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vegetable growing techniques
Carrots - large images
Illustration of how to lay shadecloth over a carrot bed 1
Lay polypipe sticks across the rows of planted carrot seeds, cover with 50% shadecloth and pin the sides.
Illustration of how to lay shadecloth over a carrot bed 2
When the carrot seedlings are pushing up against the shadecloth remove both the shadecloth and polypipe sticks.

Large pphoto of polypipe sticks laid over rows of sown carrots
13mm polypipe sticks laid across rows of newly sown carrots (under the lighter sandy looking soil).
photo of shadecloth over carrot bed
The same rows after 40% shadecloth has been placed across it.  The edges are held in place with a short star picket (top) and netting pegs (bottom).  The polypipe sticks keep the shadecloth just off the soil.
For extra protection against slugs and snails the edges can be buried in the soil.
Large phot of damage done to carrots by cockchafers
LEFT: Damage to carrots caused by small cockchafer grubs.  RIGHT: The same carrots after they have been cleaned up using a potato peeler.