Paper · 2003 · Science

Yield Effects of Genetically Modified Crops in Developing Countries

Matin Qaim; David Zilberman

2
claims
2
verbatim quotes
758
citations
2
research areas
—
Not open access

Abstract

Onfarm field trials carried out with Bacillus thuringiensis (Bt) cotton in different states of India show that the technology substantially reduces pest damage and increases yields. The yield gains are much higher than what has been reported for other countries where genetically modified crops were used mostly to replace and enhance chemical pest control. In many developing countries, small-scale farmers especially suffer big pest-related yield losses because of technical and economic constraints. Pest-resistant genetically modified crops can contribute to increased yields and agricultural growth in those situations, as the case of Bt cotton in India demonstrates.

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Claims 2

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bt cotton substantially reduced pest damage in on-farm field trials in India.

Treatment
Bacillus thuringiensis (Bt) cottone1
Outcome
pest damagee1
Direction
reducese1
Setting
different states of Indiae1

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Onfarm field trials carried out with Bacillus thuringiensis (Bt) cotton in different states of India show that the technology substantially reduces pest damage and increases yields”

✓ located verbatim in the source · abstract, characters 0–180 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bt cotton increased yields in on-farm field trials in India.

Treatment
Bacillus thuringiensis (Bt) cottone1
Outcome
yieldse1
Direction
increasese1
Setting
different states of Indiae1

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Onfarm field trials carried out with Bacillus thuringiensis (Bt) cotton in different states of India show that the technology substantially reduces pest damage and increases yields”

✓ located verbatim in the source · abstract, characters 0–180 · show in text ↑

Bacillus thuringiensis · pest · Gossypium hirsutum (cotton)Positive and negative results

11 papers: 10 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

Bacillus thuringiensis · yield · Gossypium hirsutum (cotton)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

transgenic · pest · Gossypium hirsutum (cotton)Positive and negative results

47 papers: 31 positive, 16 negative or no effect

30 papers in the same direction as this paper · 7 in the opposite direction · 9 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

43 papers more in this group

See all 47 papers →

transgenic · yield · Gossypium hirsutum (cotton)Positive and negative results

78 papers: 74 positive, 4 negative or no effect

73 papers in the same direction as this paper · 4 in the opposite direction

  1. no effect
  2. positive
  3. positive

74 papers more in this group

See all 78 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.