Paper · 2013 · Journal of Agricultural and Crop Research

Growth and yield parameters of maize and egusi melon in intercrop as influenced by the cropping system and different rates of NPK fertilizer

Okon Ekwere; CO Muoneke; M. J. Eka; et al.

6
claims
8
verbatim quotes
2
citations
1
research areas
—
Not open access

Abstract

The effect of different rates of NPK 20:10:10 fertilizer on the growth and yield of egusi melon (Colocynthis citrullus L. Schrad)/maize (Zea mays L.) intercropping system were examined in 2011 and 2012 cropping seasons. Maize and egusi melon were planted sole, and also in intercrop: the maize and egusi melon constituted the main plot treatment while the sub plot was different fertilizer rates (0, 200, 400 and 600 kg/ha). Intercropping reduced the grain yield of maize and the seed yields of egusi melon. Application of 200 kg/ha NPK 20:10:10 fertilizer significantly (P = 0.05) promoted the yield of maize and egusi-melon. The competitive abilities of the component crops were enhanced at increased fertilizer application rate. The total LER in all intercropping situations were greater than one, indicating that the two crops in mixture were able to utilize the growth factors maximally for their optimum yield and productivity.

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Claims 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping reduced maize grain yield.

Taxon
maizeZea mayse0
Treatment
Intercroppinge0
Outcome
grain yielde0
Direction
reducede0

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

“Intercropping reduced the grain yield of maize”

✓ located verbatim in the source · abstract, characters 425–471 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping reduced egusi melon seed yield.

Treatment
Intercroppinge0
Outcome
seed yieldse0
Direction
reducede0

Not reportedComparator

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

Citrullus mucosospermus
Citrullus mucosospermus · TaxonMicha Baum · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“Intercropping reduced the grain yield of maize and the seed yields of egusi melon”

✓ located verbatim in the source · abstract, characters 425–506 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Applying 200 kg/ha NPK 20:10:10 significantly promoted maize yield.

Taxon
maizeZea mayse0
Treatment
200 kg/ha NPK 20:10:10 fertilizere0
Outcome
yielde0
Direction
promotede0

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

“Application of 200 kg/ha NPK 20:10:10 fertilizer significantly (P = 0.05) promoted the yield of maize”

✓ located verbatim in the source · abstract, characters 508–609 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Applying 200 kg/ha NPK 20:10:10 significantly promoted egusi melon yield.

Treatment
200 kg/ha NPK 20:10:10 fertilizere0
Outcome
yielde0
Direction
promotede0

Not reportedComparator

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

Citrullus mucosospermus
Citrullus mucosospermus · TaxonMicha Baum · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“Application of 200 kg/ha NPK 20:10:10 fertilizer significantly (P = 0.05) promoted the yield of maize and egusi-melon”

✓ located verbatim in the source · abstract, characters 508–625 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Competitive ability of component crops increased with fertilizer application rate.

Taxon
maize and egusi melonZea maysCitrullus mucosospermust0
Treatment
fertilizer application ratee0
Outcome
competitive abilitiese0
Direction
enhancede0

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 ↗
Citrullus mucosospermus
Citrullus mucosospermus · TaxonMicha Baum · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“The competitive abilities of the component crops were enhanced at increased fertilizer application rate”

✓ located verbatim in the source · abstract, characters 627–730 · show in text ↑
t0

“maize and egusi melon”

✓ located verbatim in the source · title, characters 31–52 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Total land equivalent ratio exceeded one in all intercropping situations.

Taxon
maize and egusi melonZea maysCitrullus mucosospermust0
Outcome
total LERe0
Direction
greater thane0
Value
onee0

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 ↗
Citrullus mucosospermus
Citrullus mucosospermus · TaxonMicha Baum · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“The total LER in all intercropping situations were greater than one”

✓ located verbatim in the source · abstract, characters 732–799 · show in text ↑
t0

“maize and egusi melon”

✓ located verbatim in the source · title, characters 31–52 · show in text ↑

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

834 papers: 613 positive, 221 negative or no effect

220 papers in the same direction as this paper · 613 in the opposite direction

  1. negative
  2. positive
  3. positive

830 papers more in this group

See all 834 papers →

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

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

3,904 papers more in this group

See all 3,908 papers →

fertilization · yield · Citrullus mucosospermus (egusi melon)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

intercropping · yield · Citrullus mucosospermus (egusi melon)Results agree

6 papers: 0 positive, 6 negative or no effect

5 papers in the same direction as this paper

  1. negative
  2. negative
  3. negative

2 papers more in this group

See all 6 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.