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T-MCULD. 
When a general set-back occurred in a citrus orchard in 
California, careful investigation showed that this was caused by 
deficiency of humus in the soil, which had become unable properly 
to support the trees. 
In order to save the orchard, the owners decided to treat 
the soil with Peat Muuld. It was of course essential to get the Peat 
Mould rightxinto the rooting area, but to do so with as little in¬ 
terference as possible with the well-being of the trees. The ope¬ 
ration was therefore spread over a period of four years, the treat 
ment being applied to one quarter of the area round every tree in 
each of four successive years. 
In each quarter section the soil was removed so as to 
expose the root system, and a mixture of peat mould and good soil, 
about half and half, was packed in as closely as possible between 
and round the roots, in such a way that as the roots developed, 
they were sure to find soil with a rich addition of peat humus. 
A fertilizer was added when preparing the mixture and the latter 
well damped after application. Advantage was taken of this exposure 
of the root system to cut away any roots showing signs of decay. 
In this way it took four years entirely to renew and im¬ 
prove the soil round each tree and its roots, and this was done 
without any damage or harm to the trees. 
The effect was immediate, and the whole orchard which had 
seemed doomed, was saved by a single and simple application of 
Peat Mould. It regained its.former vigour and health,- and at 
comparatively small cost to its owners. 
