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Full-Text Articles in Life Sciences
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
IGC Proceedings (1997-2023)
Alfalfa autotoxicity causes yield reductions in alfalfa production by inhibiting plant establishment and decreasing plant productivity. Accurate predictions regarding autotoxic potential of the soil in a given field at a given time are an essential tool for alfalfa growers to make appropriate planting decisions. To address this issue, we are developing a soil bioassay that can be conducted as a mail-in soil test for alfalfa growers through plant diagnostic service laboratories. We hypothesize that we will detect differences in seed germination, emergence, root length, and root morphology between control and autotoxic soils. A preliminary trial testing alfalfa field soils and …
Density And Germination Characteristics Of Seeds Of Bromus Tectorum In Field Seedbanks, J. A. Young, Charlie D. Clements
Density And Germination Characteristics Of Seeds Of Bromus Tectorum In Field Seedbanks, J. A. Young, Charlie D. Clements
IGC Proceedings (1997-2023)
Bromus tectorum is a highly invasive exotic weed that has spread over millions of hectares of grazing land in the semi-arid regions of far western North America. The annual grass is an important grazing resource, but herbage production is highly variable among years, depending on the amount and periodicity of precipitation. When production is abundant, the accumulations of fine-textured, early-maturing herbage increase the chance of ignition and the rate of spread of wildfires. On certain years the area burned in such fires may be several million hectares. Such fires destroy forage resources and degrade watershed quality on extensive areas as …
A Strategy For Detecting Natural Anthelmintic Constituents Of The Grassland Species Plantago Lanceolata, D. L. Gustine, M. A. Sanderson, J. Getzie, S. Donner, R. Gueldner, N. Jennings
A Strategy For Detecting Natural Anthelmintic Constituents Of The Grassland Species Plantago Lanceolata, D. L. Gustine, M. A. Sanderson, J. Getzie, S. Donner, R. Gueldner, N. Jennings
IGC Proceedings (1997-2023)
A strategy to detect anthelmintic constituents in plantain (Plantago lanceolata) using a bioassay-driven purification approach was tested. Plantain consumed by cattle may control or reduce internal parasite titers, possibly due to the iridoid glucoside aucubin. Lyophilized, ground leaves of wild P. lanceolata were extracted with 95 % ethanol or boiling water containing calcium carbonate. Partially purified extracts (0 to 250 mg ml-1), 5 μg ml-1 of the anthelmintic levamisole, or 5 mg ml-1 of aucubin were tested with sheathed bovine parasites (Ostertagia ostertagi). The percent moving worms was unchanged for water controls …
Nutrient Hotspots From Patch Burning In A Namibian Rangeland, I. Zimmermann, L. Tjilumbu, G. Diekmann
Nutrient Hotspots From Patch Burning In A Namibian Rangeland, I. Zimmermann, L. Tjilumbu, G. Diekmann
IGC Proceedings (1997-2023)
No abstract provided.