"to reach 46 C at the core the outer portion must be almost boiled" This sounds interesting, says my wife! > From: ezeizabotgard@hotmail.com > To: pbs@lists.ibiblio.org > Date: Thu, 9 May 2013 00:22:05 +0000 > Subject: Re: [pbs] Heat treatment for mosaic virus > > Well, the standard procedure involves using hot water and the temperature to be reached to be effective is 46 C at the bulb core for one hour. It gave good results but the bulbs were pretty battered by the treatment and took long to recover. The reason is evident: to reach 46 C at the core the outer portion must be almost boiled. wiki