Abstract: Systems and methods of the present disclosure include the use of a tracer in agricultural spray solutions, and preferably a metal tracer, to determine if off-target drift of an active ingredient (AI) is based on drift caused during application or volatility of AI after application.

Abstract: An animal watering valve preferably includes a valve device, a check ball, a screen disc and retention tail. The valve device preferably includes a valve body, a valve stem, a retention plug, a stem o-ring and a compression spring. The valve body preferably includes a threaded shank. A valve bore is formed in the valve body to receive the valve stem. A plug bore is formed in the threaded shank. The retention plug preferably is threaded into the plug bore. The retention tail preferably includes a receiver body and an attachment shaft. The receiver body includes a ball tapered counter bore to receive the check ball and a screen counter bore to receive the screen disc. The threaded shank tap is sized to threadably receive the threaded shank of the valve body. A valve extender is used to increase a length of the animal watering valve.

Abstract: An animal watering valve preferably includes a valve body, a valve stem, a retention plug, a stem o-ring and a compression spring. A valve bore is formed in the one end of the valve body to receive the valve stem. A plug bore is formed in the opposing end of the valve body. The valve stem preferably includes a sealing base, an actuation end, a plug end and a spring flange. An o-ring groove is formed in the sealing base to receive the stem o-ring. The retention plug preferably includes a threaded portion, a rotation flange and a stem portion. A stem bore is formed through the retention plug. The stem bore is sized to loosely receive the plug end of the valve stem. The plug end is inserted into the compression spring. The retention plug is threaded into the plug bore to retain the valve stem.

Abstract: A drinking valve for automatic water feeding systems for animals includes a valve stem that is responsive to licking at the outlet of the valve by an animal, to open and close a valve seat and thereby control flow of drinking water to the outlet of the valve. The valve seat is constructed with low-cost reliable arrangement including stationary but compressible elastomeric seal configuration.