This post is part of a special report, Top Picks for 2010, the 27th annual survey in which TheStockAdvisors.com asks the nation's leading advisors for their single favorite stock for the new year. See all 80 stocks listed here.

"The 2010 global recovery brings opportunity in agriculture commodities," says fund expert Doug Fabian, who turns to the "soft ag" sector for his top investment idea for the coming year.

In his The ETF Trader, the advisor looks to a leveraged exchange-traded note -- the DB Agriculture Double Long ETN (DAG). Here's his review.

"There are many reasons to like the PowerShares DB Agriculture (NYSE: DBA), an exchange-traded fund that tracks agricultural commodity prices," says fund expert Doug Fabian.

In The ETF Trader, he explains, "We like the technical picture. In addition, we believe commodities are a great hedge against inflation.

"Overall, we like the patterns taking shape in the world's key agricultural crops. The price charts of crops like corn, soybeans, sugar and wheat all have given us one compelling message, and that message is it's time to buy.

"I remain a devoted long-term soft commodities bull; the grains and other soft agricultural commodities remain one of the most long-term compelling investment trends of our lifetime," says Eric Roseman.

In The Commodity Trend Alert, the advisor looks at the PowerShares DB Agriculture Fund (NYSE: DBA), noting "The grains and other soft agricultural commodities remain one of the most long-term compelling investment trends of our lifetime. I'm convinced that we remain in a long-term bull market for agricultural commodities.

"This historical trend began in 2006 and remains extremely powerful as population growth exceeds arable food supply combined with unpredictable weather patterns attacking supplies and causing droughts.

"One of the simplest and most genuine global long-term investment stories is the food sector," notes Yiannis Mostrous in Silk Road Investor. Here's a look at two ways to play this trend.

"Long-term, this should reward patient investors handsomely. As the world's population increases, demand will also grow, allowing companies in the food industry to handsomely profitWe continue to favor the theme and recommend you allocate some of your funds to it.

"There are myriad ways to play the burgeoning demand for vital resources used in food production. Our favorite is portfolio holding PowerShares DB Agriculture Fund (AMEX: DBA). It's an exchange traded fund that is based on the Deutsche Bank Liquid Commodity Index.

Based in London, Nick Vardy is among the leading international stock experts. The editor of The Global Bull Market Alert has created a package of stocks called the "Ultimate Defensive Global Bull Market Alert" Portfolio -- using ETFs to go short on China and the British pound while simultaneously going long on agriculture and the yen.

"UltraShort FTSE/Xinhua China 25 ProShares (ASE: FXP) has been a hero during market weakness. While the market's current focus is on the exposure of Chinese banks to U.S. subprime loans, the real issue in Chinese banks is their own bad loans to state-owned enterprises. China has a long way to fall.

"Short the CurrencyShares British Pound Sterling Trust (NYSE: FXB). With the U.K.'s fundamentals perhaps weaker than the United States, the U.K. currency should continue to weaken over the coming months.

"PowerShares DB Agriculture (NYSE: DBA) invests in some of the most liquid and widely traded agricultural commodities, corn, wheat, soy beans and sugar.

"Buy the Currency Shares Japanese Yen Trust (NYSE: FXY). The yen zigs when the rest of the market zags. A position in the Yen won't knock your socks off in terms of performance. But it will hold up well in times of turmoil and appreciate steadily as the 'carry trade' unwinds.

"A word of warning: This is a 'defensive' global portfolio that will hold up the best during periods of negative market sentiment. But understand that this is also the part of the portfolio that will underperform -- perhaps significantly -- on any 'relief rally' in the markets."

Each day, Steven Halpern's TheStockAdvisors.com offers the latest market commentary and favorite investment ideas from the nation's leading financial newsletter advisors.