[vorpalhex]

Can you reduce the weight if you go slower? I realize there is still a floor threshold here.

Optimizing for time matters when paying people is involved but machine costs don't matter so much per hour.

[nradov]

No, reducing speed wouldn't significantly reduce weight. Nor is there an actual need to reduce weight in the first place.

Machine costs do matter by hour. Tractors and harvesters are extremely expensive and there is only a limited time window to get the work done. Going slower means that farmers would have to buy more machines.

[aaronbaugher]

When you're tilling, planting, or harvesting, you're often trying to beat the rain or the season. You don't want to go any slower than necessary.

[s1artibartfast]

Simply put, food goes bad.