Paper · 1998 · Journal of Agronomy and Crop Science

Effect of Alternative Cropping Systems on Yield and Advantage in Direct Seeded Upland Rice Areas in Indian Sub‐tropics

R. K. Sarkar; A. Chakraborty; B. Bala

10
claims
14
verbatim quotes
4
citations
1
research areas
—
Not open access

Abstract

Abstract An experiment was conducted during rainy season (April‐August) of 1994 and 1995 to assess the performance of rice, maize, sesame, greengram and blackgram grown in sole and intercropping system on Gangetic alluvial upland (Entisol) in West Bengal. India. All intercropping systems except sesame + rice had higher total productivity in terms of rice equivalent yield and net returns than all the sole crops. However, maximum advantage was obtained from paired row planted maize blackgram system followed by maize + sesame, maize + blackgram and paired row planted rice + blackgram. Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems, which proved to be the most efficient system. The same treatment also indicated a modest competitive ratio (4.65:0.21) and gave a good value for the product of crowding coefficient (8.28).

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Most intercrops exceeded sole crops in rice equivalent yield.

Treatment
intercropping systems except sesame + ricee0
Outcome
rice equivalent yielde0
Direction
highere0
Comparator
sole cropse0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“All intercropping systems except sesame + rice had higher total productivity in terms of rice equivalent yield and net returns than all the sole crops”

✓ located verbatim in the source · abstract, characters 263–413 · show in text ↑
t0

“rice”

✓ located after whitespace/quote normalisation · title, characters 86–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Most intercrops exceeded sole crops in net returns.

Treatment
intercropping systems except sesame + ricee0
Outcome
net returnse0
Direction
highere0
Comparator
sole cropse0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“All intercropping systems except sesame + rice had higher total productivity in terms of rice equivalent yield and net returns than all the sole crops”

✓ located verbatim in the source · abstract, characters 263–413 · show in text ↑
t0

“rice”

✓ located after whitespace/quote normalisation · title, characters 86–90 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram had the maximum cropping advantage.

Taxon
maizeZea mayse0
Treatment
paired row planted maize blackgram systeme0
Outcome
maximum advantagee0

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

“maximum advantage was obtained from paired row planted maize blackgram system followed by maize + sesame, maize + blackgram and paired row planted rice + blackgram”

✓ located verbatim in the source · abstract, characters 424–587 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram increased land use efficiency relative to other systems.

Taxon
maizeZea mayse0
Treatment
Paired row planted maize + blackgrame0
Outcome
land use efficiencye0
Direction
increasede0
Value
42%e0
Comparator
other cropping systemse0

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

“Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems”

✓ located verbatim in the source · abstract, characters 589–843 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram increased rice equivalent yield relative to other systems.

Taxon
maizeZea mayse0
Treatment
Paired row planted maize + blackgrame0
Outcome
rice equivalent yielde0
Direction
increasede0
Value
2955 kg ha −1e0
Comparator
other cropping systemse0

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

“Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems”

✓ located verbatim in the source · abstract, characters 589–843 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram increased monetary return relative to other systems.

Taxon
maizeZea mayse0
Treatment
Paired row planted maize + blackgrame0
Outcome
monetary returne0
Direction
increasede0
Value
Rs. 7294 ha −1e0
Comparator
other cropping systemse0

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

“Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems”

✓ located verbatim in the source · abstract, characters 589–843 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram increased income equivalent ratio relative to other systems.

Taxon
maizeZea mayse0
Treatment
Paired row planted maize + blackgrame0
Outcome
income equivalent ratioe0
Direction
increasede0
Value
1.22e0
Comparator
other cropping systemse0

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

“Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems”

✓ located verbatim in the source · abstract, characters 589–843 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Paired-row maize and blackgram increased monetary advantage relative to other systems.

Taxon
maizeZea mayse0
Treatment
Paired row planted maize + blackgrame0
Outcome
monetary advantagee0
Direction
increasede0
Value
Rs. 3701 ha −1e0
Comparator
other cropping systemse0

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

“Paired row planted maize + blackgram increased land use efficiency (42%), rice equivalent yield (2955 kg ha −1 ), monetary return (Rs. 7294 ha −1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha −1 ) compared with other cropping systems”

✓ located verbatim in the source · abstract, characters 589–843 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The paired-row maize and blackgram treatment had a competitive ratio of 4.65:0.21.

Taxon
maizeZea mayst0
Outcome
competitive ratioe0
Value
4.65:0.21e0

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 same treatment also indicated a modest competitive ratio (4.65:0.21) and gave a good value for the product of crowding coefficient (8.28)”

✓ located verbatim in the source · abstract, characters 891–1032 · show in text ↑
t0

“paired row planted maize blackgram system”

✓ located verbatim in the source · abstract, characters 460–501 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The paired-row maize and blackgram treatment had a crowding-coefficient product of 8.28.

Taxon
maizeZea mayst0
Outcome
product of crowding coefficiente0
Value
8.28e0

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 same treatment also indicated a modest competitive ratio (4.65:0.21) and gave a good value for the product of crowding coefficient (8.28)”

✓ located verbatim in the source · abstract, characters 891–1032 · show in text ↑
t0

“paired row planted maize blackgram system”

✓ located verbatim in the source · abstract, characters 460–501 · show in text ↑

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

32 papers: 29 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. negative

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Sesamum indicum · yield · Oryza sativa (rice)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 · yield · Oryza sativa (rice)Results differ

95 papers: 77 positive, 18 negative or no effect

76 papers in the same direction as this paper · 15 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

91 papers more in this group

See all 95 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.