Paper · 2018 · Australian Journal of Crop Science

Improvement of soil quality using bokashi composting and NPK fertilizer to increase shallot yield on dry land

Sri Anjar Lasmini; Burhanuddin Nasir; Nur Hayati; et al.

6
claims
9
verbatim quotes
53
citations
3
research areas
✓
Open access

Abstract

The use of NPK fertilizer and bokashi composting, which is a fermented organic matter combined with microbial stock, have been reported as potential agricultural practices to enhance the farming land and crop production. The aim of this research is to understand the type of bokashi fertilizer and the correct dosage of NPK inorganic fertilizer in improving entisol soil quality and shallot yield in the dry land. The research used the split-plot design, which was divided into two factors. The first factor of the main plot was the bokashi type consisting of two levels: 3 t ha -1 of bokashi compost of Gliricidia sp. tree leaves (B1); and bokashi cow manure 3 t ha -1 (B2). The second factor as the subplot was the NPK inorganic fertilizer dose which were consisted of four levels: without fertilizers (K0), NPK 100 kg ha -1 (K1), NPK 200 kg ha -1 (K2), and NPK 300 kg ha -1 (K3). By combination of these two factors 8 combined treatments with 3 replications totally 24 units were obtained. The result of the research showed that application of 3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2) caused a decrease in evaporation of its land and soil temperature, while increase shallot bulb yield compared with other treatments. The analysis of soil and soil microbes showed an increase in soil fertility by elevated levels of C-organic from 0.66 % to 3.28 %, N-fixing bacteria from 27 x 10 5 CFU ml -1 to 47 x10 6 CFU ml -1 and phosphate solubilizing bacteria from 20 x10 3 CFU ml -1 to 90 x10 3 CFU ml -1

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cow-manure bokashi with 200 kg ha -1 NPK decreased land evaporation versus other treatments.

Treatment
3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2)e0
Outcome
evaporation of its lande0
Direction
decreasee0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of 3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2) caused a decrease in evaporation of its land and soil temperature, while increase shallot bulb yield compared with other treatments”

✓ located verbatim in the source · abstract, characters 1032–1271 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatment decreased soil temperature versus other treatments.

Treatment
3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2)e0
Outcome
soil temperaturee0
Direction
decreasee0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of 3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2) caused a decrease in evaporation of its land and soil temperature, while increase shallot bulb yield compared with other treatments”

✓ located verbatim in the source · abstract, characters 1032–1271 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatment increased shallot bulb yield versus other treatments.

Treatment
3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2)e0
Outcome
shallot bulb yielde0
Direction
increasee0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of 3 t ha -1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha -1 (K2) caused a decrease in evaporation of its land and soil temperature, while increase shallot bulb yield compared with other treatments”

✓ located verbatim in the source · abstract, characters 1032–1271 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil C-organic increased from 0.66 % to 3.28 %.

Outcome
C-organice0
Direction
elevatede0
Value
0.66 % to 3.28 %e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“soil fertility by elevated levels of C-organic from 0.66 % to 3.28 %”

✓ located verbatim in the source · abstract, characters 1334–1402 · show in text ↑
t0

“shallot”

✓ located verbatim in the source · title, characters 84–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

N-fixing bacteria increased from 27 x 10 5 CFU ml -1 to 47 x10 6 CFU ml -1.

Outcome
N-fixing bacteriae0
Value
27 x 10 5 CFU ml -1 to 47 x10 6 CFU ml -1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“N-fixing bacteria from 27 x 10 5 CFU ml -1 to 47 x10 6 CFU ml -1”

✓ located verbatim in the source · abstract, characters 1404–1468 · show in text ↑
t0

“shallot”

✓ located verbatim in the source · title, characters 84–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphate solubilizing bacteria increased from 20 x10 3 CFU ml -1 to 90 x10 3 CFU ml -1.

Outcome
phosphate solubilizing bacteriae0
Value
20 x10 3 CFU ml -1 to 90 x10 3 CFU ml -1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“phosphate solubilizing bacteria from 20 x10 3 CFU ml -1 to 90 x10 3 CFU ml -1”

✓ located verbatim in the source · abstract, characters 1473–1550 · show in text ↑
t0

“shallot”

✓ located verbatim in the source · title, characters 84–91 · show in text ↑

fertilization · yield · Allium cepa (onion)Positive and negative results

530 papers: 464 positive, 66 negative or no effect

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fertilization · soil: physics · Allium cepa (onion)Results agree

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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.