Paper · 2014 · Range Management and Agroforestry

Productivity and quality of intercropped maize (Zea mays L.) + cowpea [Vigna unguiculata (L.) Walp.] fodder as influenced by nitrogen and phosphorus levels

B T Naveen Kumar; U S Tiwana; Ajaib Singh; et al.

10
claims
11
verbatim quotes
10
citations
1
research areas
✓
Open access

Abstract

Cereals grown in association with legume crops may utilize some nitrogen fixed by legumes, resulting in enhanced forage yield and quality. To work out precise requirement of N and P in fodder maize and cowpea intercropping, a field experiment was laid out during summer seasons of 2008 and 2009 in randomized block design with eight treatments consisting of different nitrogen and phosphorus combinations. Results indicated that maximum plant height, stem girth, leaves/plant, fresh weight/plant, total green fodder (412.7 q/ha) and dry matter yield (111.5 q/ha) of maize + cowpea were recorded with 67.5 kg N + 60 kg P2O5/ha which was significantly better than all combinations of half RDF maize or RDF cowpea but was at par with 90 kg N + 30 kg P2O5/ha (RDF maize), 67.5 kg N + 30 kg P2O5/ha and 67.5 kg N + 45 kg P2O5/ha. The highest crude protein content and IVDMD of maize (8.8% and 62%), cowpea (18.7% and 66.2%) was also observed with 67.5 kg N + 60 kg P2O5/ha. Maximum crude protein yield of maize and cowpea was recorded with 67.5 kg N + 60 kg P2O5/ha. The study indicates that higher yield of quality maize and cowpea fodder in mixture can be realized with 67.5 kg N + 30 kg P2O5/ha.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The fertilizer combination maximized maize-cowpea growth traits.

Taxon
maize + cowpeae0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
plant height, stem girth, leaves/plante0
Direction
maximume0

Not reportedComparator

Verbatim

e0

“maximum plant height, stem girth, leaves/plant, fresh weight/plant, total green fodder (412.7 q/ha) and dry matter yield (111.5 q/ha) of maize + cowpea were recorded with 67.5 kg N + 60 kg P2O5/ha”

✓ located verbatim in the source · abstract, characters 429–625 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Green fodder yield reached 412.7 q/ha at the specified fertilizer rate.

Taxon
maize + cowpeae0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
total green foddere0
Value
412.7 q/hae0

Not reportedComparatorDirection

Verbatim

e0

“total green fodder (412.7 q/ha) and dry matter yield (111.5 q/ha) of maize + cowpea were recorded with 67.5 kg N + 60 kg P2O5/ha”

✓ located verbatim in the source · abstract, characters 497–625 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Dry matter yield reached 111.5 q/ha at the specified fertilizer rate.

Taxon
maize + cowpeae0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
dry matter yielde0
Value
111.5 q/hae0

Not reportedComparatorDirection

Verbatim

e0

“dry matter yield (111.5 q/ha) of maize + cowpea were recorded with 67.5 kg N + 60 kg P2O5/ha”

✓ located verbatim in the source · abstract, characters 533–625 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The fertilizer rate was significantly better than half-rate combinations but similar to three other rates.

Taxon
maize (Zea mays L.) + cowpea [Vigna unguiculata (L.) Walp.]Zea mayst0
Outcome
significantly bettere0
Direction
bettere0
Comparator
half RDF maize or RDF cowpeae0

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

“which was significantly better than all combinations of half RDF maize or RDF cowpea but was at par with 90 kg N + 30 kg P2O5/ha (RDF maize), 67.5 kg N + 30 kg P2O5/ha and 67.5 kg N + 45 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 626–824 · show in text ↑
t0

“maize (Zea mays L.) + cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 41–100 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize crude protein content peaked at 8.8%.

Taxon
maizeZea mayse0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
crude protein contente0
Direction
higheste0
Value
8.8%e0

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

“The highest crude protein content and IVDMD of maize (8.8% and 62%), cowpea (18.7% and 66.2%) was also observed with 67.5 kg N + 60 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 825–968 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize IVDMD peaked at 62%.

Taxon
maizeZea mayse0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
IVDMDe0
Direction
higheste0
Value
62%e0

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

“The highest crude protein content and IVDMD of maize (8.8% and 62%), cowpea (18.7% and 66.2%) was also observed with 67.5 kg N + 60 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 825–968 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cowpea crude protein content peaked at 18.7%.

Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
crude protein contente0
Direction
higheste0
Value
18.7%e0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest crude protein content and IVDMD of maize (8.8% and 62%), cowpea (18.7% and 66.2%) was also observed with 67.5 kg N + 60 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 825–968 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cowpea IVDMD peaked at 66.2%.

Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
IVDMDe0
Direction
higheste0
Value
66.2%e0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest crude protein content and IVDMD of maize (8.8% and 62%), cowpea (18.7% and 66.2%) was also observed with 67.5 kg N + 60 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 825–968 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The fertilizer combination maximized crude protein yield in both fodder crops.

Taxon
maize and cowpeaVigna unguiculataZea mayse0
Treatment
67.5 kg N + 60 kg P2O5/hae0
Outcome
crude protein yielde0
Direction
Maximume0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Maximum crude protein yield of maize and cowpea was recorded with 67.5 kg N + 60 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 969–1061 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend 67.5 kg N plus 30 kg P2O5/ha for high-quality mixed fodder yield.

Taxon
maize and cowpeaVigna unguiculataZea mayse0
Treatment
67.5 kg N + 30 kg P2O5/hae0
Outcome
higher yield of quality maize and cowpea foddere0

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“higher yield of quality maize and cowpea fodder in mixture can be realized with 67.5 kg N + 30 kg P2O5/ha.”

✓ located verbatim in the source · abstract, characters 1087–1193 · show in text ↑

phosphorus · quality: protein · Zea mays (maize)Results differ

26 papers: 23 positive, 3 negative or no effect

22 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. negative
  3. no effect

22 papers more in this group

See all 26 papers →

phosphorus · quality: grain · Vigna unguiculata (cowpea)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

6 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

phosphorus · quality: grain · Zea mays (maize)Positive and negative results

18 papers: 16 positive, 2 negative or no effect

15 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. no effect
  3. positive

14 papers more in this group

See all 18 papers →

phosphorus · quality: protein · Vigna unguiculata (cowpea)Results agree

11 papers: 11 positive, 0 negative or no effect

10 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 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.