Abstract: An agricultural particulate material delivery system for delivering metered agricultural particulate material to a growing medium includes first and second compartments adapted to contain different agricultural particulate materials, a material meter having an interior and a flow switching mechanism between the first and second compartments and the meter. The flow switching mechanism is actuatable between a first position in which the flow switching mechanism supplies material from the first compartment to the interior of the meter, a second position in which the flow switching mechanism supplies material from the second compartment to the interior of the meter and a third position in which the flow switching mechanism stops the supply of material from both the first and second compartments to the interior of the meter.

Abstract: An agricultural particulate material delivery system for delivering metered agricultural particulate material to a growing medium includes first and second compartments adapted to contain different agricultural particulate materials, a material meter having an interior and a flow switching mechanism between the first and second compartments and the meter. The flow switching mechanism is actuatable between a first position in which the flow switching mechanism supplies material from the first compartment to the interior of the meter, a second position in which the flow switching mechanism supplies material from the second compartment to the interior of the meter and a third position in which the flow switching mechanism stops the supply of material from both the first and second compartments to the interior of the meter.

Abstract: A transversely and linearly elongated tractionally supported tool-carrying frame for agricultural implements having caster wheels which are shiftable individually and vertically relative to the frame to move the latter, and consequently the tools, between raised inoperative and lower earth-working positions. A central tractor hitch on the frame enables the latter to be pulled in broadside fashion forwardly for earth-working purposes when the frame and tools are in their lowered earth-working positions, and a second tractor hitch at one end of the frame enables the latter to be pulled linearly sidewise for transport purposes when the frame and tools are raised. A salient feature of the invention resides in a novel arrangement for automatically latching one of the caster wheels against free caster trailing during such sidewise transport movement of the implement to thereby lend a stabilizing influence to the implement and inhibit side sway.