Nyanzvi dzeAgronomist nemasaenzi evhu vanogadzirira nzira dzakanakisa dzevarimi kuti dzivabatsire kuita sarudzo dzine ruzivo pamusoro pekutonga minda yavo nezvirimwa. Rintaro Kinoshita pamwe nechikwata chevaongorori vakaona kuti chishandiso chakadai se "Apparent Electrical Conductivity (ECa) Sensor" chinogona kupa ruzivo rwakakosha nezveminda yekurima, inoshuma. webhusaiti yepamutemo yeAmerican Society of Agronomy.
Kinoshita mubatsiri wapurofesa paObihiro University of Agriculture and Veterinary Medicine, Japan, asi akaita tsvakiridzo iyi ari paCornell University, USA.
Kutsvakurudza rakabudiswa muAgronomy Journal, chinyorwa cheAmerican Society of Agronomy.
Zvechokwadi, ivhu nemaitiro aro ndezvimwe zvezvinhu zvakakosha pakurima. Kusiyana kwenzvimbo mugoho kunoenderana zvikuru nezvinhu zvitatu: topography, ivhu, uye tumbuyu/zvirwere.
Varimi vanowanzovimba nekuongorora ivhu kuti vanzwisise maitiro evhu, asi zvinotora nguva uye zvinodhura. Kinoshita nechikwata vakashandisa tekinoroji inovabvumira kuunganidza ruzivo rwakasiyana-siyana rwezvirimwa nevhu pasina kuchera ivhu. Aya masensa anogona kutakurwa nemidziyo yekurima sematarakita uye anopa ruzivo rwakakosha. Kuti vaenzanise ruzivo, vatsvakurudzi vakaenzanisa data kubva kuma sensors avo nemigumisiro yekuongororwa kwemasampuli evhu.
Chidzidzo ichi chakaitwa padunhu reMaryland neDelaware (matunhu eCoastal Lowland nePiedmont Plateau). Chikwata ichi chakaongorora minda yechibage makumi maviri nenhanhatu munzvimbo mbiri dzakasiyana dzenzvimbo nenzvimbo.
Iyo inooneka magetsi conductivity (ECa) sensor yakaratidza kuve yakabudirira zvakanyanya mukuongorora zvimiro zvevhu zvichienzaniswa nesamples dzevhu dzakatorwa. Masensa aya akakwanisa kufanotaura chimiro chevhu, kunyanya pakadzika kwakasiyana, uye kuwanikwa kwemvura. Sezvo mvura iriyo yega nhanho yekuitisa, kuyerwa kwezvimiro zvevhu zvinokanganisa kuwanikwa kwemvura zvinogona kufanotaurwa uchishandisa ECa. Izvo zviyero zvine chekuita nehunyoro hwevhu uye goho rechibage, iro ruzivo rwakakosha kuvarimi.
Chikwata chakaedzawo mamwe matekinoroji, asi mhedzisiro yacho yanga isingaite seyakajeka conductivity sensor. Mukana wekutora data rekuyera nema sensors nderekuti inoitwa nekukasira, kazhinji ichitora maawa 1-2 pamaeka makumi mashanu ega ega. Kune rimwe divi, kuongorora kwepakati pevhu kunogona kutora mavhiki kana dzimwe nguva mwedzi, zvichienderana nemamiriro evhu.
Kinoshita anotsanangura kuti kuitira kuti zvigadzirise zviri nani zvirimwa, zvakakosha kutanga kutanga kubhadhara zvakanyanya kune zvakadzika zvakadzika zvevhu, uye ECa sensor inogona kubatsira zvikuru munyaya iyi.
Ichi chidzidzo chakatsigirwa naWillard Agri-Service weFrederick, Inc. inotsigirwa neJoint Japan/World Bank Graduate Scholarship Chirongwa.
Mukuwedzera, Obihiro University iri kushanda mukati chirongwa chekuchinjanisa ruzivo rweagronomic neYunivhesiti yeWisconsin-Madison. Ose dunhu reObihiro kuJapan neWisconsin muUnited States anorima zvirimwa zvakafanana: mbatatisi nesoyabhinzi. Chirongwa ichi chakanangana nehurongwa hwekudya uye sainzi yevhu.