Katrina Manson, East Africa correspondent, reports on the work of the One Acre Fund in Kenya which aims to help Africa's poorest farmers improve crop yield and earnings. <br /><br />Related articles:<br />http://www.ft.com/cms/s/0/8d40ac6c-ec53-11e1-a91c-00144feab49a.html<br />http://www.ft.com/cms/s/0/662506c6-e642-11e1-bece-00144feab49a.html<br /><br />For more video content from the Financial Times visit: http://www.ft.com/video<br /><br />http://www.FT.com/