Natural gas is used to produce hydrogen, which is then used in the Haber-Bosch process to produce ammonia from nitrogen in the atmosphere. Only about 6% of natural gas is used to produce hydrogen, so even if the price were to rise substantially, we could divert natural gas from other uses and have plenty for making ammonia. We also have other ways of producing hydrogen, it's just that natural gas is more established.

PEM electrolyzers paired with cheap solar in countries with high insolation can now produce hydrogen for less than the cost of natural gas, but we're only recently starting to see the construction of the large-scale green ammonia plants needed to accomplish this. Egypt is currently constructing a 100-MW green ammonia plant powered by solar energy. Even if you didn't have enough PEM eletrolyzers you could still just pass current through some salt water and produce hydrogen, albeit much less efficiently.

It's not going to be a catastrophic issue.

A lot of dreamers here who never actually tried to grow something. A lot of YouTube video knowledge but no practical experience.

Its damn difficult to grow your own food. I think buying canned goods and storing them is the best option for almost everyone instead of trying to grow your own.

Yes.

Blame Americans. 

You think food prices will come back down after it's all over?

Plant a vegetable garden?WHERE?

DO YOU THINK I CAN AFFORD A YARD?

You should always feel free to grow a garden, but you shouldn’t necessarily expect it to be cheaper than buying food. Especially the first year, if you don’t live in a place where you can just dig up some dirt and chunk seeds in it. Even if you do you should make sure the soil isn’t literally toxic first, especially since it’s common to have a buildup of things like lead or arsenic from now-outlawed fertilizers that can be absorbed by plants.

My grandparents planted maybe half an acre? Of crops for 10 people, and it was supplemental, not a complete replacement. It also takes a lot of work and can go to shit if the weather is bad. You can account for some of this by planting a variety of crops, trying to head off drainage and shade issues before they start, and with supplemental watering. But don’t expect everything to be super productive every year, especially in the age of climate change. My sister had some plants not put out at all last year (peppers).

Grow a garden where? On what fucking land lmao

It's not just fertilizer:

it takes about 7.3 units of (primarily) fossil energy to produce one unit of food energy

Assessing the sustainability of the US food system: a life cycle perspective

With all the fertilizer, heavy equipment and agricultural practices the food production today is very inefficient from an energy perspective.

Without cheap, abundant energy available the whole food production system is not sustainable

Is this a good time to mention that animal ag is the most wasteful form of food we have? Further, consider capitalism and western rich countries. If the choice is between feedin poor people and feeding cows, what choice will the money make?

What are pulses?

Most chemical fertilizer is synthesised from LNG.

The two biggest exporters are Russia (sanctioned) and Qatar (all plants shut down)

Good thing my country exports 90% of its agricultural produce, so if we start getting hungry then we'll just export a bit less.

(We learned the hard way a long time ago when we ran out of potatoes.)

How worried should I be? And how much should I doom prep?

Edit: doom prep might have been a strong word, meant how much shelf stable food to stock up on but someone already answered that. Just have normal amount for regular emergencies.

It's a little late to start a food garden. You won't be getting any harvests for a while, and it won't be much. Best to stock up on shelf-stable goods now, and build community for mutual aid.

My partner and I are in conflict about food storage. I buy beans, pasta, and jarred foods when I'm stressed. He doesn't like sacrificing storage space and I think just sees it as clutter.

Anyways, I'm going to pick up more pasta, pasta sauce, and canned soup. Boxed macaroni and cheese. Stuff I know we'll cycle through and doesn't need much effort to cook because I know when things get bad I won't want to brain much.

Oh! LPT: textured vegetable protein is shelf stable dried soy protein and you can rehydrate it to add a ground beefy texture to things, like macaroni and cheese or pasta sauce.

Piss in a bucket. There's your ammonia.

In case anyone was wodering how much damage a single idiot in the White House can cause.