Paper · 1981 · Water Resources Research

Economics of rainfed cropping systems: Northeast Thailand

Sam H. Johnson; Terd Charoenwatana

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

Abstract

Using a computer model to simulate effective rainfall, it is shown that a flexible rainfed cropping system based on a legume crop planted before rice has a greater expected return than present subsistent rainfed cropping systems. Combining a legume crop intercropped with cassava or kenaf further increases the expected returns yet maintains the stability of the new system. Further research is required to bring the farmer's yields up to match experiment station results and to facilitate effective transfer policies.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 5

Intervention effectobservedoriginal resultpositivesimulated

Claim · model-written summary

A legume crop planted before rice has greater expected return than present subsistent rainfed systems.

Taxon
legume crope0
Treatment
legume crop planted before ricee0
Outcome
expected returne0
Direction
greatere0
Comparator
present subsistent rainfed cropping systemse0

Verbatim

e0

“a flexible rainfed cropping system based on a legume crop planted before rice has a greater expected return than present subsistent rainfed cropping systems”

✓ located verbatim in the source · abstract, characters 72–228 · show in text ↑
Intervention effectobservedoriginal resultpositivesimulated

Claim · model-written summary

Legume intercropping with cassava further increases expected returns.

Treatment
legume crop intercropped with cassavae0
Outcome
expected returnse0
Direction
increasese0
Comparator
new systeme0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Combining a legume crop intercropped with cassava or kenaf further increases the expected returns yet maintains the stability of the new system.”

✓ located verbatim in the source · abstract, characters 230–374 · show in text ↑
Intervention effectobservedoriginal resultpositivesimulated

Claim · model-written summary

Legume intercropping with kenaf further increases expected returns.

Treatment
legume crop intercropped with cassava or kenafe0
Outcome
expected returnse0
Direction
increasese0
Comparator
new systeme0

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

Hibiscus cannabinus
Hibiscus cannabinus · TaxonRleo4Guido · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Combining a legume crop intercropped with cassava or kenaf further increases the expected returns yet maintains the stability of the new system.”

✓ located verbatim in the source · abstract, characters 230–374 · show in text ↑
Observationobservedoriginal resultpositivesimulated

Claim · model-written summary

The legume intercrop maintained stability of the new system.

Taxon
legume crope0
Outcome
stability of the new systeme0
Direction
maintainse0

Verbatim

e0

“Combining a legume crop intercropped with cassava or kenaf further increases the expected returns yet maintains the stability of the new system.”

✓ located verbatim in the source · abstract, characters 230–374 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors call for research to raise farmers’ yields toward experiment station results and support transfer policies.

Outcome
bring the farmer's yields up to match experiment station resultse0

Not reportedTaxon

Verbatim

e0

“Further research is required to bring the farmer's yields up to match experiment station results and to facilitate effective transfer policies.”

✓ located verbatim in the source · abstract, characters 375–518 · show in text ↑

intercropping · yield · Manihot esculenta (cassava)Results differ

78 papers: 48 positive, 30 negative or no effect

47 papers in the same direction as this paper · 28 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

74 papers more in this group

See all 78 papers →

intercropping · yield · Hibiscus cannabinus (kenaf)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

1 paper more in this group

See all 5 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.