Paper · 2014 · The Bioscan

EFFECT OF HUMIC ACID ON PLANT GROWTH CHARACTERS AND GRAIN YIELD OF DRIP FERTIGATED AEROBIC RICE (ORYZA SATIVA L.)

K. Vanitha; S. Mohandass

14
claims
30
verbatim quotes
15
citations
2
research areas
—
Not open access

Abstract

An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots. The results indicated that lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation which was 21.0 percent increase over surface irrigation and 7.7 percent over drip irrigation system. Moreover, 100% RDF (150:50:50 NPK kg ha -1 ) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 ). From this study it can be concluded that subsurface drip + 100% RDF with humic acid plants showed favourable morphological growth characters with improved yield attributes leads higher grain yield. This may be due to humic acid improve plant physiological processes by enhancing the availability of major and minor nutrients as well as enhancing the vitamins, amino acids, and also auxin, cytokinin and ABA contents of the plants.

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Claims 14

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation produced lengthier roots of aerobic rice (59.1 m hill 1).

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
roote1
Direction
lengthiere1
Value
59.1 m hill 1e1

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation gave high chlorophyll content in aerobic rice (2.66 mg g -1).

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
chlorophyll contente1
Direction
highe1
Value
2.66 mg g -1e1

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation gave a higher LAD of 141 days in aerobic rice.

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
LADe1
Direction
higherinferrede1
Value
141 dayse1

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation produced more productive tillers (680 tillers m -2) in aerobic rice.

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
productive tillerse1
Direction
moree1
Value
680 tillers m -2e1

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation produced a yield of 5645 kg ha-1 in aerobic rice.

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
yielde1
Direction
higherinferrede1
Value
5645 kg ha-1e1

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation increased yield of aerobic rice by 21.0 percent over surface irrigation.

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
yielde1
Direction
increasee2
Value
21.0 percente2
Comparator
surface irrigatione2

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
e2

“which was 21.0 percent increase over surface irrigation and 7.7 percent over drip irrigation system”

✓ located verbatim in the source · abstract, characters 519–618 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip irrigation increased yield of aerobic rice by 7.7 percent over drip irrigation.

Taxon
aerobic ricee0
Treatment
subsurface drip irrigatione1
Outcome
yielde1
Direction
increasee2
Value
7.7 percente2
Comparator
drip irrigation systeme2

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e1

“lengthier root (59.1 m hill 1 ), high chlorophyll content (2.66 mg g -1 ), LAD (141 days), more productive tillers (680 tillers m -2 ) and yield (5645 kg ha-1) were produced under subsurface drip irrigation”

✓ located verbatim in the source · abstract, characters 312–518 · show in text ↑
e2

“which was 21.0 percent increase over surface irrigation and 7.7 percent over drip irrigation system”

✓ located verbatim in the source · abstract, characters 519–618 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100% RDF with humic acid gave maximum root length (58.8 m hill -1) in aerobic rice.

Taxon
aerobic ricee0
Treatment
100% RDF (150:50:50 NPK kg ha -1) applied with humic acide3
Outcome
root lengthe3
Direction
maximume3
Value
58.8 m hill -1e3

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e3

“Moreover, 100% RDF (150:50:50 NPK kg ha -1) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 )”

✓ located after whitespace/quote normalisation · abstract, characters 620–859 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100% RDF with humic acid gave higher chlorophyll content (2.61 mg g -1) in aerobic rice.

Taxon
aerobic ricee0
Treatment
100% RDF (150:50:50 NPK kg ha -1) applied with humic acide3
Outcome
chlorophyll contente3
Direction
highere3
Value
2.61 mg g -1e3

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e3

“Moreover, 100% RDF (150:50:50 NPK kg ha -1) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 )”

✓ located after whitespace/quote normalisation · abstract, characters 620–859 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100% RDF with humic acid gave a higher LAD of 151 days in aerobic rice.

Taxon
aerobic ricee0
Treatment
100% RDF (150:50:50 NPK kg ha -1) applied with humic acide3
Outcome
LADe3
Direction
higherinferrede3
Value
151 dayse3

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e3

“Moreover, 100% RDF (150:50:50 NPK kg ha -1) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 )”

✓ located after whitespace/quote normalisation · abstract, characters 620–859 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100% RDF with humic acid gave more filled grain percentage (69.1) in aerobic rice.

Taxon
aerobic ricee0
Treatment
100% RDF (150:50:50 NPK kg ha -1) applied with humic acide3
Outcome
filled grain percentagee3
Direction
moree3
Value
69.1e3

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e3

“Moreover, 100% RDF (150:50:50 NPK kg ha -1) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 )”

✓ located after whitespace/quote normalisation · abstract, characters 620–859 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100% RDF with humic acid gave a yield of 5616 kg ha -1 in aerobic rice.

Taxon
aerobic ricee0
Treatment
100% RDF (150:50:50 NPK kg ha -1) applied with humic acide3
Outcome
yielde3
Direction
higherinferrede3
Value
5616 kg ha -1e3

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e3

“Moreover, 100% RDF (150:50:50 NPK kg ha -1) applied with humic acid recorded maximum root length (58.8 m hill -1 ), higher chlorophyll content (2.61 mg g -1 ), LAD (151 days), more filled grain percentage (69.1) and yield (5616 kg ha -1 )”

✓ located after whitespace/quote normalisation · abstract, characters 620–859 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Subsurface drip with 100% RDF and humic acid leads to higher grain yield in aerobic rice.

Taxon
aerobic ricee0
Treatment
subsurface drip + 100% RDF with humic acide4
Outcome
grain yielde4
Direction
highere4

Not reportedComparator

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e4

“From this study it can be concluded that subsurface drip + 100% RDF with humic acid plants showed favourable morphological growth characters with improved yield attributes leads higher grain yield”

✓ located verbatim in the source · abstract, characters 861–1057 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Humic acid may improve physiological processes of aerobic rice by enhancing nutrient availability and auxin, cytokinin and ABA contents.

Taxon
aerobic ricee0
Treatment
humic acide5
Compound
auxin, cytokinin and ABAe5
Outcome
plant physiological processese5
Qualifier
by enhancing the availability of major and minor nutrientse5

Verbatim

e0

“An experiment was aimed to assess the effect of humic acid on plant growth attributes and yield of aerobic rice under conventional, drip and subsurface drip fertigation system allotted to main plot and fertiliser levels (75 and 100% RDF) with and without humic acid kept in sub plots”

✓ located verbatim in the source · abstract, characters 0–283 · show in text ↑
e5

“This may be due to humic acid improve plant physiological processes by enhancing the availability of major and minor nutrients as well as enhancing the vitamins, amino acids, and also auxin, cytokinin and ABA contents of the plants”

✓ located verbatim in the source · abstract, characters 1059–1290 · show in text ↑

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8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.