Madzi ndi ofunika kwambiri pakupanga mbewu. Koma kwa zaka zambiri, asayansi kuphatikizapo Jonathan Proctor, Ph.D. Phys.org.
"Kafukufuku wowunika momwe zokolola zimayendera ndi kutentha ndi mvula zimawonetsa kuti kutentha kumafunika kwambiri kuposa madzi, zomera physiology timamvetsetsa kuti madzi ndi ofunikadi ku mbewu,” anatero Proctor, wophunzira womaliza maphunziro m’gulu la Peter Huibers pa Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS). "Kuthetsa vutoli n'kofunika kwambiri kuti tidziwe momwe kusintha kwanyengo kungakhudzire zokolola zapadziko lonse lapansi."
Gulu lofufuza linali ndi lingaliro: bwanji ngati zitsanzozo zinali kuyeza mtundu wolakwika wa madzi? M’malo moyezera mvula, monga momwe anachitira m’mafukufuku am’mbuyomu, gulu la Harvard linagwiritsa ntchito ma satellites kuyeza chinyontho cha dothi mozungulira madera a mizu.
Gululo linapeza kuti zitsanzo zomwe zimagwiritsa ntchito deta ya chinyezi m'nthaka zimalongosola 30% mpaka 120% kusiyana kwa zokolola za mbewu ndi mbewu pazaka zambiri kuposa zitsanzo zomwe zimadalira mvula.
"Mvula ndi chinyezi cha nthaka zimatha kusiyana kwambiri chifukwa cha nthunzi, kulowa mkati ndi kusefukira," adatero Proctor.
Pogwiritsa ntchito mawonedwe a satelayiti a chinyezi cha nthaka pamodzi ndi njira yowerengera, gululo linatha kusiyanitsa bwino ndi kumvetsetsa zotsatira za munthu aliyense kutentha ndi madzi pa mbewu, zomwe nthawi zambiri zimasokonezeka chifukwa kutentha ndi kuuma zimagwirizana kwambiri.
Makamaka, ofufuza apeza zimenezo kutentha kwambiri amawononga zochepa zokolola mbewu kuposa momwe zidanenedweratu, kuchepetsa kuwonongeka kwa kutentha komwe kukuyembekezeka. Koma asayansi anapezanso chidwi kwambiri pa chilala ndi kusefukira kwa madzi.
Zikafika pakulosera ntchito Ulimi M’nyengo yosintha, kulingalira kuyenera kuganiziridwa mmene kutentha ndi kupezeka kwa madzi kudzasinthira. Poyerekeza ndi kutentha, kusintha mkati kupezeka kwa madzi adzakhala kwambiri chigawo ndi nyengo, kotero njira zokonzekera zigawo ndipo utsogoleri umabwera patsogolo polimbana ndi kusintha kwa nyengo.