초록 ▼

Apparatus and method for automatically irrigating and fertilizing a plurality of zones in a lawn and other botanical systems. A conventional underground sprinkler system may be employed having a source of liquefied fertilizer to be inserted into the main water supply or any of the zonal lines when w

Apparatus and method for automatically irrigating and fertilizing a plurality of zones in a lawn and other botanical systems. A conventional underground sprinkler system may be employed having a source of liquefied fertilizer to be inserted into the main water supply or any of the zonal lines when water is being delivered to one of the zones. A clock is used to establish a maximum duration of fertilizer delivery. Normalizing timers are employed to restrict the flow of fertilizer as a fraction of the maximum duration depending on which zone is being irrigated.

대표청구항 ▼

An arrangement for automatically introducing a chemical into a plurality of zones in a biological system comprising: a. a water supply system having a main water supply line, a plurality of headers for delivering water to each of said zones directly from said main supply line, normally closed on/off

An arrangement for automatically introducing a chemical into a plurality of zones in a biological system comprising: a. a water supply system having a main water supply line, a plurality of headers for delivering water to each of said zones directly from said main supply line, normally closed on/off water flow valve means in each of said headers to permit upon actuation flow of water into the respective header, and timer means for each of said water flow valve means for actuating its respective water flow valve means at selected staggered intervals and for establishing a length of time each said water flow valve means is open to permit flow of water into its respective zone; b. a source of liquefied chemical for said biological system; c. means for delivering said chemical from said source into said system when water is flowing; and d. said delivering means including control means for controlling a maximum duration of delivery of chemicals to said system from said source and separate normalizing means for each of said headers for selectively establishing a fraction of said duration during which said chemical is delivered to each of said headers.