What is the Difference Between a Sweetpotato and a Yam?:: This site seeks to answer the question about "yams" and sweetpotatoes.
Yam Diseases in Ghana:: Outlines research into the nature and impact of diseases which may affect the yam crop.
On the Bright Side of Yam Production:: Nigeria is the leading producer of yams in sub-Saharan Africa but most farmers face problems with declining productivity, disease, cost and scarcity of clean planting material. A project in Kogi States is showing farmers how to grow their own disease free material.
Dioscorea batatas, The Hardy Yam - Plants For A Future:: Article with brief details of cultivation and uses, including reader comments.
CGIAR: Research & Impact: Areas of Research: Yam:: Account of the importance and extent of cultivation of the crop today.
Veritable Vegetable:: Provides company information and history, mission statement, and job opportunities. Based in San Francisco, California.
The Vegetable Cart:: Breeder of purebred Katahdin Hair Sheep. Also, fresh produce and hand-made soap for sale. Located in Elgin, TX, USA.
Greenhouse Vegetable Information:: Articles and forums on crop management, disease control, nutrient film technique, and media systems like soilless culture.
BBS Oils-Vegetable Ltd.:: UK exporter of crude and refined non-GMO vegetable oils and fats for the wholesale, retail, and manufacturing sectors.
Liberty Vegetable Oil:: Processing, sales, distribution of nut oils including almond, walnut, hazelnut, pecan, plus other organic and non-GMO vegetable oils. Custom processing available. California company with global distribution.