Ny loza ateraky ny afo dia tsy maintsy ambenana amin’ny fiainana andavanandro, ary lasa safidin’ny olona maro koa ny varavarana afo. Ny varavaran’ny afo vy vita amin’ny fampifangaroana ny vy avo lenta sy ny fitaovana refractory dia tsy vitan’ny hoe mahafeno ny fepetra fiarovana, fa koa miantoka fa ny mpampiasa dia afaka mampiasa azy io mandritra ny fotoana maharitra tsy misy fahasimbana.

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