Abstract: Underground irrigation apparatus (10) having a ground penetrating part (12) arranged for forming a hole (14) in ground (16) to be irrigated, and a separate distribution part (18) arranged for insertion into the hole (14) formed by the ground penetrating part (12) and dispensing a fluid into ground to be irrigated. Preferably, the ground penetrating part (12) is inserted into a socket (22) formed in the distribution part (18) when the latter is lowered into the hole (14) previously formed by the ground penetrating part (12) in order to prevent clogging of discharge ports of the distribution part (18) during the installation process.

Abstract: A mixer-injector device for introducing incrementally controllable amounts of active chemical reagent into a carrier fluid for delivery to a preselected location. Each device includes means for directing a pressurized carrier fluid thereinto and selectively through an interchangeable catridge coacting with a strategically disposed reagent delivery system to admix a predetermined amount of the chemical reagent therewith in response to pressure control means operatively associated therewith.

Abstract: A liquid herbicide applicator mechanism mountable on a farming vehicle for wipingly applying the herbicide on undesired vegetation growing in a cultivated field. The applicator mechanism includes a tool bar for carrying a plurality of herbicide dispenser assemblies so that they alternately align with the rows of crop plants and the spaces therebetween as the vehicle moves through the cultivated field. Each of the herbicide dispenser assemblies receives the herbicide from a reservoir tank under the influence of gravity and has a herbicide wiper head which absorbs the herbicide for wiping application on the undesired vegetation. Each of the herbicide wiper heads is substantially rigid but deformably configurable so that it may be shaped into substantial conformity with the contour of the crop plant rows and the spaces in the cultivated field and each wiper head is provided with special absorbent wiper elements.

Abstract: A hand-held liquid herbicide applicator for wipingly applying the liquid herbicide on undesired vegetation. The applicator includes an elongated tubular handle for containing a supply of the liquid herbicide with a valve at the lower end of the handle to control the flow of herbicide from the handle to an applicator head carried on the bottom of the handle. The applicator head includes a demountable sponge of special configuration in that it has a porous relatively dense skin which causes even and complete saturation of the entire sponge to prevent uncontrollable liquid flow in one or more localized parts of the sponge.

Abstract: A hand-held liquid herbicide applicator for wipingly applying the liquid herbicide on undesired vegetation. The applicator includes an elongated tubular handle having a supply container on its upper end with a special differential pressure operated vent valve in the container. A flow control valve is mounted in the handle for controlling the flow of the liquid herbicide through the handle to an applicator head carried on the bottom of the handle. The applicator head includes an especially configured synthetic sponge which is formed with a porous relatively dense peripheral skin so that the liquid herbicide received from the handle will evenly saturate the entire sponge to prevent uncontrollable liquid flow in one or more localized parts of the sponge.

Abstract: An apparatus for selective application of liquid herbicide includes a tubular handle which serves as a reservoir for containing the herbicide and for supplying the herbicide to an integral applicator head. The reservoir handle has a valve for controlling the herbicide dispensing flow rate of the applicator head which includes at least one elongated wicking element by which the herbicide is wipingly applied on undesired vegetation.

Abstract: A liquid applicator for wipingly applying various liquids to various items includes a liquid supply container mounted on one end of a tubular handle with a shutoff valve for metering liquid flow to the handle. A pair of applicator heads adapted for different liquid application movements are interchangeably mounted on the other end of the handle, and each of the applicator heads have a liquid distributor tube for evenly dispensing the liquid to a wicking element carried by the applicator head.