A downforce control system for an agricultural implement, comprising: a first downforce controller including a first actuator having a first chamber and a second chamber, a first manifold coupled to said first actuator, and a first pressure control valve coupled to and supported by said first manifold, said first pressure control valve being in fluid communication with said first manifold and said first chamber; a second downforce controller including a second actuator having a third chamber and a fourth chamber, a second manifold coupled to said second actuator, and a second pressure control valve coupled to and supported by said second manifold, said second pressure control valve being in fluid communication with said second manifold and said third chamber; and, an electronic controller, said electronic controller being in electrical communication with said first pressure control valve and said second pressure control valve, said electronic controller being configured to generate a first signal corresponding to a desired pressure in said first pressure control valve and a second signal corresponding to a desired pressure in said second pressure control valve; characterised in that; said first manifold is supported by said first actuator and said second manifold is supported by said second actuator; said downforce control system further comprises: an inter-row supply hose (412; 414) extending between said first downforce controller and said second downforce controller, wherein said inter-row supply hose is supported at a first end by said first downforce controller, and wherein said inter-row supply hose is supported at a second end by said second downforce controller; and, a third pressure control valve in fluid communication with said second chamber and said fourth chamber; said electronic controller being in electrical communication with said third pressure control valve and configured to generate a third signal corresponding to a desired pressure in said third pressure control valve. a first downforce controller including a first actuator having a first chamber and a second chamber, a first manifold coupled to said first actuator, and a first pressure control valve coupled to and supported by said first manifold, said first pressure control valve being in fluid communication with said first manifold and said first chamber; a second downforce controller including a second actuator having a third chamber and a fourth chamber, a second manifold coupled to said second actuator, and a second pressure control valve coupled to and supported by said second manifold, said second pressure control valve being in fluid communication with said second manifold and said third chamber; and, an electronic controller, said electronic controller being in electrical communication with said first pressure control valve and said second pressure control valve, said electronic controller being configured to generate a first signal corresponding to a desired pressure in said first pressure control valve and a second signal corresponding to a desired pressure in said second pressure control valve; characterised in that; said first manifold is supported by said first actuator and said second manifold is supported by said second actuator; said downforce control system further comprises: an inter-row supply hose (412; 414) extending between said first downforce controller and said second downforce controller, wherein said inter-row supply hose is supported at a first end by said first downforce controller, and wherein said inter-row supply hose is supported at a second end by said second downforce controller; and, a third pressure control valve in fluid communication with said second chamber and said fourth chamber; said electronic controller being in electrical communication with said third pressure control valve and configured to generate a third signal corresponding to a desired pressure in said third pressure control valve. an inter-row supply hose (412; 414) extending between said first downforce controller and said second downforce controller, wherein said inter-row supply hose is supported at a first end by said first downforce controller, and wherein said inter-row supply hose is supported at a second end by said second downforce controller; and, a third pressure control valve in fluid communication with said second chamber and said fourth chamber; said electronic controller being in electrical communication with said third pressure control valve and configured to generate a third signal corresponding to a desired pressure in said third pressure control valve.