Hoʻomākaukau nā Agronomists a me nā ʻepekema lepo i nā hana maikaʻi loa no ka poʻe mahiʻai e kōkua iā lākou e hoʻoholo i ka ʻike e pili ana i ka mālama ʻana i kā lākou māla a me nā mea kanu. Ua hoʻoholo ʻo Rintaro Kinoshita a me kahi hui o nā mea noiʻi e hiki i kahi mea hana e like me ka "Apparent Electrical Conductivity (ECa) Sensor" ke hāʻawi i ka ʻike koʻikoʻi e pili ana i nā māla mahiʻai, nā hōʻike. pūnaewele kūhelu o ka American Society of Agronomi.
He loea kōkua ʻo Kinoshita ma ke Kulanui o Obihiro o ka Mahiʻai a me ka lāʻau lapaʻau lāʻau lapaʻau, Iapana, akā ua alakaʻi ʻo ia i kēia noiʻi ma ke Kulanui ʻo Cornell, USA.
Huli ua paʻi ʻia i loko o ka Agronomy Journal, kahi hoʻolaha o ka American Society of Agronomi.
ʻOiaʻiʻo, ʻo ka lepo a me kona mau hiʻohiʻona kekahi o nā mea nui loa no ka mahiʻai. ʻO ka hoʻololi ʻokoʻa ʻana o ka nui o nā mea kanu e hilinaʻi nui ʻia ma nā kumu ʻekolu: topography, lepo, a me nā pests/maʻi.
Ke hilinaʻi pinepine nei ka poʻe mahiʻai i ka hoʻāʻo ʻana i ka lepo no ka hoʻomaopopo ʻana i ka waiwai o ka lepo, akā lawe lākou i ka manawa a he pipiʻi. Ua hoʻohana ʻo Kinoshita a me ka hui i ka ʻenehana sensor e hiki ai iā lākou ke hōʻiliʻili i nā ʻike hua like ʻole a me ka lepo me ka ʻole o ka ʻeli ʻana i ka lepo. Hiki ke lawe ʻia kēia mau mea ʻike me nā mea mahiʻai e like me nā tractor a hāʻawi i ka ʻike koʻikoʻi. No ka calibrate i ka ʻike, ua hoʻohālikelike ka poʻe noiʻi i ka ʻikepili mai kā lākou mau mea ʻike me nā hopena o nā loiloi o nā laʻana lepo.
Ua mālama ʻia ke aʻo ʻana ma ka ʻāina o nā mokuʻāina ʻo Maryland a me Delaware (nā ʻāpana o ka Coastal Lowland a me ka Piedmont Plateau). Ua ʻimi ka hui i nā māla kulina he 26 ma nā wahi ʻokoʻa like ʻole a me ke kumuhana.
Ua ʻike ʻia ka mea ʻike uila conductivity (ECa) ʻoi aku ka maikaʻi o ka loiloi ʻana i nā waiwai lepo i hoʻohālikelike ʻia me nā laʻana lepo i lawe ʻia. Hiki i kēia mau mea ʻike ke wānana i ke ʻano o ka lepo, ʻoi aku hoʻi ma nā hohonu like ʻole, a me ka wai i loaʻa. No ka mea ʻo ka wai ka pae conductive wale nō, hiki ke wānana ʻia nā ana o nā waiwai lepo e pili ana i ka loaʻa wai me ka ECa. ʻO nā ana e pili ana i ka wai lepo a me ka hua kulina, he ʻike waiwai ia no ka poʻe mahiʻai.
Ua hoʻāʻo pū ka hui i nā ʻenehana ʻē aʻe, akā ʻaʻole i paʻa nā hopena e like me ka ʻike conductivity sensor. ʻO ka pōmaikaʻi o ka hopu ʻana i ka ʻikepili ana me nā mea ʻike, ʻo ia ka hana wikiwiki ʻana, maʻamau e lawe i 1-2 mau hola no kēlā me kēia kanalima ʻeka. Ma ka ʻaoʻao ʻē aʻe, hiki i ka hoʻāʻo ʻana o ka lepo ke lawe i nā hebedoma a i kekahi manawa mau mahina, ma muli o nā waiwai lepo.
Ua wehewehe ʻo Kinoshita i mea e hoʻokele maikaʻi ai i nā mea kanu, he mea nui e hoʻomaka i ka nānā ʻana i nā papa hohonu o ka lepo, a hiki i ka sensor ECa ke kōkua nui i kēia ʻano.
Ua kākoʻo ʻia kēia haʻawina e Willard Agri-Service o Frederick, Inc. Kākoʻo ʻia e ka Joint Japan/World Bank Graduate Scholarship Program.
Eia kekahi, ke hui pū nei ʻo Obihiro University i loko he polokalamu hoʻololi ʻike agronomic virtual me ke Kulanui o Wisconsin-Madison. ʻO ka ʻāina ʻo Obihiro ma Iapana a me Wisconsin ma ʻAmelika Hui Pū ʻIa e ulu i nā mea kanu like: ʻuala a me ka soybeans. Hoʻopili ka papahana i nā ʻōnaehana meaʻai a me ka ʻepekema lepo.