Akatswiri azamalimi ndi asayansi a nthaka amakonzekeretsa alimi njira zabwino zowathandizira kupanga zisankho zanzeru pakusamalira minda ndi mbewu zawo. Rintaro Kinoshita ndi gulu la ofufuza atsimikiza kuti chida monga "Apparent Electrical Conductivity (ECa) Sensor" chingapereke chidziwitso chofunikira pa minda yaulimi, malipoti. tsamba lovomerezeka la American Society of Agronomy.
Kinoshita ndi pulofesa wothandizira ku Obihiro University of Agriculture and Veterinary Medicine, Japan, koma anachita kafukufukuyu ali pa yunivesite ya Cornell, USA.
Kafukufuku inasindikizidwa mu Agronomy Journal, chofalitsidwa cha American Society of Agronomy.
Inde, nthaka ndi makhalidwe ake ndi zina mwa zinthu zofunika kwambiri pa ulimi. Kusiyanasiyana kwa malo pa zokolola kumadalira kwambiri zinthu zitatu: malo, nthaka, ndi tizirombo/matenda.
Alimi nthawi zambiri amadalira kuyesa nthaka kuti amvetsetse momwe nthaka ilili, koma zimatenga nthawi komanso zimakhala zodula. Kinoshita ndi gululo adagwiritsa ntchito luso la sensa lomwe limawalola kusonkhanitsa zambiri za mbewu ndi nthaka popanda kukumba nthaka. Masensa awa amatha kunyamulidwa ndi zida zaulimi monga mathirakitala ndikupereka chidziwitso chofunikira. Kuti athe kuwongolera chidziwitsocho, ofufuzawo adafanizira zomwe zidachokera ku masensa awo ndi zotsatira za kusanthula kwa zitsanzo za nthaka.
Kafukufukuyu adachitika kumadera a Maryland ndi Delaware (zigawo za Coastal Lowland ndi Piedmont Plateau). Gululi lidafufuza minda ya chimanga 26 m'magawo awiri osiyana siyana a malo ndi madera.
Sensa yowoneka bwino yamagetsi (ECa) yatsimikizira kukhala yopambana kwambiri pakuwunika zomwe zili munthaka poyerekeza ndi zitsanzo za nthaka zomwe zatengedwa. Masensa amenewa adatha kuneneratu momwe nthaka ilili, makamaka kuya kosiyana, ndi madzi omwe alipo. Popeza madzi ndi gawo lokhalo lothandizira, kuyeza kwa nthaka komwe kumakhudza kupezeka kwa madzi kungathe kuneneratu pogwiritsa ntchito ECa. Miyezo yokhudzana ndi chinyezi cha nthaka ndi zokolola za chimanga, zomwe ndizofunikira kwa alimi.
Gululo linayesanso matekinoloje ena, koma zotsatira zake sizinali zomveka ngati chowoneka bwino cha conductivity. Ubwino wojambula deta yoyezera ndi masensa ndikuti zimachitika mwachangu, nthawi zambiri zimatenga maola 1-2 pa maekala makumi asanu aliwonse. Komano, kuyezetsa pakati pa nthaka kumatha kutenga masabata kapena miyezi, kutengera momwe nthaka ilili.
Kinoshita akufotokoza kuti pofuna kusamalira bwino mbewu, ndikofunika kuyamba kumvetsera kwambiri zigawo zakuya za nthaka, ndipo sensa ya ECa ingakhale yothandiza kwambiri pankhaniyi.
Kafukufukuyu adathandizidwa ndi Willard Agri-Service wa Frederick, Inc. mothandizidwa ndi Joint Japan / World Bank Graduate Scholarship Program.
Kuphatikiza apo, Yunivesite ya Obihiro ikugwira ntchito mkati pulogalamu yosinthira chidziwitso cha agronomic ndi University of Wisconsin-Madison. Dera la Obihiro ku Japan ndi Wisconsin ku United States amalima mbewu zofanana: mbatata ndi soya. Pulogalamuyi imayang'ana kwambiri pazakudya komanso sayansi ya nthaka.