Kuderedza huwandu hwefetereza panguva yekushandiswa kukuru kwaive kwakanakira mari muminda yembatatisi gore rapfuura. Izvi zvinoratidzwa nechirongwa chekuratidzira cheBelgian research Institute Inagro.
Inagro yakatanga kuyedza fetereza muna Kubvumbi 2020, ichitarisa kugovanisa uye mumutsara fetiraiza. Kuedza kwakatangwa muna Kubvumbi 25 pazvirongwa nemhando yeFontane.
Mushure mekuongorora kwekutanga kwevhu, zvakaonekwa kuti pakanga pachine nitrogen shoma muprofile, izvo zvaireva kuti huwandu hwakakurudzirwa hwenitrogen hwakanga hwakakwira: 229 kg yenitrogen pahekita. Miti yakasiyana-siyana yakawana 70 muzana chete yefetireza yakakurudzirwa, kungave mumunda kana kuti munhevedzano.
Mumwaka wekukura, musiyano pakati penzira mbiri dzekuberekesa wainyatsooneka. Izvi zvakakanganisawo mari.
Miti isina kuomeswa ndiyo yaive negoho rakaderera. Kuzadza fetiraiza pasina kuiswa mashizha muna Chikumi/Chikunguru kwakakonzerawo goho rakaderera, paine kurudziro ye100% yenitrogen ichiburitsa zvibereko zviri nani pane 70%.
Zvirimwa zvakaiswa fetireza mumunda nefoliar fertilization zvaive negoho guru. Musiyano wegoho pakati pefotereza yemumutsara pa70% yezvakajairwa kana 70% yezvakajairwa yakawedzerwa nefoliar kuiswa mumwaka wekukura waisanyanya kukosha.
Vatsvakurudzi vanogona kutaura kuti pakaiswa fetereza huru mumutsara, magranules efetereza akagovaniswa zvakaenzana. Nitrogen yakabva yangove mumidzi. Mushure mekuisa fetereza mumunda wese, kune nitrogen yakawandisa muchikamu chepamusoro chevhu. Nekuda kwekushaikwa kwekunaya kwemvura yakakwana, iyi nitrogen yaisakwanisa kuenda kumidzi.
Nezvemari, chirongwa chine huwandu hwakadzikiswa hwefotereza yekutanga mumutsara yakaita zvirinani muna 2020. "Tikaverenga mutengo we1 euro pakg yenitrogen uye mutengo wekutengesa we80 euros patani yembatatisi, tinowana imwezve ye400 euros ye70% in-row fertilization kana ichienzaniswa nezana muzana rezano rekuita feteraiza." vakagumisa vatsvakurudzi.