Will the coronavirus outbreak unravel President Trumps new trade deal with China?

The export boom from that trade deal will take longer because of the Chinese virus, warned White House economic advisor Larry Kudlow last week. A couple of days later, he said that Chinese leader Xi Jinping has promised President Trump that China would make good on its purchase promises.

I have my doubts and thats because Ive read the fine print of the Phase One trade deal.

I grow alfalfa seed in the southeastern corner of Washington state. My business, which is closely tied to hay exports, has suffered mightily from trade disputes and poor prices.

So Im one of those farmers who is supposed to be delighted with Chinas pledge to buy $200 billion in US goods and services over the next two years. Although Im hopeful that it will give farmers a boost, Im more than a little worried that it wont and as much as Im concerned for the victims of the coronavirus in China and elsewhere, we have to recognize that the outbreak could create more challenges to the fulfillment of the trade agreement.

Farmers need more exports. The trade wars have battered us, knocking down commodity prices and forcing bankruptcies. Weve lost reliable customers to countries such as Argentina, Australia and Brazil. They have gobbled up the market share that used to be ours.

China bought $24 billion in US agricultural products in 2017, before the trade war gutted our sales to the worlds most populous nation. The new agreement calls for China to meet and exceed those levels by $12.5 billion in 2020 and $19.5 billion in 2021.

On the day of the pacts signing, however, soybean prices dropped to a one-month low. This was an unexpected result, given that soybeans in the past have made up half of US farm exports to China. Why would their price plummet on the day that China was pledging to buy more US farm goods than ever before?

Thats because Chinese Vice Premier Liu He said at the White House on January 15 that purchases of US farm goods would be based on market conditions.

The text of the agreement backs him up: The Parties acknowledge that purchases will be made at market prices based on commercial considerations and that market conditions, particularly in the case of agricultural goods, may dictate the timing of purchases within any given year. Theyll now use this as leverage to demand that President Trump remove the tariffs on their other exports.

That sounds to me like all the wiggle room the Chinese will need to renege on their promises. They have a long history of inventing bogus excuses to reject shipments of US farm goods, often as a hardball tactic to push for price reductions from anxious exporters. They wont have a tough time figuring out how to escape the terms of this deal.

If the Chinese even come close to buying the promised extra billions in US farm goods over the next two years, well be lucky.

The irony is that American farmers would be well served if our economic relationship with China were based entirely on market conditions. Lets buy and sell based on the free markets ability to connect buyers and sellers. We should build our policies not on the vagaries of managed trade but on the principles of free trade.

I grow alfalfa seed because I happen to live in what may be the worlds best place to raise them. The dry climate is ideal, our native bees help with pollination and we can tap our rivers for irrigation. Whats more, the alfalfa farmers we supply have easy access to the West Coast ports that ship to China.

When it comes to high-quality, low-cost production, nobody can beat us.

Much the same can be said about other products that American farmers grow, and Chinese consumers want, from soybeans to pork. Our trade diplomats serve us most effectively when they remove artificial political barriers such as tariffs and quotas.

As the Trump Administration moves from the Phase One to Phase Two in its talks with China, its negotiators will be wise to put more faith in the ability of American farmers to satisfy global markets.

We may have trouble controlling an outbreak of coronavirus, but we can limit the wheeling and dealing that seeks to manage trade through mandates. We just need the opportunities that free markets can provide on their own. Thats how to make farmers happiest and economically stable.

Note:  An earlier version of this op-ed was published in CNN Business on February 6, 2020.