It is
one of the most important of feeding stuffs.

=Pruning=: trimming or cutting parts that are not needed or that are
injurious.

=Pulverize=: to reduce to a dustlike state.

=Pupa=: an insect in the stage of its life that comes just before the
adult condition.

=Purity= (of seed): seeds are pure when they contain only one kind of
seed and no foreign matter.

=Ration=: a fixed daily allowance of food for an animal.

=Raupenleim=: a patented sticky substance used to catch the cankerworm.

=Resistant=: a plant is resistant to disease when it can ward off
attacks of the disease; for example, some varieties of the grape are
resistant to the phylloxera.

=Rotation= (of crops): a well-arranged succession of different crops on
the same land.

=Scion=: a shoot, sprout, or branch taken to graft or bud upon another
plant.

=Seed bed=: the layer of earth in which seeds are sown.

=Seed selection=: the careful selection of seed from particular plants
with the object of keeping or increasing some desirable quality.

=Seedling=: a young plant just from the seed.

=Sepal=: one of the leaves in the calyx.

=Set=: a young plant for propagation.

=Silo=: a house or pit for packing away green food for winter use so as
to exclude air and moisture.

=Sire=: father.

=Smut=: a disease of plants, particularly of cereals, which causes the
plant or some part of it to become a powdery mass.

=Spike=: a lengthened flower cluster with stalkless flowers.

=Spiracle=: an air opening in the body of an insect.

=Spore=: a small body formed by a fungus to reproduce the fungus. It
serves the same use as seeds do for flowering plants.

=Spray=: to apply a liquid in the form of a very fine mist by the aid of
a spraying pump for the purpose of killing fungi or insects.

=Stamen=: the part of the flower that bears the pollen.

=Stamina=: endurance.

=Sterilize=: to destroy all the germs or spores in or on anything.
Sterilizing is often done by heat or chemicals.

=Stigma=: the part of the pistil that receives the pollen.

=Stock=: the stem or main part of a tree or plant. In grafting or
budding the scion is inserted upon the stock.

=Stover=: as used in this book the word means the dry stalks of corn
from which the ears have been removed.

=Subsoil=: the soil under the topsoil.

=Sulphur=: a yellowish chemical element; brimstone.

=Taproot=: the main root of a plant, which runs directly down into the
earth to