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Weeds pose a major challenge to the sustainability of agricultural production systems, causing significant crop yield, economic and environmental losses. Chemical weed control tactics play a major role in modern weed management, maintaining the productivity of diverse cropping systems, reducing yield losses and facilitating conservation agriculture. However, the over-reliance on chemical weed control has led to shifts in weed communities in agroecosystems which are now becoming dominated by high competitors and herbicide resistance. Thus, weed scientists and practitioners are urged to develop and incorporate innovative and feasible integrated weed management (IWM) systems that can reduce weed infestations and environmental impacts.
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A facsimile reprint of the Second Edition (1994) of this genealogical guide to 25,000 descendants of William Burgess of Richmond (later King George) County, Virginia, and his only known son, Edward Burgess of Stafford (later King George) County, Virginia. Complete with illustrations, photos, comprehensive given and surname indexes, and historical introduction.
Rethinks the criteria governing agency and receptivity, health and toxicity, productivity and stillness
Collects for the first time major lesbian plays from controversial cultural perspectives spanning more than a generation of work in varied theatrical styles representing an amazing gamut of lesbian politics from all over America. Includes: The Quintessential Image (Jane Chambers) * The Postcard (Gloria Joyce Dickler) * A Lady and a Woman (Shirlene Holmes) * Nasty Rumors and Final Remarks (Susan Miller) * Desdemona (Paula Vogel) * and more!
We are currently facing the sixth mass extinction of species in the history of life on Earth, biologists claim—the first one caused by humans. Heise argues that understanding these stories and symbols is indispensable for any effective advocacy on behalf of endangered species. More than that, she shows how biodiversity conservation, even and especially in its scientific and legal dimensions, is shaped by cultural assumptions about what is valuable in nature and what is not.