Exchange-traded funds offer a convenient way to invest in sectors or niches that interest you. If you expect the global agriculture industry to thrive as the world's population grows, the PowerShares Global Agriculture ETF
The basics
ETFs often sport lower expense ratios than their mutual fund cousins. This ETF's expense ratio -- its annual fee -- is 0.75%, which is pretty high for an ETF but is still less than the typical stock mutual fund.
This ETF has performed reasonably well, but it's also very young, with just two full (and market-beating) years on the books. As with most investments, of course, we can't expect outstanding performances in every quarter or year. Investors with conviction need to wait for their holdings to deliver.
With a low turnover rate of 19%, this fund isn't frantically and frequently rejiggering its holdings, as many funds do.
What's in it?
Several of this ETF's components made strong contributions to its performance over the past year. Seed and herbicide king Monsanto
Some smaller companies such as Agrium
Other companies didn't add as much to the ETF's returns last year, but could have an effect in the years to come. American crop titan Archer Daniels Midland
The big picture
Demand for agriculture is likely to remain as long as humans inhabit the earth. A well-chosen ETF can grant you instant diversification across any industry or group of companies -- and make investing in and profiting from it that much easier.
ETFs can help you find the way to better investing results. To find some great ETF investing ideas, take a look at The Motley Fool's special free report, " 3 ETFs Set to Soar During the Recovery ."