Paper · 2011 · Journal of agricultural and biological science

YIELD AND PRODUCTIVITY OF COMPONENT CROPS IN A MAIZE- SOYBEAN INTERCROPPING SYSTEM AS AFFECTED BY TIME OF PLANTING AND SPATIAL ARRANGEMENT

A. A. Addo-Quaye; Alfred Anthony Darkwa; G. K. Ocloo

5
claims
7
verbatim quotes
67
citations
1
research areas
—
Not open access

Abstract

Two field experiments were carried out in 2007 and 2008 to determine the appropriate sequence of planting and spatial arrangement of component crops in the maize-soybean intercropping system for optimum grain yield and production efficiency. The experimental design was a randomized complete block design with three replications. Treatments consisted of combinations of five relative times of planting either maize or soybean and two spatial arrangements of soybean (alternate or double rows). One sole crop each of maize and soybean was added for comparison. The results indicated that the relative time of planting and spatial arrangement are important factors determining the productivity of the maize - soybean intercropping system. The crops must be planted simultaneously to obtain adequate yields of both crops. However, the spatial arrangement to adopt in order to obtain high yields for the component crops differed. For maize spatial arrangement of single rows of maize alternating with single rows of soybean gave the best yields. In contrast, a spatial arrangement of single rows of maize alternating with double rows of soybean recorded the best yields with respect to soybean. LER values recorded were in general greater than unity, implying that it will be more productive to intercrop maize and soybean than grow them in monoculture.

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Claims 5

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Maize and soybean must be planted simultaneously to obtain adequate yields of both crops.

Taxon
maizeZea mayse0
Treatment
planted simultaneouslye1
Outcome
adequate yields of both cropse1

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

“Two field experiments were carried out in 2007 and 2008 to determine the appropriate sequence of planting and spatial arrangement of component crops in the maize-soybean intercropping system”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e1

“The crops must be planted simultaneously to obtain adequate yields of both crops”

✓ located verbatim in the source · abstract, characters 737–817 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Relative planting time and spatial arrangement are important factors determining the productivity of the maize-soybean intercropping system.

Taxon
maizeZea mayse0
Treatment
relative time of planting and spatial arrangemente1
Outcome
productivitye1

Not reportedDirection

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

“Two field experiments were carried out in 2007 and 2008 to determine the appropriate sequence of planting and spatial arrangement of component crops in the maize-soybean intercropping system”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e1

“The results indicated that the relative time of planting and spatial arrangement are important factors determining the productivity of the maize - soybean intercropping system”

✓ located verbatim in the source · abstract, characters 560–735 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Single rows of maize alternating with single rows of soybean gave the best maize yields.

Taxon
maizeZea mayse2
Treatment
single rows of maize alternating with single rows of soybeane2
Outcome
yieldse2
Direction
beste2

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

e2

“For maize spatial arrangement of single rows of maize alternating with single rows of soybean gave the best yields”

✓ located verbatim in the source · abstract, characters 926–1040 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Single rows of maize alternating with double rows of soybean gave the best soybean yields.

Taxon
soybeanGlycine maxe3
Treatment
single rows of maize alternating with double rows of soybeane3
Outcome
yields with respect to soybeane3
Direction
beste3

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e3

“In contrast, a spatial arrangement of single rows of maize alternating with double rows of soybean recorded the best yields with respect to soybean”

✓ located verbatim in the source · abstract, characters 1042–1189 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping maize and soybean gives LER values greater than unity, so it is more productive than monoculture.

Taxon
maizeZea mayse4
Treatment
intercrope4
Outcome
LERe4
Direction
greatere4
Comparator
monoculturee4

Not reportedValue

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

e4

“LER values recorded were in general greater than unity, implying that it will be more productive to intercrop maize and soybean than grow them in monoculture”

✓ located verbatim in the source · abstract, characters 1191–1348 · show in text ↑

Zea mays · yield · Glycine max (soybean)Positive and negative results

79 papers: 58 positive, 21 negative or no effect

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  2. negative
  3. positive

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Glycine max · yield · Zea mays (maize)Positive and negative results

180 papers: 155 positive, 25 negative or no effect

154 papers in the same direction as this paper · 18 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
  2. no effect
  3. no effect

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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. positive
  3. positive

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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.