Paper · 1980 · DOAJ (DOAJ: Directory of Open Access Journals)

Growth and yield of corn intercropped with giant ipil-ipil on a hillside.

José M. de la Rosa Arranz; R. M. Santiago; Marylene Bagarinao Posas

14
claims
23
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Ipil-ipil intercrop significantly enhanced the maturity of corn plants and increased ear length, ear diameter, and grain yield per plant. However, tasseling, plant height, ear height, number of ears per plant, and shelling percentage were not significantly affected. Corn plots intercropped with 10, 15, and 20 ipil-ipil plants per linear meter (T1, T2, and T3) gave computed yields of 69.9, 73.4, and 7.0 g/plant, all of which were significantly higher than the control plot (To) which yielded 48.5 g/plant. This indicated that grain yield per plant was improved by the ipil-ipil intercrop. In terms of total grain yield, however, no marked differences were observed between the intercropped corn and control plots due to the differences in plant population. The smaller and shorter ears obtained in the control plot (To) were compensated by the number of plants which was twice as many as in T1, T2, and T3. However, the yields in T2 and T3 exceeded slightly that of To. The average yield obtained was 49.52 cavans or 2.77 t/ha. Hill erosion during heavy rains was greater in To than in T1, T2, and T3.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 14

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Ipil-ipil intercropping significantly advanced corn maturity.

Treatment
Ipil-ipil intercrope0
Interactor
Ipil-ipilLeucaena leucocephalae0other
Outcome
maturitye0
Direction
enhancede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Ipil-ipil intercrop significantly enhanced the maturity of corn plants”

✓ located verbatim in the source · abstract, characters 0–70 · show in text ↑
t0

“corn intercropped with giant ipil-ipil”

✓ located verbatim in the source · title, characters 20–58 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping increased corn ear length and diameter.

Treatment
Ipil-ipil intercrope0
Interactor
Ipil-ipilLeucaena leucocephalae0other
Outcome
ear length, ear diametere0
Direction
increasede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Ipil-ipil intercrop significantly enhanced the maturity of corn plants and increased ear length, ear diameter, and grain yield per plant”

✓ located verbatim in the source · abstract, characters 0–136 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping increased corn grain yield per plant.

Treatment
Ipil-ipil intercrope0
Interactor
Ipil-ipilLeucaena leucocephalae0other
Outcome
grain yield per plante0
Direction
increasede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Ipil-ipil intercrop significantly enhanced the maturity of corn plants and increased ear length, ear diameter, and grain yield per plant”

✓ located verbatim in the source · abstract, characters 0–136 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Intercropping did not significantly affect corn tasseling, height or ear height.

Treatment
Ipil-ipil intercrope1
Interactor
Ipil-ipilLeucaena leucocephalae1other
Outcome
tasseling, plant height, ear heighte0
Direction
not significantly affectede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“tasseling, plant height, ear height, number of ears per plant, and shelling percentage were not significantly affected”

✓ located verbatim in the source · abstract, characters 147–265 · show in text ↑
e1

“Ipil-ipil intercrop significantly enhanced the maturity of corn plants”

✓ located verbatim in the source · abstract, characters 0–70 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Intercropping did not significantly affect ears per plant or shelling percentage.

Treatment
Ipil-ipil intercrope1
Interactor
Ipil-ipilLeucaena leucocephalae1other
Outcome
number of ears per plant, and shelling percentagee0
Direction
not significantly affectede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“tasseling, plant height, ear height, number of ears per plant, and shelling percentage were not significantly affected”

✓ located verbatim in the source · abstract, characters 147–265 · show in text ↑
e1

“Ipil-ipil intercrop significantly enhanced the maturity of corn plants”

✓ located verbatim in the source · abstract, characters 0–70 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Ten ipil-ipil plants per meter yielded 69.9 g of corn per plant, significantly above control.

Treatment
10e0
Interactor
ipil-ipilLeucaena leucocephalae0other
Outcome
computed yieldse0
Direction
highere0
Value
69.9e0
Qualifier
48.5 g/plante0
Comparator
control plot (To)e0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Corn plots intercropped with 10, 15, and 20 ipil-ipil plants per linear meter (T1, T2, and T3) gave computed yields of 69.9, 73.4, and 7.0 g/plant, all of which were significantly higher than the control plot (To) which yielded 48.5 g/plant”

✓ located verbatim in the source · abstract, characters 267–507 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Fifteen ipil-ipil plants per meter yielded 73.4 g of corn per plant, significantly above control.

Treatment
15e0
Interactor
ipil-ipilLeucaena leucocephalae0other
Outcome
computed yieldse0
Direction
highere0
Value
73.4, and 7.0 g/plante0
Comparator
control plot (To)e0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Corn plots intercropped with 10, 15, and 20 ipil-ipil plants per linear meter (T1, T2, and T3) gave computed yields of 69.9, 73.4, and 7.0 g/plant, all of which were significantly higher than the control plot (To) which yielded 48.5 g/plant”

✓ located verbatim in the source · abstract, characters 267–507 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Twenty ipil-ipil plants per meter yielded 7.0 g of corn per plant, which the abstract describes as significantly above control.

Treatment
20 ipil-ipil plants per linear metere0
Interactor
ipil-ipilLeucaena leucocephalae0other
Outcome
computed yieldse0
Direction
highere0
Value
7.0 g/plante0
Comparator
control plot (To)e0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Leucaena leucocephala
Leucaena leucocephala · InteractorAris riyanto · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Corn plots intercropped with 10, 15, and 20 ipil-ipil plants per linear meter (T1, T2, and T3) gave computed yields of 69.9, 73.4, and 7.0 g/plant, all of which were significantly higher than the control plot (To) which yielded 48.5 g/plant”

✓ located verbatim in the source · abstract, characters 267–507 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Total grain yield showed no marked difference between intercropped and control corn plots.

Treatment
intercropped corne1
Outcome
total grain yielde1
Direction
no marked differencese1
Comparator
control plotse1

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“no marked differences were observed between the intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 632–715 · show in text ↑
e1

“In terms of total grain yield, however, no marked differences were observed between the intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 592–715 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Control corn ears were smaller and shorter than intercropped ears.

Treatment
intercroppede1
Outcome
earse0
Direction
smaller and shortere0
Comparator
control plot (To)e0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The smaller and shorter ears obtained in the control plot (To) were compensated by the number of plants which was twice as many as in T1, T2, and T3”

✓ located verbatim in the source · abstract, characters 760–908 · show in text ↑
e1

“intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 680–715 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The control had twice the corn plant count of the intercropped plots.

Outcome
number of plantse0
Direction
twice as manye0
Comparator
T1, T2, and T3e0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the number of plants which was twice as many as in T1, T2, and T3”

✓ located verbatim in the source · abstract, characters 843–908 · show in text ↑
e1

“intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 680–715 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The authors report that T2 and T3 yields slightly exceeded control.

Treatment
T2 and T3e0
Outcome
yieldse0
Direction
exceeded slightlye0
Comparator
Toe0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the yields in T2 and T3 exceeded slightly that of To”

✓ located verbatim in the source · abstract, characters 919–971 · show in text ↑
e1

“intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 680–715 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Average corn yield was 49.52 cavans or 2.77 t/ha.

Outcome
average yielde0
Value
49.52 cavans or 2.77 t/hae0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The average yield obtained was 49.52 cavans or 2.77 t/ha”

✓ located verbatim in the source · abstract, characters 973–1029 · show in text ↑
e1

“intercropped corn and control plots”

✓ located verbatim in the source · abstract, characters 680–715 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Control plots had more hillside erosion during heavy rain than intercropped plots.

Treatment
intercropped with giant ipil-ipilt0
Interactor
giant ipil-ipilt0other
Outcome
Hill erosione0
Direction
greatere0
Qualifier
heavy rainse0
Comparator
Toe0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Hill erosion during heavy rains was greater in To than in T1, T2, and T3”

✓ located verbatim in the source · abstract, characters 1031–1103 · show in text ↑
t0

“corn intercropped with giant ipil-ipil”

✓ located verbatim in the source · title, characters 20–58 · show in text ↑

Zea mays subsp. mays · yield · Zea mays (maize)Results differ

292 papers: 196 positive, 96 negative or no effect

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8 papers: 6 positive, 2 negative or no effect

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intercropping · growth · Zea mays (maize)Results differ

184 papers: 138 positive, 46 negative or no effect

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intercropping · phenology · Zea mays (maize)Positive and negative results

8 papers: 5 positive, 3 negative or no effect

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intercropping · yield · Zea mays (maize)Positive and negative results

834 papers: 613 positive, 221 negative or no effect

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26 papers: 26 positive, 0 negative or no effect

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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.