Paper · 2016 · African Journal of Agricultural Research

Biomass yield, nutrient content and in vitro dry matter digestibility of morphological fractions of two sweet potato varieties intercropped with coffee or maize-haricot bean

Negesse Tegene; Getu Dinku; Beyan Mohammed

14
claims
28
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

Effects of stages of growth and intercropping of two sweet potato varieties (Hawassi-83 and Tula) (alone or with coffee or maize-haricot bean) on biomass yield and in vitro dry matter digestibility (IVDMD) of morphological fractions were assessed in Southern Ethiopia. Similar coffee plantations (age, density, soil type, topography) were selected for intercropping. Vines were planted on three plots per intercropping type at 15 days interval, and cultivated three times. Morphological fractions were collected from 1.0 m2 of land on 4th, 5th and 6th months for nutrient and partial budget analyses (revenue estimated for 100 m2 of land). Ten elders evaluated varieties at 2nd, 4th and 6th months after planting. Lowest DM (77 g/kg) was obtained from fresh Tula stem-petiole (FTSP) but highest (190 g/kg) from fresh Tula leaf (FTL) (p<0.05). Fresh Tula vine (FTV) had lowest (840 g/kg DM) organic matter and FTL (p<0.05) highest (914 g/kg DM). Crude protein content of fresh Hawassi-83 stem-petiole (FHSP) was lowest (113 g/kg DM) but that of FTL highest (269 g/kg DM). Lowest vine yield (0.27 kg/m2) was from Tula intercropped with coffee but highest (0.82 kg/m2) from maize-haricot bean intercropping followed by sole Hawassi-83 (0.56 kg/M2). Overall mean vine DM yield (333.6 g/m2) of maize-haricot bean intercropping was greater (p<0.05) than that of intercropping (174.0 g/m2) with coffee. IVDMD of fresh Hawassi-83 leaf (FHL) (78.0±0.27) and FTSP (77.0±0.10) were lowest but that of FHSP (84.3±0.59) and FTL (84.3±0.04) highest. Both Hawassi-83 and Tula vine were best produced when intercropped with maize-haricot bean, although Hawassi-83 was more profitable and preferred by respondents than Tula. Key words: Intercropping, morphological fractions, nutrients, stage of maturity, sweet potato vine.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 14

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fresh Tula stem-petiole had the lowest dry matter content, 77 g/kg.

Taxon
sweet potatoIpomoea batatast0
Material
Tulae0
Organ / stage
stem-petiolee0
Outcome
DMe0
Direction
Loweste0
Value
77 g/kge0

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

“Lowest DM (77 g/kg) was obtained from fresh Tula stem-petiole (FTSP) but highest (190 g/kg) from fresh Tula leaf (FTL) (p<0.05)”

✓ located verbatim in the source · abstract, characters 714–841 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fresh Tula leaves had the highest dry matter content, 190 g/kg.

Taxon
sweet potatoIpomoea batatast0
Material
Tulae0
Organ / stage
leafe0
Outcome
DMe0
Direction
higheste0
Value
190 g/kge0

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

“Lowest DM (77 g/kg) was obtained from fresh Tula stem-petiole (FTSP) but highest (190 g/kg) from fresh Tula leaf (FTL) (p<0.05)”

✓ located verbatim in the source · abstract, characters 714–841 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fresh Tula vine had the lowest organic matter content, 840 g/kg DM.

Taxon
sweet potatoIpomoea batatast0
Material
Tulae0
Organ / stage
vinee0
Outcome
organic mattere0
Direction
loweste0
Value
840 g/kg DMe0

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

“Fresh Tula vine (FTV) had lowest (840 g/kg DM) organic matter and FTL (p<0.05) highest (914 g/kg DM)”

✓ located verbatim in the source · abstract, characters 843–943 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fresh Tula leaf had the highest organic matter content, 914 g/kg DM.

Taxon
sweet potatoIpomoea batatast0
Material
Tulae0
Organ / stage
FTLe0
Outcome
organic mattere0
Direction
higheste0
Value
914 g/kg DMe0

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

“Fresh Tula vine (FTV) had lowest (840 g/kg DM) organic matter and FTL (p<0.05) highest (914 g/kg DM)”

✓ located verbatim in the source · abstract, characters 843–943 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh Hawassi-83 stem-petiole had the lowest crude protein content, 113 g/kg DM.

Taxon
sweet potatoIpomoea batatast0
Material
Hawassi-83e0
Organ / stage
stem-petiolee0
Outcome
Crude protein contente0
Direction
loweste0
Value
113 g/kg DMe0

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

“Crude protein content of fresh Hawassi-83 stem-petiole (FHSP) was lowest (113 g/kg DM) but that of FTL highest (269 g/kg DM)”

✓ located verbatim in the source · abstract, characters 945–1069 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh Tula leaf had the highest crude protein content, 269 g/kg DM.

Taxon
sweet potatoIpomoea batatase1
Material
Tulae1
Organ / stage
FTLe0
Outcome
Crude protein contente0
Direction
higheste0
Value
269 g/kg DMe0

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

“Crude protein content of fresh Hawassi-83 stem-petiole (FHSP) was lowest (113 g/kg DM) but that of FTL highest (269 g/kg DM)”

✓ located verbatim in the source · abstract, characters 945–1069 · show in text ↑
e1

“two sweet potato varieties (Hawassi-83 and Tula)”

✓ located verbatim in the source · abstract, characters 49–97 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Tula with coffee yielded the least vine biomass, 0.27 kg/m2.

Taxon
sweet potatoIpomoea batatast0
Material
Tulae0
Treatment
intercropped with coffeee0
Outcome
vine yielde0
Direction
Loweste0
Value
0.27 kg/m2e0

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

“Lowest vine yield (0.27 kg/m2) was from Tula intercropped with coffee but highest (0.82 kg/m2) from maize-haricot bean intercropping followed by sole Hawassi-83 (0.56 kg/M2)”

✓ located verbatim in the source · abstract, characters 1071–1244 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Maize-haricot bean intercropping yielded the most vines, 0.82 kg/m2.

Taxon
sweet potatoIpomoea batatast0
Treatment
maize-haricot bean intercroppinge0
Outcome
vine yielde0
Direction
higheste0
Value
0.82 kg/m2e0

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

“Lowest vine yield (0.27 kg/m2) was from Tula intercropped with coffee but highest (0.82 kg/m2) from maize-haricot bean intercropping followed by sole Hawassi-83 (0.56 kg/M2)”

✓ located verbatim in the source · abstract, characters 1071–1244 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Sole Hawassi-83 vine yield was 0.56 kg/M2.

Taxon
sweet potatoIpomoea batatast0
Material
Hawassi-83e0
Outcome
sole Hawassi-83e0
Value
0.56 kg/M2e0

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

“followed by sole Hawassi-83 (0.56 kg/M2)”

✓ located verbatim in the source · abstract, characters 1204–1244 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Maize-haricot bean intercropping had greater mean vine dry matter yield than coffee intercropping.

Taxon
sweet potatoIpomoea batatast0
Treatment
maize-haricot bean intercroppinge0
Outcome
vine DM yielde0
Direction
greatere0
Value
333.6 g/m2e0
Qualifier
174.0 g/m2e0
Comparator
intercropping (174.0 g/m2) with coffeee0

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

“Overall mean vine DM yield (333.6 g/m2) of maize-haricot bean intercropping was greater (p<0.05) than that of intercropping (174.0 g/m2) with coffee”

✓ located verbatim in the source · abstract, characters 1246–1394 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh Hawassi-83 leaf and fresh Tula stem-petiole had the lowest digestibility.

Taxon
sweet potatoIpomoea batatast0
Outcome
IVDMDe0
Direction
loweste0

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

“IVDMD of fresh Hawassi-83 leaf (FHL) (78.0±0.27) and FTSP (77.0±0.10) were lowest”

✓ located verbatim in the source · abstract, characters 1396–1477 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh Hawassi-83 stem-petiole and fresh Tula leaf had the highest digestibility.

Taxon
sweet potatoIpomoea batatast0
Outcome
FHSP (84.3±0.59) and FTL (84.3±0.04)e0
Direction
higheste0

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

“that of FHSP (84.3±0.59) and FTL (84.3±0.04) highest”

✓ located verbatim in the source · abstract, characters 1482–1534 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Both varieties produced best under maize-haricot bean intercropping.

Taxon
sweet potatoIpomoea batatast0
Treatment
intercropped with maize-haricot beane0
Outcome
vinee0
Direction
best producede0

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

“Both Hawassi-83 and Tula vine were best produced when intercropped with maize-haricot bean”

✓ located verbatim in the source · abstract, characters 1536–1626 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Hawassi-83 was more profitable and preferred than Tula.

Taxon
sweet potatoIpomoea batatast0
Material
Hawassi-83e0
Outcome
profitable and preferred by respondentse0
Direction
moree0
Comparator
Tulae0

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

“Hawassi-83 was more profitable and preferred by respondents than Tula”

✓ located verbatim in the source · abstract, characters 1637–1706 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 104–116 · show in text ↑

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 →

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.