Mu myaka mirongo itanu ishize, umusaruro wa soya wiyongereye cyane. Yiyongereye inshuro zirenga 13, igera kuri toni miliyoni 350 buri mwaka. Kugira ngo tubyerekane neza, inomero ihwanye n'uburemere bungana na miriyoni 2,3 z'ubururu, inyamaswa nini ku isi.
Iri zamuka rikabije ry'umusaruro wa soya ryerekana akamaro kayo mu buhinzi ku isi n'uruhare rwaryo mu kugaburira abaturage baguka vuba. Ubwiyongere buterwa nimpamvu nyinshi, zirimo kwiyongera kw'isoko rya poroteyine zishingiye ku bimera no gukoresha soya mu biryo by'amatungo.
Soya ni mbi kubidukikije?
Burezili, ibamo bimwe mu bidukikije bikomeye kandi byangiza ibidukikije, byahuye n’amashyamba akomeye mu myaka mike ishize. Ishyamba ryimvura rya Amazone, igishanga cya Pantanal, na savannah ya Cerrado byose byagize igihombo kinini cyo gutura aho batuye. By'umwihariko, ibice birenga 20% bya Amazone byarasenyutse, 25% bya Pantanal byarazimiye, naho 50% bya Cerrado birahanagurwa. Iri shyamba rikabije ry’amashyamba rifite ingaruka zikomeye, harimo n’uko kuba Amazone ubu isohora dioxyde de carbone kuruta uko iyikuramo, bikabije imihindagurikire y’ikirere ku isi.
Nubwo umusaruro wa soya ukunze guhuzwa nibidukikije, ni ngombwa kumva uruhare rwayo murwego rwagutse rwo gutema amashyamba. Soya ikunze guhuzwa no kwangiza ibidukikije bitewe no kuyikoresha mu kugaburira amatungo, ariko ntabwo ari yo nyirabayazana yonyine. Umushoferi wambere wamashyamba muri Berezile nukwagura urwuri rwinka zororerwa inyama.
Soya ihingwa ku bwinshi, kandi igice kinini cyiki gihingwa gikoreshwa nkibiryo byamatungo. Iyi mikoreshereze ya soya rwose ifitanye isano no gutema amashyamba mu turere tumwe na tumwe, kubera ko amashyamba yatunganijwe kugira ngo ahinge imirima ya soya. Nyamara, iki nikimwe mubibazo bigoye birimo ibintu byinshi:
Soya yo kugaburira amatungo: Gukenera soya nkibiryo byamatungo bigira uruhare mu gutema amashyamba mu buryo butaziguye mu gushyigikira inganda z’ubworozi. Mugihe ubutaka bwinshi bwasibwe guhinga soya, kwiyongera kwibiryo bifasha kwagura umusaruro winyama, ari nako bitera amashyamba kurushaho.