In the heat the roots are kept cool and the loss of humidity of the soil and
the weed growth is reduced. During heavy rain, the layer of mulch avoids the soil
from becoming muddy and being washed out. At the same time the layer of mulch starts
composting and hence the humus is formed which ends as organic manure. Earthworms and other
small animals bring the mulch material into deeper soil layers by thus converting it into
valuable vegetable nourishment for plants.
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