I think that the Yanmar is pulling a blade to level the mud/soil in the paddy. I think that there is a second machine in the background on tracks, separate from the Yanmar, but I do not recognize what it is. It doesn't look to me as the second machine has enough flotation to be a planter, as those fairly narrow steel tracks would disrupt the seed bed/ paddy, but what do I know?The ones with faded paint aren't ugly, they're just ancient. But apparently still in service and running great.
What is the YM3000 with steel paddy 'tires' towing? The towed rig is on treads, and has an engine and an operator seat. Rice planter?
i think you have a random Kubota in there too.