Paper · 2019 · Zenodo (CERN European Organization for Nuclear Research)

GROWTH AND YIELD RESPONSE OF NEWLY RELEASED CASSAVA GENOTYPES AND HYBRID MAIZE TO INTERCROPPING

Benson Ekwaro; Wanaku, Boniface; Katuromunda, Sylvester

9
claims
18
verbatim quotes
1
citations
1
research areas
✓
Open access · cc-by

Abstract

Cassava/maize intercrops have been reported to be highly productive, mainly because of their different growth patterns. However, there is limited information on the influence of maize planting density in the cassava/maize intercrop on the performance of hybrid maize and improved cassava genotypes in Uganda. Thus, this study determined whether recently released cassava genotypes which are selected on the basis of monocrop performance, would perform equally well when intercropped with hybrid maize varieties. Cassava genotypes NAROCASS 1 and NASE 14 intercropped with Longe 6H maize were evaluated using randomized complete block design and three replications. Treatments were: Sole maize (SM), sole cassava (SC), alternate rows of cassava and maize (1C:1M), and one row of cassava alternating with two rows of maize (1C:2M). Intercropping significantly increased the maize plant heights in the 1C:2M system than in sole maize. Cob length and number of rows per cob decreased as the plant population density increased. Maize grain yield under the 1C:1M system was comparable to that of sole cropping. The 1C:2M system gave significantly reduced grain yields when compared with those at 1C:1M. Cassava root yield decreased in the order (SM>1C:1M>1C:2M). Although the yields of both cassava and maize under sole cropping were higher than their intercrop counterparts, intercropping was more productive than sole cropping as evidenced by the land equivalent ratios.

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Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Maize plants were taller under 1C:2M intercropping than sole maize.

Taxon
maizeZea mayst0
Treatment
1C:2M systeme0
Outcome
maize plant heightse0
Direction
increasede0
Comparator
sole maizee0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Intercropping significantly increased the maize plant heights in the 1C:2M system than in sole maize”

✓ located verbatim in the source · abstract, characters 829–929 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize cob length fell as planting density rose.

Taxon
maizeZea mayst0
Treatment
plant population density increasede0
Outcome
Cob lengthe0
Direction
decreasede0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Cob length and number of rows per cob decreased as the plant population density increased”

✓ located verbatim in the source · abstract, characters 931–1020 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize cob row count fell as planting density rose.

Taxon
maizeZea mayst0
Treatment
plant population density increasede0
Outcome
number of rows per cobe0
Direction
decreasede0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Cob length and number of rows per cob decreased as the plant population density increased”

✓ located verbatim in the source · abstract, characters 931–1020 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Maize grain yield in 1C:1M was comparable with sole cropping.

Taxon
maizeZea mayst0
Treatment
1C:1M systeme0
Outcome
Maize grain yielde0
Direction
comparablee0
Comparator
sole croppinge0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Maize grain yield under the 1C:1M system was comparable to that of sole cropping”

✓ located verbatim in the source · abstract, characters 1022–1102 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Maize grain yield was significantly lower under 1C:2M than 1C:1M.

Taxon
maizeZea mayst0
Treatment
1C:2M systeme0
Outcome
grain yieldse0
Direction
reducede0
Comparator
1C:1Me0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“The 1C:2M system gave significantly reduced grain yields when compared with those at 1C:1M”

✓ located verbatim in the source · abstract, characters 1104–1194 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cassava root yield declined across the stated systems.

Treatment
1C:2Me0
Outcome
Cassava root yielde0
Direction
decreasede0
Qualifier
SM>1C:1M>1C:2Me0
Comparator
1C:1Me0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Cassava root yield decreased in the order (SM>1C:1M>1C:2M)”

✓ located verbatim in the source · abstract, characters 1196–1254 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sole cassava yield exceeded intercrop cassava yield.

Treatment
sole croppinge0
Outcome
yields of both cassava and maizee0
Direction
highere0
Comparator
intercrop counterpartse0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Although the yields of both cassava and maize under sole cropping were higher than their intercrop counterparts”

✓ located verbatim in the source · abstract, characters 1256–1367 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sole maize yield exceeded intercrop maize yield.

Taxon
MAIZEZea mayst0
Treatment
sole croppinge0
Outcome
yields of both cassava and maizee0
Direction
highere0
Comparator
intercrop counterpartse0

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

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“Although the yields of both cassava and maize under sole cropping were higher than their intercrop counterparts”

✓ located verbatim in the source · abstract, characters 1256–1367 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping had greater land productivity than sole cropping by land equivalent ratios.

Outcome
land equivalent ratiose0
Direction
more productivee0
Comparator
sole croppinge0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“CASSAVA GENOTYPES AND HYBRID MAIZE”

✓ located verbatim in the source · title, characters 44–78 · show in text ↑
e0

“intercropping was more productive than sole cropping as evidenced by the land equivalent ratios”

✓ located verbatim in the source · abstract, characters 1369–1464 · show in text ↑

intercropping · yield · Manihot esculenta (cassava)Results differ

78 papers: 48 positive, 30 negative or no effect

47 papers in the same direction as this paper · 28 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

74 papers more in this group

See all 78 papers →

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

658 papers: 519 positive, 139 negative or no effect

518 papers in the same direction as this paper · 132 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

654 papers more in this group

See all 658 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. positive
  2. no effect
  3. no effect

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.