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University of Nebraska - Lincoln

Department of Agronomy and Horticulture: Faculty Publications

2011

Competition

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Biological Suppression Of Velvetleaf (Abutilon Theophrasti ) In An Eastern Nebraska Soil, Jane Okalebo, Gary Y. Yuen, Rhae A. Drijber, Erin E. Blankenship, Cafer Eken, John L. Lindquist Jan 2011

Biological Suppression Of Velvetleaf (Abutilon Theophrasti ) In An Eastern Nebraska Soil, Jane Okalebo, Gary Y. Yuen, Rhae A. Drijber, Erin E. Blankenship, Cafer Eken, John L. Lindquist

Department of Agronomy and Horticulture: Faculty Publications

Weed-suppressive soils contain naturally occurring microorganisms that suppress a weed by inhibiting its growth, development, and reproductive potential. Increased knowledge of microbe–weed interactions in such soils could lead to the identification of management practices that create or enhance soil suppressiveness to weeds. Velvetleaf death and growth suppression was observed in a research field (fieldA) that was planted with high populations of velvetleaf, which may have developed via microbial mediated plant–soil feedback. Greenhouse studies were conducted with soil collected from fieldA (soilA) to determine if it was biologically suppressive to velvetleaf. In one study, mortality of velvetleaf …


Corn And Velvetleaf (Abutilon Theophrasti ) Transpiration In Response To Drying Soil, Jared Schmidt, Erin E. Blankenship, John L. Lindquist Jan 2011

Corn And Velvetleaf (Abutilon Theophrasti ) Transpiration In Response To Drying Soil, Jared Schmidt, Erin E. Blankenship, John L. Lindquist

Department of Agronomy and Horticulture: Faculty Publications

Soil water availability is the most important factor limiting crop yield worldwide. Understanding crop and weed transpiration in response to water supply may provide valuable insight into the mechanisms of crop yield loss in water limited environments. A greenhouse experiment was conducted to quantify corn and velvetleaf transpiration in response to drying soil. Five plants of each species were well watered by adding back the equivalent water loss each day to reach field capacity, and five plants were subjected to drought stress (dry-down) by not replacing lost water. Normalized daily transpiration of dry-down plants was regressed on soil water content …