Natural products such as mustard seed are being evaluated as biofumigants. Recent studies found that Mustard seed meal amendment can suppress root infection by Rhizoctonia solani (Mazzola, 2006). We have been testing mustard seed meal (BioFence, Green Envy) in strawberry at rates of 500 to 4000 lb/A incorporated into the soil. Mustard meal alone does not consistently produce high fruit yields or control weeds (Samtani et al. 2011). One possible method to enhance solarization, is to use combinations of mustard meal, chloropicrin and metam sodium treatments (Chellemi & Mirusso 2006, Xue et al. 2000, Ploeg & Stapleton 2001, Eshel et al. 2000). By heating the soil with solarization or steam, the pest control activity of metam sodium, chloropicrin, or mustard meal may be higher than at ambient soil temperatures.