An agriculture boom is now in the making, says legendary investor Jim Rogers.

The billionaire commodity guru recently shared his outlook for the industry with The Edge Financial Daily at the 2018 Investment and International Trade Forum over the weekend. It's bleak for famers, but great for investors who get in early.

That's because Jim Rogers sees two catalysts on the horizon for the agricultural industry…

The Two Reasons Jim Rogers Is Investing in Agriculture

"No one wants to be a farmer anymore, as compared to the past, when farmers were like masters of the universe for a long period of time," said Rogers.

"The agriculture sector has been a disaster for 35 years. Things are so bad. The average age of an American farmer is 58, the average age in Japan is 68. And do you know that the highest suicide rate in the UK is in the agricultural sector?"

As a result, he argues, there will be a shortage of agricultural products in the coming years.

At the same time, China, India, Russia, and other Asian countries will continue to fuel demand growth.

The confluence of these two situations – decreasing supply and increasing demand – will fuel prices higher. "There will be an imbalance in the future between demand and supply in agricultural commodities… and that will drive prices higher," said Rogers.

One way to ride the anticipated high prices is by investing in futures contracts of popular crops, like sugar.  But that's not the best option for every investor.

Here are two more ways you can invest in the agricultural sector before the boom – plus a look at one "bonus" agriculture play that could mint you huge gains right now…

How to Invest in Agriculture No. 1: Commodity-Based ETFs

Investing in commodity-based ETFs (exchange-traded funds) or ETNs (exchange-traded notes) is a great way to gain exposure to a specific commodity, like corn (NYSE Arca: CORN), sugar (NYSE Arca: CANE), or grains (NYSE Arca: GRU).

There are even ETFs specifically made for investors looking to bundle multiple commodities together. For example, the PowerShares DB Agrifod ETF (NYSE Arca: DBA) presents investors with the opportunity to invest in a basket of commodities. This ETF, which currently trades at just $18.53 per share, invests in corn, wheat, soybeans, and sugar futures contracts.

But buyer beware. Commodities are known for being particularly volatile – meaning the ETFs based off of commodities can be equally volatile.

How to Invest in Agriculture No. 2: Mutual Funds

If you're looking to spread out your risk across many different holdings, look no further than mutual funds.