I've been learning how the locals down here in the tropics plant their crops. Hired a farmer to show me on my property. They clear with machetes and let the weeds rot into the ground, punch holes with a spading fork, put a bit of dirt downhill from each hole to hold the water, throw in a few corn and pigeon pea seeds and bam - hillside of corn. Lots pore detail in my post.
Attached is a diagram I worked out showing how the system works. Always something new to learn.