http://commodities.about.com/od/profilesofcommodities/p/corn_futures.htm
This website includes everything about commodity trade. It provides contract specification such as contract size and contract month. It also gives readers tips on trading futures as well as related articles, so this information is really helpful to predict future price and to decide initial position in trading. Furthermore, the website shows major countries of producing grains harvesting and planting time. It would be better to research weather forecasts and global news based on the harvesting and planning time. Then, we can more easily figure out when and what position we have to choose in trading corn, wheat and soybeans.
http://futures.tradingcharts.com/
Like CME Group, this website provides commodity future price quotes, exclusive grains market commentary and related news. Daily commodity price chart shown on the website is useful to observe price fluctuation and understand each grain’s price pattern. There is also contract specification such as daily limit, trading hour and volume.
This website is the most interesting source I found this week. It shows agriculture weather maps and forecasts for farmers as well as weekly moisture index and palmer drought index. As weather is really important for seeding and harvesting grains, we can predict seeding and harvesting amounts and future price. Furthermore, the website provides market analysis. The analysis shows what is going on now and what will happen in the global market.
*Notice: USDA will update its forecast of the corn and soybean harvest on October 11. This update will change all corn, wheat and soybean future price. So, USDA will be the most important source for the following week.