Paper · 1997

Kakawate hedgerows for improved soil fertility and crop yield

C. Tura

8
claims
12
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Verification study mature technology of using leguminous species as hedgerows in agroforestry systems was conducted. The study site was in an upland farm which was planted to corn in Overland, Buenavista, Bohol [Philippines]. The soil in the area was deficient in macronutrients, moderately acidic with organic matter concentrated on the top soil equivalent to 1.5 percent decreasing downwards. The study established kakawate hedgerows in double or triple rows along the contour following a distance of 25 cm between rows and 30 cm between hills. Kakawate leaves and branches were chopped into small pieces then dried before spreading in the alleys. Herbage application for 3 years improved soil condition, increasing soil pH (from 5.6 to 6.8), percent organic matter, total nitrogen, phosphorous, potassium, and other macronutrients. Kakawate applied as organic fertilizer significantly improved crop yield. At an annual herbage application of 2,693 kg/ha for 3 years, corn intercropped with peanut had produced an average annual yield of 827 kg/ha (grain), while peanut intercropped had given an average annual yield of 620 kg/ha (unshelled). There was 91 percent yield increase for corn and 141 percent yield increase for peanut. Sweetpotato intercropped with bush sitao had produced an average annual yield of 1,903 kg of tuberous roots or a 240 percent increase and 2,903 kg of fresh pods/ha or 132 percent increase, respectively. Cost-and-return analysis showed that income remarkably increased. On the 2nd year of operation, a net income of P24,109.00 was realized. This increased to P52,009.00 on the 3rd year

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

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 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three years of kakawate herbage increased soil pH from 5.6 to 6.8.

Taxon
Kakawatee1
Treatment
Herbage application for 3 yearse0
Outcome
soil pHe0
Direction
increasinge0
Value
from 5.6 to 6.8e0

Not reportedComparator

Verbatim

e0

“Herbage application for 3 years improved soil condition, increasing soil pH (from 5.6 to 6.8)”

✓ located verbatim in the source · abstract, characters 650–743 · show in text ↑
e1

“Kakawate applied as organic fertilizer significantly improved crop yield”

✓ located verbatim in the source · abstract, characters 835–907 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three years of herbage application increased soil organic matter and macronutrients.

Taxon
Kakawatee1
Treatment
Herbage application for 3 yearse0
Outcome
percent organic matter, total nitrogen, phosphorouse0
Direction
increasinge0

Not reportedComparator

Verbatim

e0

“Herbage application for 3 years improved soil condition, increasing soil pH (from 5.6 to 6.8), percent organic matter, total nitrogen, phosphorous, potassium, and other macronutrients”

✓ located verbatim in the source · abstract, characters 650–833 · show in text ↑
e1

“Kakawate applied as organic fertilizer significantly improved crop yield”

✓ located verbatim in the source · abstract, characters 835–907 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kakawate organic fertilizer significantly improved crop yield.

Taxon
Kakawatee0
Treatment
Kakawate applied as organic fertilizere0
Outcome
crop yielde0
Direction
improvede0

Not reportedComparator

Verbatim

e0

“Kakawate applied as organic fertilizer significantly improved crop yield”

✓ located verbatim in the source · abstract, characters 835–907 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Corn grain yield increased by 91% under the intercrop and herbage system, averaging 827 kg/ha.

Treatment
intercropped with peanute0
Outcome
yielde0
Direction
increasee1
Value
827 kg/hae0
Qualifier
91 percente1

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 ↗

Verbatim

e0

“corn intercropped with peanut had produced an average annual yield of 827 kg/ha (grain)”

✓ located verbatim in the source · abstract, characters 970–1057 · show in text ↑
e1

“There was 91 percent yield increase for corn”

✓ located verbatim in the source · abstract, characters 1145–1189 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropped peanut yield increased by 141%, averaging 620 kg/ha unshelled.

Treatment
intercroppede0
Outcome
yielde0
Direction
increasee1
Value
620 kg/hae0
Qualifier
141 percente1

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“peanut intercropped had given an average annual yield of 620 kg/ha (unshelled)”

✓ located verbatim in the source · abstract, characters 1065–1143 · show in text ↑
e1

“141 percent yield increase for peanut”

✓ located verbatim in the source · abstract, characters 1194–1231 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sweetpotato tuberous root yield increased by 240% and averaged 1,903 kg.

Taxon
SweetpotatoIpomoea batatase0
Treatment
intercropped with bush sitaoe0
Outcome
yielde0
Direction
increasee0
Value
1,903 kge0
Qualifier
240 percente0

Not reportedComparator

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Sweetpotato intercropped with bush sitao had produced an average annual yield of 1,903 kg of tuberous roots or a 240 percent increase”

✓ located verbatim in the source · abstract, characters 1233–1366 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bush sitao fresh pod yield increased by 132% and averaged 2,903 kg/ha.

Taxon
bush sitaoe0
Treatment
intercroppede0
Outcome
fresh podse0
Direction
increasee0
Value
2,903 kge0
Qualifier
132 percente0

Not reportedComparator

Verbatim

e0

“Sweetpotato intercropped with bush sitao had produced an average annual yield of 1,903 kg of tuberous roots or a 240 percent increase and 2,903 kg of fresh pods/ha or 132 percent increase, respectively”

✓ located verbatim in the source · abstract, characters 1233–1434 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Net income increased from P24,109.00 in year two to P52,009.00 in year three.

Outcome
net incomee0
Direction
increasede0
Value
P52,009.00e0
Qualifier
P24,109.00e0

Not reportedTaxon

Verbatim

e0

“On the 2nd year of operation, a net income of P24,109.00 was realized. This increased to P52,009.00 on the 3rd year”

✓ located verbatim in the source · abstract, characters 1502–1617 · show in text ↑

Arachis hypogaea · yield · Zea mays (maize)Positive and negative results

60 papers: 55 positive, 5 negative or no effect

54 papers in the same direction as this paper · 5 in the opposite direction

  1. no effect
  2. negative
  3. negative

56 papers more in this group

See all 60 papers →

intercropping · yield · Ipomoea batatas (sweet potato)Results differ

24 papers: 13 positive, 11 negative or no effect

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

  1. no effect
  2. negative
  3. negative

20 papers more in this group

See all 24 papers →

intercropping · yield · Arachis hypogaea (peanut)Results differ

119 papers: 79 positive, 40 negative or no effect

78 papers in the same direction as this paper · 39 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

115 papers more in this group

See all 119 papers →

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

834 papers: 613 positive, 221 negative or no effect

612 papers in the same direction as this paper · 181 in the opposite direction · 40 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

830 papers more in this group

See all 834 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.