Eight months on from the opening salvos of President Donald Trump's trade war, and the real-world impacts are starting to be felt across the globe.

Business Insider took a look at some of the companies and industries blaming a downturn on the president's trade policy.

The world's largest shipping company, American farmers, and small manufacturers are among those that have explicitly blamed tariffs for issues in their businesses.

Eight months on from the opening salvos of President Donald Trump's trade war, and the real-world impacts are starting to be felt across the globe.

The US, which the trade war was ostensibly launched to protect, looks as if it is likely to be the worst affected, with some forecasters suggesting that as much as 1 percentage point could be knocked off economic growth in the coming years.

Read more: Volvo's $30 billion IPO is officially off, and Trump's trade war is to blame

On a smaller scale, companies and whole industries are already starting to feel the pinch from the US tariffs, which have raised the price of sending a whole range of goods to the US, increasing costs for the very companies they were designed to protect.

Business Insider decided to take a look at some of the major businesses and industries that have blamed the president's trade war for a negative impact on their situation.

Shrinking global trade, and hurting shipping companies at the same time

Empty Maersk shipping containers at Peel Ports container terminal in Liverpool. Thomson Reuters

Maersk, the world's largest shipping firm, has been particularly explicit about the threats posed by the tit-for-tat tariffs between the US and China.

In its third-quarter results announcement earlier in November, the Danish giant said global trade was already feeling the effect.

Global container trade continued to lose momentum in the quarter. It has suffered "a much slower pace of growth" this year, rising by 4.2% compared with 5.8% over the same period in 2017, Maersk said.

Trade tariffs may end up stifling global container shipping by as much as 2% in the next two years. The company estimates that those tariffs make up about 2.6% of the global value of traded goods.

Maersk's warning was not the first time the shipping giant had weighed in on the trade war. CEO Soren Skou said in August, before Trump hit swaths of consumer goods with levies, that the fallout from the tariffs "could easily end up being bigger in the US."

Farmers forced to leave their crops to rot

A bushel of soybeans on display in the Monsanto research facility in Creve Coeur, Missouri. Tom Gannam/Reuters

Perhaps one of the most striking consequences of the trade war is what is happening to some farmers in the US.

For many agricultural goods, particularly soybeans, China is the largest export market for US farmers. That's changing thanks to Trump's tariffs, with Chinese importers looking elsewhere for a cheaper supply.

China last year accounted for about 60% of US soybean exports, but such is the lack of demand this year that many farmers are being forced to abandon crops.

Farmers in some US states are being forced into plowing their crops under — effectively burying them under soil in fields — as there is not enough room to store them in storage facilities, and they are unable to sell their products thanks to Chinese tariffs, Reuters reported last week.

All grain depots and silos are almost full, meaning farmers have to find their own storage solutions or allow their crops to rot. Neither option is particularly palatable.

In Louisiana, as much as 15% of this year's soybean crop has been plowed under or is too damaged to sell, according to data analyzed by Louisiana State University staff and cited by Reuters.

An industry Trump says he wants to help is suffering

Much of Trump's reasoning behind the trade war is to reinvigorate the US manufacturing sector, which he said has been ground down by decades of cheaper production in Asia, particularly in China. Early signs, however, suggest the tariffs are doing the opposite and are actively hurting manufacturers.

Manufacturing activity in the US slowed to a six-month low in October, with industry figures citing future protectionism and widespread uncertainty as major reasons for the slowdown.

"For the consumer, the tariffs are for the most part still an abstract idea, but for manufacturers they are real, and a big problem," Ian Shepherdson, the chief economist at Pantheon Macroeconomics, wrote at the start of November when data from the Institute for Supply Management showed just that.

The ISM, a trade group of purchasing executives, said its index of national factory activity dropped 2.1 percentage points to 57.7 in October from a month earlier. The decline was largely thanks to uncertainty related to tariffs, according to survey respondents.

"Mounting pressure due to pending tariffs," observed one respondent in the ISM survey. "Bracing for delays in material from China — a rush of orders trying to race tariff implementation is flooding shipping and customs."

Such a view is corroborated by analysis from the Swiss banking giant UBS, which argued that many new and smaller manufacturers could end up being forced into bankruptcy.

"Brand new firms notoriously have very thin margins and a lack of ability to pass on costs," Seth Carpenter, UBS' top US-focused economist, said earlier this month. "Small cost shocks tend to cause large disruptions to new firms. We see some of these new firms failing."

Many small firms have blamed the trade war for layoffs this year.

For instance, Element Electronics, a TV manufacturer, says it plans to lay off 127 workers from its South Carolina factory as "a result of the new tariffs that were recently and unexpectedly imposed on many goods imported from China."

One of America's most iconic brands is slashing 14,000 jobs

General Motors on Monday announced plans to close plants in the US and ax about 14,000 jobs, having previously warned that Trump's tariffs might force it to do so.

The automaker, which employs about 110,000 workers, said it planned to cut costs by shutting plants in Ohio, Michigan, and elsewhere in North America.

The company did not specifically mention tariffs, instead citing "changing market conditions and customer preferences" among its reasons, but earlier this year GM lowered its profit forecasts for 2018 amid higher steel and aluminum prices caused by new US tariffs. And in June, GM warned that trade tariffs could lead to job losses and lower wages, telling the Commerce Department that higher steel tariffs would affect competitiveness.