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woko said..
Yeh it's more to do with picking the nut up of the ground, it's most effective to use a type of rolling rake that flips the nut up into a catcher, it doesn't work so well if there's trash on the orchard floor ( grass, stick etc) and if you have contours the fallen nut gets washed into the contour and is buried with the loose top soil and can't be harvested.
So unfortunately erosion is encouraged, and when it rains in the hills around Lismore the Richmond runs red. No wonder it made it into the top rooted rivers list
This is the old way to manage a maca orchard. Grass between the trees was killed off by both shade from the trees and herbicide. This made it easier to collect nuts from the ground.
For at least ten years macadamia growers have been encouraged to grow the soil through applying organic matter, pruning trees and planting shade tolerant grass. Many growers are doing this and they have found trees are healthier and more productive when the soil is alive and healthy.
My land is on a slope so it could potentially suffer from erosion. I'll do my best to minimise erosion.
I don't have a harvester or tractor yet. I'll look at getting one with the bristles that pick the nuts off the ground. I'll see if I can get away without a sweeper on it by having the harvester set to the side so it go under the trees.
There will be a lot of problems I look forward to trying to work out.