Any varieties of Oats known to do better in the heat?

I manage a small farm specializing in superhot peppers and garlic. I recently watched a video, presumably by the Amish, demonstrating a method of growing oats and garlic on the same plot. In the video, they used a sickle bar mower to cut down a tall oat stand, followed by a scarifier to create furrows through the mowed oats. They then planted garlic in these furrows and covered them with the straw.

I am interested in implementing a similar method. This year, I planted spring oats with the intention of letting them go to seed before harvesting, aiming to drop them in July. My plan is to water them and obtain another oat crop to cut down in October, coinciding with the garlic planting season.

To optimize my yields for next year, I am seeking advice on the best oat varieties for summer planting, as I will be sowing the second crop in July.

Thank you.

Casey, welcome to the forum!

I am sorry no one has replied and I don't have an answer so I thought I would bump your thread to get another view.

Here are some threads about oats that folks might find interesting:

https://permies.com/t/238528/Hulless-Oats-Barley

https://permies.com/t/165978/Cover-cropping-oats-sheet-mulch

Two things:

What kind of heat tolerant? Are we talking West or East, dry or wet, what kind? How intense?

And sort of from the last one, how much water and when?

If you're in Arizona like I am, your best bet is to get your hands on a normal variety and plant in winter. Much the same for the other states with hot, dry summers- the winter is better for grains (excepting millet, sorghum, corn and rice [if you can somehow grow rice in the hot dry]) and the summer is better for fruits- the standard fare of grapes, cherries, potentially apples, peaches, plums and figs. If it's hot and wet during the summer, much the same, but plant right as the rain is slowing down for winter but before it stops (or drops off), so everything can germinate. If you're doing it in dry places, soak your grains for a day or so before they get sown, and water until they sprout, then water occasionally.

I wish you luck in your planting!

If you have a stock feed outlet close by, it might be worth asking them as the fodder is rarely transported over a great distance.  Not too much cold (relatively) in Australia, so the following is from an internet search.  These varieties may not be available where you are though.
"In Australia, popular oat varieties include milling oat varieties like Bannister, Williams, Carrolup, and Yallara, as well as hay varieties like Mulgara, Winjardie, and Wintaroo. These varieties are often bred for specific purposes, such as export quality hay or high-yield milling
oats."
I did read somewhere that each cereal grain has sufficient phosphorous in the seed coat (bran) for good germination and getting the plant established.  It appears to be beneficial for garlic.  My friend mulches his great garlic beds with field pea straw, also a source of phosphorous.