Paper · 2006

Economic impact of Bt corn in the Philippines

Jose M. Yorobe

2
claims
2
verbatim quotes
56
citations
1
research areas
—
Not open access

Abstract

A descriptive cost and returns analysis, a Cobb-Douglas Model and a two-step econometric procedure (that includes a Probit Model) were applied to a sample of corn farmers in selected regions of the Philippines in order to determine the economic impact of the Bt corn variety. With and without type of analysis were used to establish the difference between Bt corn and non-Bt corn farms in two cropping seasons. Results showed that yield and income of Bt corn farmers were significantly higher than those of the non-Bt corn farmers. In addition, expenditure on insecticide was significantly lower among Bt corn farmers. Results in all study locations showed a significant welfare effect of using Bt corn variety among corn farmers. Educational level and farm income were among the significant factors that influenced the adoption of Bt corn.

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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 2

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Yield and income of Bt corn farmers were significantly higher than those of non-Bt corn farmers.

Treatment
Bt corne0
Outcome
yield and incomee0
Direction
highere0
Comparator
non-Bt corne0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“yield and income of Bt corn farmers were significantly higher than those of the non-Bt corn farmers”

✓ located verbatim in the source · abstract, characters 431–530 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Expenditure on insecticide was significantly lower among Bt corn farmers.

Treatment
Bt corne0
Outcome
expenditure on insecticidee0
Direction
lowere0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“expenditure on insecticide was significantly lower among Bt corn farmers”

✓ located verbatim in the source · abstract, characters 545–617 · show in text ↑

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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.