IT IS IN THESE DIFFICULT NORTHERN REGIONS 
WHERE THE GROWING SEASON IS BOTH SHORT 
AND UNCERTAIN THAT THE P.M.Gs. REALLY SHOW 
THEIR WORTH. THEY ARE INDISPENSIBLE TO 
GROWERS IN THESE AREAS. 
Putting P.M.Gs. over the ground early also dries out the 
soil. This is important after a wet period in the Winter or 
Spring, when it is difficult to get a fine tilth for seed sowing. 
After the P.M.Gs. have been on the ground for ten days or 
so there is no difficulty in raking the soil down fine, for it 
will be “‘dried off’’ to the right ok 
(d) Seed sowing. © 
The seed is sown the same depth under P.M.Gs. as in the 
open but far fewer seeds are required, for under P.M.Gs. 
every seed grows. A vast economy of seed is thus effected. 
Learn to space small seeds 1 inch or 2 inches apart as 
the variety demands and thus save time, for there will be cS 
thinning out to do. I 
Under P.M.Gs. you can sow far earlier. February or March 
‘sowings may not be safe out of doors but they will be perfectly 
successful under continuous P.M.Gs., for they enable seeds 
to be sown much earlier in the Spring and much later in the 
Autumn, 
(e) Grace economy 
Crops under P.M.Gs. mature more quickly—they are not 
so long in the ground., In addition, there is little hoeing to 
do, so crops‘may be sown: closer together without any sacrifice 
of size or quality. Iwo rows can often be fitted into the 
space normally taken by one for this reason. 
If the rows of P.M.Gs. are then arranged close earee a 
small “‘alleyway’’ can be left between these and the next 
two rows. This enables the Bet snen to work down the rows 
with the greatest advantage. | 
_ 
‘(f) Ventilation 
Continuous P.M.Gs, ventilate theme automatically by 
means of the narrow aperture along the ridge. When the 
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