Paper · 1992 · Experimental Agriculture

Evaluation of the Leaf of a Range of Tree Legumes as a Source of Nitrogen for Crop Growth

R. C. Gutteridge

7
claims
7
verbatim quotes
21
citations
2
research areas
—
Not open access

Abstract

SUMMARY The leaf mulch of the tree legumes Acacia cunninghamii, A. fimbriata, Calliandra calothyrsus, Gliricidia sepium, Leucaena leucocephala and Sesbania sesban was evaluated as a source of nitrogen for maize growth in glasshouse pot experiments. The mulch of Sesbania sesban resulted in the largest yields of maize stover but yields were less than those that resulted from application of equivalent rates of fertilizer nitrogen. The mulches of Gliricidia and Leucaena also produced a yield response in maize but those of Calliandra and the two Acacia species were ineffective as sources of nitrogen in the short term. Sesbania mulch at the equivalent of 5 t dry matter ha -1 produced a maize yield similar to that obtained with 75 kg N ha -1 . The poor response to Calliandra and Acacia mulch may be associated with the high polyphenol and/or lignin content of the leaf of these species.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sesbania mulch gave the largest maize stover yields.

Taxon
maizeZea mayse0
Treatment
mulch of Sesbania sesbane0
Outcome
yields of maize stovere0
Direction
largeste0
Comparator
application of equivalent rates of fertilizer nitrogene0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulch of Sesbania sesban resulted in the largest yields of maize stover but yields were less than those that resulted from application of equivalent rates of fertilizer nitrogen.”

✓ located verbatim in the source · abstract, characters 249–431 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sesbania mulch produced lower maize yield than equivalent fertilizer nitrogen.

Taxon
maizeZea mayse0
Treatment
mulch of Sesbania sesbane0
Outcome
yields of maize stovere0
Direction
less thane0
Comparator
application of equivalent rates of fertilizer nitrogene0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulch of Sesbania sesban resulted in the largest yields of maize stover but yields were less than those that resulted from application of equivalent rates of fertilizer nitrogen.”

✓ located verbatim in the source · abstract, characters 249–431 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Gliricidia mulch produced a maize yield response.

Taxon
maizeZea mayse0
Treatment
mulches of Gliricidiae0
Outcome
yield response in maizee0

Not reportedComparatorDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulches of Gliricidia and Leucaena also produced a yield response in maize”

✓ located verbatim in the source · abstract, characters 432–510 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Leucaena mulch produced a maize yield response.

Taxon
maizeZea mayse0
Treatment
Leucaenae0
Outcome
yield response in maizee0

Not reportedComparatorDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulches of Gliricidia and Leucaena also produced a yield response in maize”

✓ located verbatim in the source · abstract, characters 432–510 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Calliandra mulch was ineffective as short term nitrogen source.

Taxon
maizeZea mayse0
Treatment
Calliandrae0
Outcome
sources of nitrogene0
Direction
ineffectivee0
Qualifier
in the short terme0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulches of Gliricidia and Leucaena also produced a yield response in maize but those of Calliandra and the two Acacia species were ineffective as sources of nitrogen in the short term”

✓ located verbatim in the source · abstract, characters 432–619 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The two Acacia species were ineffective as short term nitrogen sources.

Taxon
maizeZea mayse0
Treatment
the two Acacia speciese0
Outcome
sources of nitrogene0
Direction
ineffectivee0
Qualifier
in the short terme0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The mulches of Gliricidia and Leucaena also produced a yield response in maize but those of Calliandra and the two Acacia species were ineffective as sources of nitrogen in the short term”

✓ located verbatim in the source · abstract, characters 432–619 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Sesbania mulch at 5 t dry matter per hectare gave maize yield similar to 75 kg N per hectare.

Taxon
maizeZea mayse0
Treatment
Sesbania mulch at the equivalent of 5 t dry matter ha -1e0
Outcome
maize yielde0
Direction
similar toe0
Comparator
75 kg N ha -1e0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Sesbania mulch at the equivalent of 5 t dry matter ha -1 produced a maize yield similar to that obtained with 75 kg N ha -1”

✓ located verbatim in the source · abstract, characters 621–744 · show in text ↑

Sesbania sesban · yield · Zea mays (maize)Positive and negative results

9 papers: 7 positive, 2 negative or no effect

6 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

5 papers more in this group

See all 9 papers →

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

12 papers: 10 positive, 2 negative or no effect

1 paper in the same direction as this paper · 10 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

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

364 papers: 330 positive, 34 negative or no effect

329 papers in the same direction as this paper · 31 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative
    Without nitrogen in the wet year, mulched plots yielded much less.

    Effect of a Killed Sod Mulch on Nitrate Movement and Corn Yield1 · 1973 · compared with conventionally‐tilled no nitrogen treatment

    Opposite direction

360 papers more in this group

See all 364 papers →

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.