Water balance irrigation scheduling based on Jensen-Haise equation : software for Apple II, II+, and IIE computers

dc.creator.authorStegman, E.C.
dc.creator.authorCoe, D.A.
dc.date.accessioned2009-04-17T15:11:32Z
dc.date.available2009-04-17T15:11:32Z
dc.date.issued1984
dc.description.abstractDevelopments in applied methods for estimating crop water use (evapotranspiration) have made it possible to estimate root zone soil moisture deficits in irrigated fields with reasonable accuracy. A zero soil moisture deficit (SMD=O) implies that the root zone storage capacity (influenced by soil textures and rooting depths) is filled to "field capacity." Day-to-day crop water use produces a water deficit, whereas irrigations and rainfalls (when they occur) reduce the deficit. Irrigation scheduling implies that at some level of water deficit an irrigation system must be started and run until the prevailing deficit is reduced to lower levels if near maximum yield is the production goal. The following material includes an algorithm for irrigation scheduling, source code with documentation (written in Applesoft Basic), and a users guide.en_US
dc.identifier.urihttps://hdl.handle.net/10365/3573
dc.publisherNorth Dakota State University
dc.rightsNorth Dakota State Universityen
dc.sourceNorth Dakota Research Report; 100en
dc.subject.lcshComputersen_US
dc.subject.lcshIrrigationen_US
dc.titleWater balance irrigation scheduling based on Jensen-Haise equation : software for Apple II, II+, and IIE computersen

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