The ornamental design for an agricultural supportstake, as shown and described.
FIG. 1 is a front elevational view of an agricultural support stake showing
my new design, the adjacent sides and rear being substantially similar in
appearance, and the detail of the spiralling ribs as shown in FIGS. 4 and
5 being omitted for ease of illustration;
FIG. 2 is an enlarged end elevational view thereof;
FIG. 3 is an enlarged opposite end elevational view thereof;
FIG. 4 is an enlarged front elevational view thereof, shown broken-away for
ease of illustration; and,
FIG. 5 is an enlarged fragmentary front elevational view thereof, with
portions omitted for ease of illustration.