ArabScientist.org: Publishes a set of papers on agricultural topics, especially on topics relevant to the Arab countries.
C&P Press Greenbook.net: Reference information about agricultural chemicals used in crop production.
CAB Direct: An easily searchable archive of summaries of the world's agricultural and applied life sciences literature, available at cost.
California Agriculture: A bimonthly magazine of news and peer-reviewed research. Website includes abstracts and full text pdf files of some of the content.
Foodcrops and Shortages: Publication of the Food and Agriculture Organization. Offers information on the global production, trade, stocks and consumption of food commodities. Features articles in PDF format.