- pH, K2O, P2O5e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dolomite increased pH, K2O, P2O5, Ca-exch and base saturation”
t0“shallots farming”
Claim · model-written summary
Dolomite increased exchangeable calcium and base saturation.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- dolomitee0
- Outcome
- Ca-exch and base saturatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dolomite increased pH, K2O, P2O5, Ca-exch and base saturation”
t0“shallots farming”
Claim · model-written summary
Straw mulch and soil ameliorant increased total pore space and aeration pore.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- Straw mulch and soil ameliorante0
- Outcome
- total pore space, aeration poree0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw mulch and soil ameliorant increased total pore space, aeration pore, aggregate stability index and permeability”
t0“shallots farming”
Claim · model-written summary
Straw mulch and soil ameliorant increased aggregate stability and permeability.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- Straw mulch and soil ameliorante0
- Outcome
- aggregate stability index and permeabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw mulch and soil ameliorant increased total pore space, aeration pore, aggregate stability index and permeability”
t0“shallots farming”
Claim · model-written summary
No mulch with farmer practice plus biochar achieved the highest yield of 18.8 t ha −1.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- without mulch with farmer practise plus biochar (5 t ha −1 )e0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 18.8 t ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield (18.8 t ha −1 ) was achieved at treatment without mulch with farmer practise plus biochar (5 t ha −1 ) and plastic mulch with farmer practise plus dolomite (5 t ha −1 ) and biochar (5 t ha −1 )”
t0“shallots farming”
Claim · model-written summary
Plastic mulch with farmer practice plus dolomite and biochar also achieved the highest yield of 18.8 t ha −1.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- plastic mulch with farmer practise plus dolomite (5 t ha −1 ) and biochar (5 t ha −1 )e0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 18.8 t ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield (18.8 t ha −1 ) was achieved at treatment without mulch with farmer practise plus biochar (5 t ha −1 ) and plastic mulch with farmer practise plus dolomite (5 t ha −1 ) and biochar (5 t ha −1 )”
t0“shallots farming”
Claim · model-written summary
Yield increased by about 15% versus farmer practice.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Outcome
- yielde0
- Direction
- incrementale0
- Value
- 15.0%e0
- Comparator
- farmer practisee0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incremental yield was about 15.0% compared to farmer practise”
t0“shallots farming”
Claim · model-written summary
The treatments were financially feasible with R/C ratios of 1.5 to 2.4.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Outcome
- ratio R/Ce0
- Value
- 1.5 - 2.4e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The research treatments were financially feasible with ratio R/C of 1.5 - 2.4”
t0“shallots farming”
The same questions in other papers
mulching · yield · Allium cepa (onion)Results differ
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organic · soil: physics · Allium cepa (onion)Results agree
2 papers in the same direction as this paper
- positive
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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.