"Investing in food is a simple story: expanding supply and demand fueled by rising global urbanization," says Yiannis Mostrous. In Personal Finance newsletter the global advisor looks at Monsanto (NYSE: MON).

"The global population is expected to surpass 9 billion by 2050. Wages are rising in emerging economies--led by India and China--and more people are moving into cities where the consistent and better paying jobs are.

"That means greater demand for protein-rich foods, especially meat and dairy consumption. The consumption of both has a strong correlation to urbanization. The result will be a permanent increase in demand for crop grains for feeding.

This post is part of a special annual report -- Top Stock Picks '09 -- in which TheStockAdvisors.com asked 75 leading newsletter advisors to select their favorite investment for the new year.

"Monsanto Company (NYSE: MON), my favorite investment idea for 2009, should prosper regardless of how the economy performs," Charles Rotblut, CFA and editor of Zacks Elite.

In the same sector, Tracey Ryniec, editor of The Zacks Value Trader looks to Corn Products International (NYSE: CPO), noting, "Despite a tough economy, this 100-year old company is positioned to reap the rewards from growth in agriculture."

Regarding Monsanto, Rotblut continues, "Monsanto helps farmers improve their crop yields, via both better seeds and herbicides. In blunt terms, MON provides solutions that most farmers will view as more of a necessity than a luxury.

"The data supports this assessment. Since fiscal 2005, revenues have more than doubled, rising from $5.3 billion to $11.4 billion. Net income has jumped nearly tenfold and free cash flow is up substantially.

"Looking forward, Monsanto thinks fiscal 2009 profits will total $4.20 to $4.40 per share -- an approximate 18% increase over fiscal 2008. The company also thinks that gross profits will grow by a compound annual growth rate of 15% to 20% over the next 3 years.

"Agriculture-related stocks have been hammered; as a result, we are now buyers of Monsanto (NYSE: MON)," says Glenn Rogers in Gordon Pape's The Internet Wealth Builder.

"Monsanto just recently released solid earnings and raised guidance for the year. They are now looking for earnings of $3.58 to $3.60 a share, up from $3.37 previously.

"The company said the change reflected higher-than-expected sales and gross profit in its seeds and traits business and its Roundup and other glyphosate-based herbicide business.

"The stock is down almost 20% from its all-time high of $145.80 reached in mid-June, but has lately been showing signs of renewed strength. Farmers may defer the purchase of a tractor but seed is likely to be the last place they will scrimp.

"There aren't many stocks that I am actively buying in the current market conditions but Monsanto is an exception. We rate the stock a buy."

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"As incomes around the world rise, so does demand for food; and the explosive growth in population is aggravating the situation even further," note Yiannis Mostrous and Roger Conrad.

The co-editors of Vital Resource Investor explain, "The big cycle in food demand has begun, and long-term-oriented investors will be rewarded handsomely." What's the best play? Among their favorites is Monsanto (NYSE: MON).

"Monsanto is the undisputed leader in the genetically modified (GM) seed industry. Its business consists of two segments: Seeds/Genomics and Agricultural Productivity.

"The Seeds/Genomics segment consists of the company's global seeds and traits business, and genetic technology platforms, including biotechnology, breeding and genomics.

"The Agricultural Productivity segment consists primarily of crop protection products, residential lawn-and-garden herbicide products, and the company's animal agricultural businesses.

"Monsanto shares have been affected by the market's shorter-term gyrations, but the underlying business is extremely healthy. In fact, the seed business is currently in a sweet spot as global food demand changes dramatically.