Paper · 2021 · The Indian Journal of Agricultural Sciences

Productivity of maize (Zea mays) under different crop sequences and irrigation regimes

NAVNEET KAUR; KRISHAN KUMAR VASHIST; A S BRAR

6
claims
9
verbatim quotes
2
citations
1
research areas
✓
Open access · cc-by-nc-sa

Abstract

A two year field experiment was conducted at Research farm of Department of Agronomy, Punjab Agricultural University, Ludhiana during kharif 2016 and kharif 2017. The experiment was laid out in split-plot design with seven maize (Zea mays L.) based crop sequences, viz. maize-wheat, maize-potato-mentha + onion, maize + cowpea (f)- potato-mentha + onion, maize + cowpea (f)-potato-spring maize, maize + cowpea (f)-gobhi sarson-summer moong, maize-toria + gobhi sarson-summer moong and maize + cowpea (f)-toria + gobhi sarson-summer moong in main plots and four irrigation schedules of 0.75 IW/CPE, 1.0 IW/CPE, 1.25 IW/CPE and recommended schedule in sub plots replicated thrice. Intercropping of cowpea with maize increased the grain yield, crop and water productivity, energy output and net returns of kharif maize. The maximum grain yield of maize was recorded under recommended schedule which was statistically at par with 1.25 IW/CPE irrigation regime. Irrigation regime of 1.0 IW/CPE recorded the highest apparent water productivity with 3.00 and 3.07 kg/m3 during 2016 and 2017, respectively. Irrigation regimes of I1.25 and IRec were the most energy efficient and energy productive.

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

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cowpea intercropping increased maize grain yield, crop and water productivity.

Taxon
maizeZea mayse0
Treatment
Intercropping of cowpea with maizee0
Interactor
cowpeaVigna unguiculatae0other
Outcome
grain yield, crop and water productivitye0
Direction
increasede0

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

Verbatim

e0

“Intercropping of cowpea with maize increased the grain yield, crop and water productivity, energy output and net returns of kharif maize.”

✓ located verbatim in the source · abstract, characters 679–816 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cowpea intercropping increased maize energy output and net returns.

Taxon
maizeZea mayse0
Treatment
Intercropping of cowpea with maizee0
Interactor
cowpeaVigna unguiculatae0other
Outcome
energy output and net returnse0
Direction
increasede0

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

Verbatim

e0

“Intercropping of cowpea with maize increased the grain yield, crop and water productivity, energy output and net returns of kharif maize.”

✓ located verbatim in the source · abstract, characters 679–816 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Recommended irrigation had maximum maize grain yield and was statistically at par with 1.25 IW/CPE.

Taxon
maizeZea mayse0
Treatment
recommended schedulee0
Outcome
grain yielde0
Direction
maximume0
Comparator
1.25 IW/CPE irrigation regimee0

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 maximum grain yield of maize was recorded under recommended schedule which was statistically at par with 1.25 IW/CPE irrigation regime.”

✓ located verbatim in the source · abstract, characters 817–956 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 1.0 IW/CPE regime gave the highest apparent water productivity, 3.00 kg/m3 in 2016.

Taxon
maizeZea mayst0
Treatment
1.0 IW/CPEe0
Outcome
apparent water productivitye0
Direction
higheste0
Value
3.00e0
Qualifier
2016e0

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

“Irrigation regime of 1.0 IW/CPE recorded the highest apparent water productivity with 3.00 and 3.07 kg/m3 during 2016 and 2017, respectively.”

✓ located verbatim in the source · abstract, characters 957–1098 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 16–21 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 1.0 IW/CPE regime gave the highest apparent water productivity, 3.07 kg/m3 in 2017.

Taxon
maizeZea mayst0
Treatment
1.0 IW/CPEe0
Outcome
apparent water productivitye0
Direction
higheste0
Value
3.07 kg/m3e0
Qualifier
2017e0

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

“Irrigation regime of 1.0 IW/CPE recorded the highest apparent water productivity with 3.00 and 3.07 kg/m3 during 2016 and 2017, respectively.”

✓ located verbatim in the source · abstract, characters 957–1098 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 16–21 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

I1.25 and IRec were the most energy efficient and productive irrigation regimes.

Taxon
maizeZea mayst0
Treatment
I1.25 and IRece0
Outcome
most energy efficient and energy productivee0

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

“Irrigation regimes of I1.25 and IRec were the most energy efficient and energy productive.”

✓ located verbatim in the source · abstract, characters 1099–1189 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 16–21 · show in text ↑

Vigna unguiculata · yield · Zea mays (maize)Positive and negative results

127 papers: 107 positive, 20 negative or no effect

106 papers in the same direction as this paper · 16 in the opposite direction · 4 reporting no difference from an alternative

  1. negative
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  3. negative

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Vigna unguiculata · physiology: water · Zea mays (maize)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
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intercropping · physiology: water · Zea mays (maize)Positive and negative results

33 papers: 30 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. negative

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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. no effect
  2. no effect
  3. negative

830 papers more in this group

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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.