Effect of herbicides on competitive saprophytic colonization by Macrophomina phaseolina of soybean stems
TLDR
The nonpersistence of M. phaseolina in stems in soil suggests that the saprophytic activity of the fungus does not effectively increase its inoculum density in soil.Abstract:
The effect of paraquat, glyphosate and sodium chlorate : sodium borate (50:50), applied at commercial rates was tested on the competitive saprophytic colonization by Macrophomina phaseolina of greenhouse and field grown soybean stems at three different growth stages in two soils. A significant difference in colonization was recorded between herbicide treatments and controls in soil with a high organic content but no significant difference in colonization was found between herbicides. The highest levels of stem colonization occurred 10 days after incubation in soil. Colonization in treated and untreated stems progressively declined at similar rates for all growth stages and in both soil types. In both soils, field stems had greater levels of colonization when sampling time and herbicide factors were excluded. The nonpersistence of M. phaseolina in stems in soil suggests that the saprophytic activity of the fungus does not effectively increase its inoculum density in soil.read more
Citations
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Journal ArticleDOI
Biology, Epidemiology and Management of the Pathogenic Fungus Macrophomina phaseolina (Tassi) Goid with Special Reference to Charcoal Rot of Soybean (Glycine max (L.) Merrill)
TL;DR: The fungus Macrophomina phaseolina is a causative agent of diseases in more than 500 plant species and can be managed to some extent by cultural practices, organic amendments, seed treatment and genetic host resistance.
Journal ArticleDOI
Effects of Soil Moisture and Temperature on the Saprophytic Ability of Trichoderma Harzianum
TL;DR: Esti?
Journal ArticleDOI
Advancing Our Understanding of Charcoal Rot in Soybeans
Martha P. Romero Luna,Daren S. Mueller,Alemu Mengistu,Asheesh K. Singh,Glen L. Hartman,Kiersten A. Wise +5 more
TL;DR: Research conducted over the past 10 yr has improved the understanding of the environment conducive to disease development, host resistance, and improved disease diagnosis and management.
Book ChapterDOI
Soybean disease management
Glenn Bowers,John Russin +1 more
TL;DR: White mold (also called Sclerotinia stem rot) is a significant soybean disease in the northern United States and Canada and can greatly reduce yield, especially when climate and management practices favor high yield potential.
Journal ArticleDOI
Effects of grain sorghum (Sorghum bicolor) herbicides on charcoal rot fungus
TL;DR: Grain sorghum growth was reduced by atrazine at all intervals and by alachlor and metolachlor at harvest, despite use of seed safened with cyometrinil.
References
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Journal ArticleDOI
Effect of herbicides on plant diseases
and J Altman,C L Campbell +1 more
TL;DR: If the authors understand factors influencing the persistence and decomposition of pesticides in the soil and the overall effects on soil microorgan isms, pesticides can be used wisely and need not render soils infertile, plants inedible, or reduce yields, as a result of excessive accumulation of toxic residues or detrimental side effects.
Book ChapterDOI
Interactions between herbicides and plant pathogens
Jaacov Katan,Y. Eshel +1 more
TL;DR: The increasing use of herbicides for the control of undesired vegetation has in recent years had a tremendous impact on crop production as well as on nonagricultural land and far less emphasis has been placed on the indirect effects of herbicide than on the direct ones, probably due to the complexity of the problem.
Journal ArticleDOI
Effects of herbicides on the growth of soil fungi
Valerie Wilkinson,R. L. Lucas +1 more
TL;DR: All three methods used to investigate the effects of a number of commercial herbicides on the growth of certain soil fungi have shown consistent differences between fungi in their ability to tolerate paraquat.