(SeeNews) - Apr 2, 2012 - Brazilian grain and biodiesel producer Vanguarda Agro (SAO:VAGR3) announced on Friday that its net loss in the biodiesel segment widened to BRL 124.7 million (USD 68.7m/EUR 51.5m) in the fourth quarter of 2011, from BRL 43.9 million in the same period of 2010.