Te retawhenua pūtētē rotoiti he tikanga tuatahi tēnei ki te whakawai i ngā hua kai ki roto i tētahi pā. He mōhio rawa atu i ngā karaehe me ngā pūhukihuki, e whai ana ngā kaiwhakaawe i runga i tētahi mīhini nui i tae noa ki tētahi peke mata raukura nui, hei whakawai i ā rātou whenua. Kei tēnei rerenga he uenuku nei "pivot" e haere ana i raro i tētahi wāhi porowhita, me te whakawai i ngā whenua i a ia e haere ana. He momo tēnei i te mea he robot whakahau kia kitea ai e ia katoa ngā rākau ka tangohia te wheako pai o te wai hei whakatika i te oranga pai me te rangatira.
I mua i central pivot irrigation system , kōwhiri ngā kaiwhakaako i te ua rānei ko te tārai niho roa ki runga i ō rātou māra kia tae ai ki te whakawāhi mahinga. Kāre ihea nei i te pai. Nā te hanga o te pūtahi tāngata, ka āhei i ngā kaiwhakaako kia wāhi ake ngā māra, ahakoa iti rawa te wā. Hei reira, ka puta i te nui o te kai i roto i te wā e hāngai ana, kāore i te mōhio.
Te nui o te paunga o te mahi whakarite wai i te pikitanga matua mātauranga he whakamana i ngā kaiwhakaako kia tiaki i te wai. Ki te pai rawa te whakawāhi i ngā mahinga, ka manaaki ngā kaiwhakaako i te nui o te whakamahi i ia droplet. Ko tēnei e hīkoi ana i te wā e kore ai te wai hei kitea rānei hei utu. Ka noho whakatika anō hoki ngā whatu o te pūtahi tāngata, ka taea e ngā kaiwhakaako te whakatipu i ō rātou wā me te huarahi ki ēnei kaupapa.
Kāore te whakamahere wai i raro i te pūtahi matua he mea wehe noa ki te waipu whenua; he pai ake tēnei mō te āheinga o ngā kai. E taea ana e ngā pūtahi matua nei te whiwhi i te kai nui i runga i te wāhi ake, mā te tuku wai ki runga i ngā niho o ngā rerenga. Koia nei te nui ake i ngā pūtake me te nui ake i ngā kai hei kai iho mō te hunga. Utu whakarite wai puaki tuakeke e whiwhi ai i te āhua o te wai e tae mai ki ōna kai, ā, e whakawhiti kī ai i te hē o te roa raweke rānei, o te iti raweke rānei i te wai, e kino ana ki ngā rerenga.
Ki te ao e nui ake nei te hunga, e nui rawa atu te hiahia mō ngā tikanga mahi pūmau. Ka whakamahi ngā mihinare ki te whakamahere wai i raro i te pūtahi matua hei whakapai i te whakamahi i te wai, ā, hei whakaiti i te whenua hei hanga i te nui o ngā kai. Kāore anō he pai tēnei mō te taiao, engari ka taea he kai nui mō āpōpō. Ka whakamanahau ia ngā mihinare ki te hanga i tētahi āheinga pai me te tiaki i te waokore mō te katoa. pūnaha whakawehi wai mā te hangarau.