"Keith Corwell" wrote in message
...
Hi all
I am going to ask another why question.
Why is it soo important that you water after you applied Fertilizers and
Bug
control


The reason is different for fertilizers and bug control.

For pelletized snail and slug bait, watering the pellets causes them to
expand and turn into a lump of poison impregnated sawdust. This reduces the
risk that the pellets will be eaten by pets or small children, that mistake
them for something tasty.

For granular fertilizers, watering afterwards removes the fertilizer dust
from the leaves. The dust can burn the plants, because it's too strong for
the plant to handle. Finally watering helps settle the fertilizer,
preventing it from being blown away, especially for finely ground "fast
absorbing" fertilizers.

Watering plants after applying insecticides is not always desirable. Read
the directions for the product you are using. Sometimes a residual is
desired, for example some aphid and ant pesticides recommend you mix in a
few spoonfuls of sugar to improve the effectiveness. Insecticidal soaps need
a dwell time to properly work, so do some fungicides, provided it's not
predicted to be a warm sunny day.

-S