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Conversion of an existing olive orchard into a food forest or agroforest

 
Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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Post 1 Friday 25th Nov


We have 10ha under olives which we are planning on converting into a food forest/agroforest using permaculture principles. We plan to go slowly and are doing a trial on a small area. I am very grateful to Paul Barker for the help he has given with this trial. Will post a few images and comments on what we have done to date.

In early August (mid winter here) we put black plastic over all the weeds and cynodon dactylon growing between the olive trees and pomegranates. After 6 weeks all the weeds and grass appeared dead and we raked the dead cynodon runners and root out of the area.

In mid September we sowed the following seeds over the 1000m2 area. 0,5kg white clover 1.5kg red clover, 2.5kg lucerne, 1kg Lotus, 1kg Turnip, 4kg Cocksfoot (we inoculated the clover and lucerne). We actually mixed all the seed together in a few buckets with some coarse river sand to help with sowing the seed. Immediately after sowing we sprinkled a very light layer of composted organic matter over the seed. We kept the seeded area moist with overhead sprinklers. After 5-6 days the seeds started germinating and below is  the first photo we took of the project.
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Seeds germinating
 
Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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chicken forest garden trees
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Within a month the seeds had germinated really well. This image taken on 24th October 2016, shows a dense ground cover. The turnips definitely dominated but the clover and lucerne were also growing well. By this stage we also noticed that the olive trees had responded very well to the cover crop.
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Carl Pretorius
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Posts: 11
Location: Paarl, Western Cape, South Africa
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Post number 3

On the 9th November 2016 we made a decision that the cover crop had bulked up sufficiently to cut and drop. Before doing this we mixed 25kg of buckwheat seed with 40kg zeolite 1-3mm. This we sowed over the 1000m2 are and only then did we cut and drop the turnip, clover, lucerne and cocksfoot cover crop. This cover crop fell on top of the buckwheat seed. Areas where the seed was exposed to the air we covered with a very thin layer of organic compost.

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Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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Here is a hand sketch of the 1000m2 area we are doing our trials on. Any comments would be welcome. Particularly on tree, shrub and plant species that work well with olives.
Filename: Design123Sept2016pdf.pdf
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File size: 781 Kbytes
[Download Design123Sept2016pdf.pdf] Download Attachment
 
Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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Using trees in the agroforest/food forest we are developing

So far we have added the following trees to the 1000m2 area.

3 Acacia karroos (Sweet thorn). These trees are nitrogen fixers and their flowers attract bees. They wll also form part of the windbreak. Acacia karroo
2 Macadamia nut trees simply for their delicious nuts and as a windbreak. Not sure if they offer any other specific benefits to a foodforest
3 Tarchonanthus camphoratus (Camphor bush). These we hope will deter pests with their strong scent. See  Tarchonanthus

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Kalamata Olives, Tarchonanthus and Acacia trees
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Kalanatas are loving the attention.
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Acacia karroo and macadamia nut trees
 
Tracy Wandling
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What an exciting project! Are you going to be adding more fruit and nut tree varieties? What kinds of things are you hoping to grow in your food forest? Can't wait to see how it progresses.

Cheers
Tracy
 
Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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Thanks Tracy.

We started off with an existing orchard 1000m2 in area with 30 Kalamata olive and 11 pomegranate trees. 3 Kalamatas have died, so we have planted the Tarchonanthus in their position. We plan to dig out and bag about 15 of the olives and replace them with a few other trees. These include date palm, plum, nectarine, walnut, neem and lucern tree.
 
Carl Pretorius
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Location: Paarl, Western Cape, South Africa
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Here is a Google Earth view of the whole olive orchard (bordered in black+/- 10Ha) with the test/trial area circled in green.
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