06:00Byd Amaeth23/07/2016BBC Radio Cymru Duration: 35 o funudau Sat 23rd Jul 2016, 06:00 on BBC Radio CymruY diweddaraf o'r byd ffermio gyda Dei Tomos. The latest farming news with Dei Tomos.GenresFactualScience & NatureBrandByd Amaeth Source: BBC Online