Research Papers: Influence of Soil Pesticides on Vesicular-Arbuscular Mycrrhizae Citrus Soil
Authors
J. H. O'Bannon
S. Nemec
Keywords:
EDB, DD, Telone, Fumigants, Nontarget Effects
Abstract
Four fumigants were applied to soils amended with either Glomus mosseae or G. fasciculatus to determine their effect on these vesicular-arbuscular mycorrhizae (VAM) and subsequent development of citrus seedlings. Fumigation with methyl bromide or chloropicrin effectively controlled VAM at rates of 242 kg/ha, or 163 liters/ha, respectively. Seedling growth was reduced in fumigated soils because of lack of VAM compared to nonfumigated VAM-infected seedlings. In soils treated with a low rate of either 1,3-dichloropropene (168 liters/ha) or ethylene dibromide (141 and 235 liters/ha), VAM were not eliminated and seedling growth was stimulated.
