Date of Award


Document Type

Honors Thesis



First Advisor

Robert Zdor


Mustard seed meal (MSM) has been studied as a biofumigant in suppressing weed growth in an organic-friendly way. Previous studies have shown that MSM in the presence of elevated sand content was highly effective in suppressing the germination of velvetleaf seeds, and that as clay/silt in sand content increased, MSM effectiveness decreased in suppressing seed germination. Based on these results, it was postulated that clay may have effects on MSM by inhibiting this biofumigant from suppressing weed growth. Two different types of pure clay--kaolin and montmorillonite--were selected with their increasing concentrations. Low concentrations of clay do not seem to influence reducing MSM effectiveness.

Subject Area

Weeds--Biological control; Clay soils; Mustard seed meal