YiridoeEK, Bonti-AnkomahS & MartinRC (2005) Comparison of consumer perceptions and preference toward organic versus conventionally produced foods: a review and update of the literature. Renew Agric Food Syst
OughtonE & RitsonC (2007) Food consumers and organic agriculture. In Handbook of Organic Food Quality and Safety, pp. 74–94 [CooperJ, NiggliU and LeifertC, editors]. Cambridge, UK: Woodhouse Publishing Ltd.
WillerH & KilcherL (2011) The World of Organic Agriculture. Statistics and Emerging Trends 2011. FiBL-IFOAM Report. Bonn: IFOAM and Frick: FiBL.
BakerBP, BenbrookCM, GrothE3rd, et al. (2002) Pesticide residues in conventional, integrated pest management (IPM)-grown and organic foods: insights from three US data sets. Food Addit Contam
LampkinNH (2002) Organic Farming, 2nd ed.
Ipswich: Old Pond Publishing.
HansenAL (2010) The Organic Farming Manual: A Comprehensive Guide to Starting and Running a Certified Organic Farm. North Adams, MA: Storey Books.
CooperJ, SandersonR, CakmakI, et al. (2011) Effect of organic and conventional crop rotation, fertilization, and crop protection practices on metal contents in wheat (Triticum aestivum). J Agric Food Chem
van BuerenETL, JonesSS, TammL, et al. (2011) The need to breed crop varieties suitable for organic farming, using wheat, tomato and broccoli as examples: a review. NJAS Wageningen J Life Sci
Tetard-JonesC, EdwardsM, RempelosL, et al. (2013) Effects of previous crop management, fertilization regime and water supply on potato tuber proteome and yield. Agronomy
RempelosL, CooperJ, WilcocksonS, et al. (2013) Quantitative proteomics to study the response of potato to contrasting fertilisation regimes. Mol Breed
LehesrantaSJ, KoistinenKM, MassatN, et al. (2007) Effects of agricultural production systems and their components on protein profiles of potato tubers. Proteomics
Tetard-JonesC, ShottonPN, RempelosL, et al. (2013) Quantitative proteomics to study the response of wheat to contrasting fertilisation regimes. Mol Breed
van DijkJP, CankarK, SchefferSJ, et al. (2009) Transcriptome analysis of potato tubers – effects of different agricultural practices. J Agric Food Chem
van DijkJP, LeifertC, BarrosE, et al. (2010) Gene expression profiling for food safety assessment: examples in potato and maize. Regul Toxicol Pharmacol
58, Suppl. 3, S21–S25.
van DijkJP, CankarK, HendriksenPJM, et al. (2012) The identification and interpretation of differences in the transcriptomes of organically and conventionally grown potato tubers. J Agric Food Chem
Del RioD, Rodriguez-MateosA, SpencerJPE, et al. (2013) Dietary (poly)phenolics in human health: structures, bioavailability, and evidence of protective effects against chronic diseases. Antioxid Redox Signal
WahlqvistML (2013) Antioxidant relevance to human health. Asia Pac J Clin Nutr
FardetA (2010) New hypotheses for the health-protective mechanisms of whole-grain cereals: what is beyond fibre?
Nutr Res Rev
DangourAD, DodhiaSK, HayterA, et al. (2009) Nutritional quality of organic foods: a systematic review. Am J Clin Nutr
BrandtK, LeifertC, SandersonR, et al. (2011) Agroecosystem management and nutritional quality of plant foods: the case of organic fruits and vegetables. Crit Rev Plant Sci
Smith-SpanglerC, BrandeauML, HunterGE, et al. (2012) Are organic foods safer or healthier than conventional alternatives? A systematic review. Ann Intern Med
BenbrookC, ZhaoX, DaviesN, et al. (2008) .
CurlC, FenskeRA & ElgethunK (2003) Organophosphorus pesticide exposure of urban and suburban preschool children with organic and conventional diets. Environ Health Perspect
LeifertC, BallK, VolakakisN, et al. (2008) Control of enteric pathogens in ready-to-eat vegetable crops in organic and ‘low input’ production systems: a HACCP-based approach. J Appl Microbiol
StewartG (2010) Meta-analysis in applied ecology. Biol Lett
KorichevaJ & GurevitchJ (2013) Place of meta-analysis among other methods of research synthesis. In Handbook of Meta-Analysis in Ecology and Evolution, [KorichevaJ, GurevitchJ and MengersenK, editors]. Princeton, NJ: Princeton University Press.
BrandtK, Srednicka-ToberD, BaranskiM, et al. (2013) Methods for comparing data across differently designed agronomic studies: examples of different meta-analysis methods used to compare relative composition of plant foods grown using organic or conventional production methods and a protocol for a systematic review. J Agric Food Chem
StewartG, CoteI, RothsteinH, et al. (2013) First steps in beginning a meta-analysis. In Handbook of Meta-Analysis in Ecology and Evolution, pp. 27–36 [KorichevaJ, GurevitchJ and MengersenK, editors]. Princeton, NJ: Princeton University Press.
PalupiE, JayanegaraA, PloegerA, et al. (2012) Comparison of nutritional quality between conventional and organic dairy products: a meta-analysis. J Sci Food Agric
ViechtbauerW (2010) Conducting meta-analyses in R with the metafor package. J Stat Softw
HedgesLV & OlkinI (1985) Statistical Methods for Meta-Analysis. San Diego, CA: Academic Press.
Sanchez-MecaJ & Marin-MartinezF (2010) Meta-analysis. In International Encyclopedia of Education, 3rd ed., pp. 274–282 [PetersonP, BakerE and McGawB, editors]. Amsterdam: Elsevier.
LipseyMW & WilsonDB (editors) (2001) Practical Meta-analysis. Thousand Oaks, CA: Sage Publications.
HedgesLV, GurevitchJ & CurtisPS (1999) The meta-analysis of response ratios in experimental ecology. Ecology
MengersenK, SchmidtC, JennionsM, et al. (2013) Statistical models and approaches to inference. In Handbook of Meta-Analysis in Ecology and Evolution, pp. 89–107 [KorichevaJ, GurevitchJ and MengersenK, editors]. Princeton, NJ: Princeton University Press.
RothsteinHR, SuttonAJ & BorensteinM (2006) Publication Bias in Meta-Analysis. Chichester, UK: John Wiley & Sons Ltd.
GurevitchJ & HedgesLV (1999) Statistical issues in ecological meta-analyses. Ecology
ManlyBFJ (1997) Randomization, Bootstrap and Monte Carlo Methods in Biology, 2nd ed.
New York: Chapman & Hall.
RosenbergM, RothsteinH & GurevitchJ (2013) Effect sizes: conventional choices and calculations. In Handbook of Meta-Analysis in Ecology and Evolution, pp. 61–71 [KorichevaJ, GurevitchJ and MengersenK, editors]. Princeton, NJ: Princeton University Press.
GuyattGH, OxmanAD, VistGE, et al. (2008) GRADE: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ
Grinder-PedersenL, RasmussenSE, BügelS, et al. (2003) Effect of diets based on foods from conventional versus organic production on intake and excretion of flavonoids and markers of antioxidative defense in humans. J Agric Food Chem
SøltoftM, BystedA, MadsenKH, et al. (2011) Effects of organic and conventional growth systems on the content of carotenoids in carrot roots, and on intake and plasma status of carotenoids in humans. J Sci Food Agric
HuberM, van de VijverLPL, ParmentierH, et al. (2010) Effects of organically and conventionally produced feed on biomarkers of health in a chicken model. Br J Nutr
LauridsenC, YongC, HalekohU, et al. (2008) Rats show differences in some biomarkers of health when eating diets based on ingredients produced with three different cultivation strategies. J Sci Food Agric
Srednicka-ToberD, BaranskiM, Gromadzka-OstrowskaJ, et al. (2013) Effect of crop protection and fertilization regimes used in organic and conventional production systems on feed composition and physiological parameters in rats. J Agric Food Chem
NicholsonRL & HammerschmidtR (1992) Phenolic compounds and their role in disease resistance. Annu Rev Phytopathol
BennettRN & WallsgroveRM (1994) Secondary metabolites in plant defense mechanisms. New Phytol
AlmuayrifiM (2013) .
SanderJF & HeitefussR (1998) Susceptibility to Erysiphe graminis f. sp. tritici and phenolic acid content of wheat as influenced by different levels of nitrogen fertilization. J Phytopathol
RühmannS, LeserC, BannertM, et al. (2002) Relationship between growth, secondary metabolism, and resistance of apple. Plant Biol
StewartAJ, ChapmanW, JenkinsGI, et al. (2001) The effect of nitrogen and phosphorus deficiency on flavonol accumulation in plant tissues. Plant Cell Environ
European Commission (2008) Commission Regulation (EC) No. 629/2008 of 2 July 2008 amending Regulation (EC) No. 1881/2006 setting maximum levels for certain contaminants in foodstuffs. Off J Eur Union L173, 6–9.
BešterPK, LobnikF, ErženI, et al. (2013) Prediction of cadmium concentration in selected home-produced vegetables. Ecotoxicol Environ Saf
European Commission (2005) Commission Regulation (EC) No. 396/2005 of 23 February 2005 on maximum residue levels of pesticides in or on food and feed of plant and animal origin and amending Council Directive 91/414/EEC. Off J Eur Union L70, 1–16.
European Food Safety Authority (2011) The 2009 European Union report on pesticide residues in food. EFSA
MarinovichM, GhilardiF & GalliCL (1996) Effect of pesticide mixtures on in vitro nervous cells: comparison with single pesticides. Toxicology
Pape-LindstromPA & LydyMJ (1997) Synergistic toxicity of atrazine and organophosphate insecticides contravenes the response addition mixture model. Environ Toxicol Chem
AxelradJC, HowardCV & McLeanWG (2002) Interactions between pesticides and components of pesticide formulations in an in vitro neurotoxicity test. Toxicology
LueckL, SchmidtC, CooperJ, et al. (2006) Effect of organic, low-input and conventional production systems on yield and quality of winter wheat. Aspects Appl Biol
BilsborrowP, CooperJ, Tetard-JonesC, et al. (2013) The effect of organic and conventional crop production systems on the yield and quality of wheat (Triticum aestivum) grown in a long-term field trial. Eur J Agron
CordainL, EatonSB, SebastianA, et al. (2005) Origins and evolution of the Western diet: health implications for the 21st century. Am J Clin Nutr
AstrupA (2005) The satiating power of protein – a key to obesity prevention?
Am J Clin Nutr
McKnightGM, DuncanCW, LeifertC, et al. (1999) Dietary nitrate in man: friend or foe?
Br J Nutr
LundbergJO, WeitzbergE & GladwinMT (2008) The nitrate–nitrite–nitric oxide pathway in physiology and therapeutics. Nat Rev Drug Discov
MachhaA & SchechterAN (2012) Inorganic nitrate: a major player in the cardiovascular health benefits of vegetables?