Additional file 7: Results for searches per database in English and Non-English languages

Number of records retrieved per database for searches in English language (a)

GENERAL SCIENTIFIC DATABASES AND PLATFORMS
Web of Science
Search terms:
"BT crop*", "BT seed*", "BT cotton", "BT maize", "BT corn", "BT soybean", "BT tomato", "BT eggplant", "BT rice", "BT potato", "insect* resistan* crop*", "insect* resistan* seed*", "insect* resistan* cotton", "insect* resistan* maize", "insect* resistan* corn", "insect* resistan* soybean", "insect* resistan* tomato", "insect* resistan* eggplant", "insect* resistan* rice", "insect* resistan* potato", "agricult* biotech*", "biotech* crop*", "biotech* food*", "biotech* seed*", "bioeng* crop*", "bioeng* food*", "bioeng* seed*", "gm* crop*", "gm* food*", "gm* seed*", "gm* free", "gm* label*", "gm* product*", gmo*, "transgenic* crop*", "transgenic* food*", "transgenic* seed*", "genetic* engineer* agricult*", "genetic* engineer* crop*", "genetic* engineer* food*", "genetic* engineer* seed*", "genetic* modif* agricult*", "genetic* modif* crop*", "genetic* modif* food*", "genetic* modif* seed*", ht crop*, ht seed*, ht alfalfa, ht canola, ht rapeseed, ht chicory, ht cotton, ht flax*, ht maize, ht corn, ht soybean, ht sugar beet, ht rice, ht potato, ht wheat, herbicide* resistan* crop*, herbicide* resistan* seed*, herbicide* resistan* alfalfa, herbicide* resistan* canola, herbicide* resistan* rapeseed, herbicide* resistan* chicory, herbicide* resistan* cotton, herbicide* resistan* flax*, herbicide* resistan* maize, herbicide* resistan* corn, herbicide* resistan* soybean, herbicide* resistan* sugar beet, herbicide* resistan* rice, herbicide* resistan* potato, herbicide* resistan* wheat, virus resistan* crop*, virus resistan* seed*, virus resistan* bean*, virus resistan* papaya, virus resistan* squash, virus resistan* sweet pepper, virus resistan* plum, virus resistan* potato, drought resistan* crop*, drought resistan* seed*, drought resistan* corn, drought resistan* maize, drought resistan* sugarcane, biofortif*, biosafe* agricult*, biosafe* crop*, biosafe* food*, biosafe* seed*, biosecur* agricult*, biosecur* crop*, biosecur* food*, biosecur* seed*, "roundup ready*", "liberty link*", Starlink*, bollgard*, "Golden rice"
= 4,110
Details of the search:
- Searches in: Topic
- Document type: article, book, report, case report, other, correction
- Period of time: 1996 to date
- Research domains: social sciences, and art & humanities
- Others: all databases (Web of Science Core collection, Biosis Citation Index, Biosis Previews, Current Contents Connect, Derwent Innovations Index, Inspec, Medline, Scielo). When using all databases no search string available. Searches were conducted per search term.
Scopus
Search string:
TITLE-ABS-KEY(("BT crop*") OR ("BT seed*") OR ("BT cotton") OR ("BT maize") OR ("BT corn") OR ("BT soybean") OR ("BT tomato") OR ("BT eggplant") OR ("BT rice") OR ("BT potato") OR ("insect* resistan* crop*") OR ("insect* resistan* seed*") OR ("insect* resistan* cotton") OR ("insect* resistan* maize") OR ("insect* resistan* corn") OR ("insect* resistan* soybean") OR ("insect* resistan* tomato") OR ("insect* resistan* eggplant") OR ("insect* resistan* rice") OR ("insect* resistan* potato") OR ("agricult* biotech*") OR ("biotech* crop*") OR ("biotech* food*") OR ("biotech* seed*") OR ("bioeng* crop*") OR ("bioeng* food*") OR ("bioeng* seed*") OR ("gm* crop*") OR ("gm* food*") OR ("gm* seed*") OR ("gm* free") OR ("gm* label*") OR ("gm* product*") OR (gmo*) OR ("transgenic* crop*") OR ("transgenic* food*") OR ("transgenic* seed*") OR ("genetic* engineer* agricult*") OR ("genetic* engineer* crop*") OR ("genetic* engineer* food*") OR ("genetic* engineer* seed*") OR ("genetic* modif* agricult*") OR ("genetic* modif* crop*") OR ("genetic* modif* food*") OR ("genetic* modif* seed*") OR (ht crop*) OR (ht seed*) OR (ht alfalfa) OR (ht canola) OR (ht rapeseed) OR (ht chicory) OR (ht cotton) OR (ht flax*) OR (ht maize) OR (ht corn) OR (ht soybean) OR (ht sugar beet) OR (ht rice) OR (ht potato) OR (ht wheat) OR (herbicide* resistan* crop*) OR (herbicide* resistan* seed*) OR (herbicide* resistan* alfalfa) OR (herbicide* resistan* canola) OR (herbicide* resistan* rapeseed) OR (herbicide* resistan* chicory) OR (herbicide* resistan* cotton) OR (herbicide* resistan* flax*) OR (herbicide* resistan* maize) OR (herbicide* resistan* corn) OR (herbicide* resistan* soybean) OR (herbicide* resistan* sugar beet) OR (herbicide* resistan* rice) OR (herbicide* resistan* potato) OR (herbicide* resistan* wheat) OR (virus resistan* crop*) OR (virus resistan* seed*) OR (virus resistan* bean*) OR (virus resistan* papaya) OR (virus resistan* squash) OR (virus resistan* sweet pepper) OR (virus resistan* plum) OR (virus resistan* potato) OR (drought resistan* crop*) OR (drought resistan* seed*) OR (drought resistan* corn) OR (drought resistan* maize) OR (drought resistan* sugarcane) OR (biofortif*) OR (biosafe* agricult*) OR (biosafe* crop*) OR (biosafe* food*) OR (biosafe* seed*) OR (biosecur* agricult*) OR (biosecur* crop*) OR (biosecur* food*) OR (biosecur* seed*) OR ("roundup ready*") OR ("liberty link*") OR (Starlink*) OR (bollgard*) OR ("Golden rice")) AND SUBJAREA(MULT OR ARTS OR BUSI OR DECI OR ECON OR PSYC OR SOCI) AND PUBYEAR > 1995
= 3,434
Details of the search:
- Searches in: Title, abstract or keywords
- Document time: All
- Period of time: 1996 to date
- Subject areas: multidisciplinary, arts, business, decision making, economics, psychology, and sociology
ON-LINE SEARCH ENGINE
Google Scholar
Intervention terms:
BT, insect resistant, insect resistance, insecticide resistance, insecticide resistant, biotech, biotechnology, biotechnologies, bioengineered, bioengineering, gm, gmo, gmos, transgenic, transgene, genetically engineered, genetic modification, genetically modified, ht, herbicide resistant, herbicide resistance, virus resistant, virus resistance, biofortification, biofortified, biosafety, biosecurity, roundup ready, liberty link, startlink,bollgard, golden rice
AND
Socio-economic terms:
Economics, economy, costs, cost, benefits, benefit, socio, social, farmer, farmers, consumer, consumers, 'food security', ‘supply chain’, regulation, regulations, coexist, coexistence (joined by OR)
= 8763
Details of the search:
- Searches in: All in Title. Each intervention term (“with all the keywords”) AND group of socio-economic terms (“with at least one of the keywords”)
- Period of time: 1996 to date
- Language: English
- Others: Without patents and citations. Each intervention term was combined with the group of socio-economic terms. Combinations possible, but search string not available. Truncation not available. This search engine shows a maximum of 1000 results per search. So all searches will be constrained to a maximum of 1000 per intervention term.
ORGANIZATIONS WITH FOCUS ON DEVELOPING COUNTRIES
British Library for Development
Search terms:
BT, insect* resistan*, biotech*, bioeng*, gm*, transgenic*, genetic* engineer*, genetic* modif*, ht, herbicide* resistan*, virus resistan*, drought resistan*, biofortif*, biosafe*, biosecur*, roundup ready*, liberty link*, Starlink*, bollgard*, Golden rice
= 850
Details of the search:
- Searches in: Title OR Subject OR Keyword
- Document type: all
- Period of time: 1996 to date
- Others: Searches were conducted per search term (e.g. Title: bt OR Subject: bt OR Keyword: bt)
ELDIS
Search string:
BT or insect* resistan* or biotech* or bioeng* or gm* or transgenic* or genetic* engineer* or genetic* modif* or ht or herbicide* resistan* or virus resistan* or drought resistan* or biofortif* or biosafe* or biosecur* or roundup ready* or liberty link* or Starlink* or bollgard* or Golden rice
= 1,551
Details of the search:
- Searches in: all fields
- Document type: all
- Topics: Agriculture and food, and Rising powers in international development
INTERNATIONAL ORGANIZATIONS
AGRIS
Search terms:
BT, "insect* resistan*", biotech*, bioeng*, gm*, transgenic*, "genetic* engineer*", "genetic* modif*", ht, "herbicide* resistan*", "virus resistan*", "drought resistan*", biofortif*, biosafe*, biosecur*, "roundup ready*", "liberty link*", Starlink*, bollgard*, "Golden rice"
AND
econ* cost* benefit* socio* social* regulat* farm* consumer* "food security" "supply chain" coexist* (joined by OR)
= 3,720
Details of the search:
- Searches in: all fields
- Language: English
- Document type: all
- Period of time: 1996-to date
- Others: Searches were conducted per intervention term combined with socio-economic terms. The database only allows importing the top 250 references. Therefore the number of references reported above corresponds to a maximum of 250 per search.
IFPRI (Knowledge Repository)
Search terms:
BT, insect* resistan*, biotech*, bioeng*, gm*, transgenic*, genetic* engineer*, genetic* modif*, ht, herbicide* resistan*, virus resistan*, drought resistan*, biofortif*, biosafe*, biosecur*, roundup ready*, liberty link*, Starlink*, bollgard*, Golden rice
= 2,125
Details of the search:
- Searches in: all fields (exact phrase)
- Period of time: 1996 to date
- Document type: all
- Language: English
- Others: all collections (bEcon, CGIAR Research Program Publications, IFPRI authors in external sources, IFPRI Datasets, IFPRI Publications Repository, ISNAR Publications, ReSAKSS-Asia Library). Searches were conducted per search term.
JOLIS
Search terms:
BT AND crop$, BT AND seed$, BT AND cotton$, BT AND maize$, BT AND corn, BT AND soybean$, BT AND tomato$, BT AND eggplant$, BT AND rice$, BT AND potato$, insect$ AND resistan$ AND crop$, insect$ AND resistan$ AND seed$, insect AND resistan$ AND cotton$, insect$ AND resistan$ AND maize, "insect$ AND resistan$ AND corn", "insect$ AND resistan$ AND soybean", "insect$ AND resistan$ AND tomato", "insect$ AND resistan$ AND eggplant", "insect$ AND resistan$ AND rice", "insect$ AND resistan$ AND potato", "agricult$ AND biotech$", "biotech$ AND crop$", "biotech$ AND food$", "biotech$ AND seed$", "bioeng$ AND crop$", "bioeng$ AND food$", "bioeng$ AND seed$", "gm$ AND crop$", "gm$ AND food$", "gm$ AND seed$", "gm$ AND free", "gm$ AND label$", "gm$ AND product$", gmo$, "transgenic$ AND crop$", "transgenic$ AND food$", "transgenic$ AND seed$", "genetic$ AND engineer$ AND agricult$", "genetic$ AND engineer$ AND crop$", "genetic$ AND engineer$ AND food$", "genetic$ AND engineer$ AND seed$", "genetic$ AND modif$ AND agricult$", "genetic$ AND modif$ AND crop$", "genetic$ AND modif$ AND food$", "genetic$ AND modif$ AND seed$", ht AND crop$, ht AND seed$, ht AND alfalfa, ht AND canola, ht AND rapeseed, ht AND chicory, ht AND cotton, ht AND flax$, ht AND maize, ht AND corn, ht AND soybean, ht AND sugar beet, ht AND rice, ht AND potato, ht AND wheat, herbicide$ AND resistan$ AND crop$, herbicide$ AND resistan$ AND seed$, herbicide$ AND resistan$ AND alfalfa, herbicide$ AND resistan$ AND canola, herbicide$ AND resistan$ AND rapeseed, herbicide$ AND resistan$ AND chicory, herbicide$ AND resistan$ AND cotton, herbicide$ AND resistan$ AND flax$, herbicide$ AND resistan$ AND maize, herbicide$ AND resistan$ AND corn, herbicide$ AND resistan$ AND soybean, herbicide$ AND resistan$ AND sugar beet, herbicide$ AND resistan$ AND rice, herbicide$ AND resistan$ AND potato, herbicide$ AND resistan$ AND wheat, virus AND resistan$ AND crop$, virus AND resistan$ AND seed$, virus AND resistan$ AND bean$, virus AND resistan$ AND papaya, virus AND resistan$ AND squash, virus AND resistan$ AND sweet pepper, virus AND resistan$ AND plum, virus AND resistan$ AND potato, drought resistan$ AND crop$, drought resistan$ AND seed$, drought resistan$ AND corn, drought resistan$ AND maize, drought resistan$ AND sugarcane, biofortif$, biosafe$ AND agricult$, biosafe$ AND crop$, biosafe$ AND food$, biosafe$ AND seed$, biosecur$ AND agricult$, biosecur$ AND crop$, biosecur$ AND food$, biosecur$ AND seed$, roundup ready$, liberty link$, Starlink$, bollgard$, Golden rice
= 440
Details of the search:
- Searches in: keywords anywhere (title, subject, author, series/source, periodical title, publisher, ISBN, ISSN)
- Period of time: 1996 to date
- Document type: all
- Language: English
- Others: all libraries. Limited search to online materials only. Searches were conducted per search term.
OECD iLibrary
Search terms:
BT, insect resistant, insects resistant, insect resistance, insects resistance, biotech, biotechnology, bioengineering, bioengineered food, bioengineered seed, gm, gmo, transgenic, genetic engineering, genetically modified, genetic modification, ht, herbicide resistant, herbicide resistance, virus resistant, virus resistance, drought resistant, drought resistance, biofortify, biofortification, biosafe, biosafety, biosecurity, biosecure, roundup ready, liberty link, Starlink, bollgard, Golden rice
= 339
Details of the search:
- Search in: Title and abstract
- Period of time: Pre-1999 to date
- Document type: Books and paper, excluding multilingual summaries
- Language: English
- Others: Truncation not allowed. Searches were conducted per search term.
OTHER ORGANIZATIONS / INSTITUTIONAL REPOSITORIES
AGRICOLA
Search terms:
BT, "insect? resistan?", biotech?, bioeng?, gm?, transgenic?, "genetic? engineer?", "genetic? modif?", ht, "herbicide? resistan?", "virus resistan?", "drought resistan?", biofortif?, biosafe?, biosecur?, "roundup ready?", "liberty link?", Starlink?, bollgard?
= 261
Details of the search:
- Searches in: title
- Document type: all
- Subject filters: Agricultural economics (E100), Economics and marketing research (X700), and Social sciences, humanities and education (X800)
- Others: Articles and books databases. Searches were conducted per search term and database, and then added up.
IDEAS/ REPEC
Search string 1
“insect resist” | “insect resistant” | “insect resistance” | biotech| biotechnology | biotechnologies | biotechnological | biotechnologically |biotechnologist | bioengineer | bioengineers | bioengineering | bioengineered |bioengineerings |bioengineeringly | GMO | GMOs | transgene | transgenes | transgenesis | transgenic | transgenics |transgenical | transgenically | “genetic engineer” | “genetical engineer” | “genetically engineer “| “gene modify” | “genetic modify “| “genetical modify” | “genetically modify” | “herbicide resist” | “herbicide resistant” | “herbicide resistance” | “herbicides resistant” | “herbicides resistance”
Search string 2
“virus resist” | “virus resistant” | “virus resistance” | “drought resist” | “drought resistant” | “drought resistance” | biofortify | biofortifies | biofortifying | biofortified | biofortification | biosafe | biosafety | biosecurity | biosecurities | biosecuritying | biosecuritied | “roundup ready” | “liberty link” | libertylink | starlink | bollgard | “golden rice”
= 4,932
Details of the search:
- Searches in: Whole record (Title, Abstract, Keyword and Author)
- Period of time: 1996 to date
- Document type: articles, papers, chapters, and books
- Others: Match (Boolean). Search for whole word. Use synonyms. Words forms: all. Truncation not available. The database does not allow searches using two-letter words (for example: bt, ht, gm). The database does not allow long search strings (our search string was divided in two parts for conducting the searches).
Bielefeld Academic Search Engine (BASE)
Search terms
BT crop*, BT seed*, BT cotton, BT maize, BT corn, BT soybean, BT tomato, BT eggplant, BT rice, BT potato, insect* resistan* crop*, insect* resistan* seed*, insect* resistan* cotton, insect* resistan* maize, insect* resistan* corn, insect* resistan* soybean, insect* resistan* tomato, insect* resistan* eggplant, insect* resistan* rice, insect* resistan* potato, agricult* biotech*, biotech* crop*, biotech* food*, biotech* seed*, bioeng* crop*, bioeng* food*, bioeng* seed*, gm* crop*, gm* food*, gm* seed*, gm* free, gm* label*, gm* product*, gmo*, transgenic* crop*, transgenic* food*, transgenic* seed*, genetic* engineer* agricult*, genetic* engineer* crop*, genetic* engineer* food*, genetic* engineer* seed*, genetic* modif* agricult*, genetic* modif* crop*, genetic* modif* food*, genetic* modif* seed*, ht crop*, ht seed*, ht alfalfa, ht canola, ht rapeseed, ht chicory, ht cotton, ht flax*, ht maize, ht corn, ht soybean, ht sugar beet, ht rice, ht potato, ht wheat, herbicide* resistan* crop*, herbicide* resistan* seed*, herbicide* resistan* alfalfa, herbicide* resistan* canola, herbicide* resistan* rapeseed, herbicide* resistan* chicory, herbicide* resistan* cotton, herbicide* resistan* flax*, herbicide* resistan* maize, herbicide* resistan* corn, herbicide* resistan* soybean, herbicide* resistan* sugar beet, herbicide* resistan* rice, herbicide* resistan* potato, herbicide* resistan* wheat, virus resistan* crop*, virus resistan* seed*, virus resistan* bean*, virus resistan* papaya, virus resistan* squash, virus resistan* sweet pepper, virus resistan* plum, virus resistan* potato, drought resistan* crop*, drought resistan* seed*, drought resistan* corn, drought resistan* maize, drought resistan* sugarcane, biofortif*, biosafe* agricult*, biosafe* crop*, biosafe* food*, biosafe* seed*, biosecur* agricult*, biosecur* crop*, biosecur* food*, biosecur* seed*, roundup ready*, liberty link*, Starlink*, bollgard*, Golden rice
= 8,050
Details of the search:
- Search in: Title
- Topic (Dewy Decimal Classification): economics, social science, and political science (ddc:3*)
- Period of time: 1996 to date
- Document type: books, article, journals, reports, papers, lectures, theses
- Language: English
- Others: verbatim search. Content sources: worldwide. Searches were conducted by search term.
GREY LITERATURE
Open Grey
Search terms
BT crop*, BT seed*, BT cotton, BT maize, BT corn, BT soybean, BT tomato, BT eggplant, BT rice, BT potato, insect* resistan* crop*, insect* resistan* seed*, insect* resistan* cotton, insect* resistan* maize, insect* resistan* corn, insect* resistan* soybean, insect* resistan* tomato, insect* resistan* eggplant, insect* resistan* rice, insect* resistan* potato, agricult* biotech*, biotech* crop*, biotech* food*, biotech* seed*, bioeng* crop*, bioeng* food*, bioeng* seed*, gm* crop*, gm* food*, gm* seed*, gm* free, gm* label*, gm* product*, gmo*, transgenic* crop*, transgenic* food*, transgenic* seed*, genetic* engineer* agricult*, genetic* engineer* crop*, genetic* engineer* food*, genetic* engineer* seed*, genetic* modif* agricult*, genetic* modif* crop*, genetic* modif* food*, genetic* modif* seed*, ht crop*, ht seed*, ht alfalfa, ht canola, ht rapeseed, ht chicory, ht cotton, ht flax*, ht maize, ht corn, ht soybean, ht sugar beet, ht rice, ht potato, ht wheat, herbicide* resistan* crop*, herbicide* resistan* seed*, herbicide* resistan* alfalfa, herbicide* resistan* canola, herbicide* resistan* rapeseed, herbicide* resistan* chicory, herbicide* resistan* cotton, herbicide* resistan* flax*, herbicide* resistan* maize, herbicide* resistan* corn, herbicide* resistan* soybean, herbicide* resistan* sugar beet, herbicide* resistan* rice, herbicide* resistan* potato, herbicide* resistan* wheat, virus resistan* crop*, virus resistan* seed*, virus resistan* bean*, virus resistan* papaya, virus resistan* squash, virus resistan* sweet pepper, virus resistan* plum, virus resistan* potato, drought resistan* crop*, drought resistan* seed*, drought resistan* corn, drought resistan* maize, drought resistan* sugarcane, biofortif*, biosafe* agricult*, biosafe* crop*, biosafe* food*, biosafe* seed*, biosecur* agricult*, biosecur* crop*, biosecur* food*, biosecur* seed*, roundup ready*, liberty link*, Starlink*, bollgard*, Golden rice
= 206
Details of the search:
- Search in: all
- Discipline restrictions: Agricultural economics, agricultural markets (02B), Humanities, psychology and social sciences, general (050), Management, administration, business studies (05A), Political science, public administration (05J), Sociology, social studies, welfare studies, social services (05R)
- Language: English
- Others: searches were conducted by search term.

(a) Searches were conducted during June 17-20, 2014. Searches in some databases were conducted with the intervention terms only (e.g., bt) without descriptor (e.g., bt crop*) or type of crop (e.g., bt cotton) due to the already low number of results. Searches with the intervention term only are more comprehensive than searches including the intervention term and descriptor and intervention term and type of crop. Therefore, this does not affect the comprehensiveness of the searches.