Download or read book Common Pokeweed Phytolacca Americana L Management in Pennsylvania Field Crops written by Kelly Patches and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Common pokeweed (Phytolacca americana L.) is a perennial broadleaf weed with a large persistent taproot that is also capable of abundant seed production. It has become a frequent problem in agronomic crops in Pennsylvania. Traditionally, plowing was used to manage pokeweed; however, the wide-spread adoption of conservation tillage, a decline in the use of soil residual herbicides, and a decrease in diverse cropping rotations may have allowed pokeweed populations to increase in recent years. This research was conducted in order to identify opportunities to better manage pokeweed in corn, soybean, and other Northeast U.S. cropping rotations and shows that an integrated approach which includes both cultural and chemical tactics enables successful management of pokeweed in conservation tillage systems.Experiments were conducted in order to investigate the biology of common pokeweed in order to better time control tactics. In a pokeweed seedling emergence timing experiment, seedlings emerged throughout the summer, but peak emergence occurred in mid to late May. By August, pokeweed seedling emergence ceased. Both above- and below-ground pokeweed biomass decreased with delayed emergence and plants which emerged in late July did not produce mature berries by the end of the season. Experiments were also conducted to assess herbicide efficacy on pokeweed control. In corn, glyphosate, plant growth regulators, and other herbicides provided at least 80% control in trials conducted over a 3-year period. In soybean, glyphosate provided the best control of pokeweed; all treatments including glyphosate provided at least 80% control, while non-glyphosate treatments provided less than 62% control. Other glyphosate experiments examined herbicide rate, nozzle selection, carrier volume, and application timing. Air induction and flat fan nozzles provided the same level of control and in one of two years, 93 L/ha carrier provided better control than greater carrier volumes. The highest rates of 1.27 and 1.73 kg ae/ha provided the best control 12 weeks after application (WAA), but at 44 WAA, there was no difference in control due to glyphosate rate. Glyphosate application after mid-June provided better control than earlier in the summer. Even though pokeweed is a challenging weed to control, the results from this research show that there are options for controlling pokeweed in Pennsylvania field crops. Understanding the emergence pattern and current herbicide options has provided insight on how to better time control tactics and reduce this problematic weed. In order to control pokeweed, an integrated approach must be taken. Crop rotation and selection and timing of herbicide application are important for effective control.

Download or read book Glyphosate Resistance in Crops and Weeds written by Vijay K. Nandula and published by John Wiley & Sons. This book was released on 2010-12-28 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: New technologies are becoming available for managing glyphosate resistant (GR) weeds and reducing their spread. GR crop technology has revolutionized crop production in the developed world and the benefits are gradually spilling over to the developing world. In order to sustain an effective, environmentally safe herbicide such as glyphosate and the GR crop technology well in to the future, it is imperative that the issue of GR weeds be comprehensively understood. This book provides such an essential, up-to-date source of information on glyphosate resistance for researchers, extension workers, land managers, government personnel, and other decision makers. Provides comprehensive coverage of the intensely studied topic of glyphosate resistant (GR) in crops Details the development of glyphosate resistance and how to detect and manage the problem in crops Helps standardize global approaches to glyphosate resistance Encompasses interdisciplinary approaches in chemistry, weed science, biochemistry, plant physiology, plant biotechnology, genetics, ecology Includes a chapter on economic analysis of GR impact on crops

Download or read book Journal of Environmental Horticulture written by and published by . This book was released on 1995 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Southern Weed Science Society written by Southern Weed Science Society (U.S.) and published by . This book was released on 2000 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Annual Meeting of the Northeastern Weed Science Society written by Northeastern Weed Science Society and published by . This book was released on 2007 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crop Protection Reference written by and published by . This book was released on 2003 with total page 2804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pokeweed Phytolacca Americana written by Arnold Krochmal and published by . This book was released on 1970 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2Pokeweed, a plant abundant in Appalachia, exhibits some chemical similarities to a related species that has shown molluscicidal properties. Because this suggests that pokeweed, Phytolacca americana L. (P. decandra L.), has potential for controlling fresh-water snails, we have compiled this report of its chemical composition, uses, propagation methods, and other potentially useful species of the genus Phytolacca. The related species, Phytolacca dodencandra L'Her, was found to be the source of a molluscicide, which could pIay an important role in control of bilharziasis, a parasitic disease of humans widespread in Puerto Rico, Africa, and other tropical areas (22). Dead snails and small fish were observed in waterways in areas of Ethiopia where people washed their clothes with this Phytolacca's fruit, which is rich in saponins. Some distance downstream and immediately upstream from the washing places, abundant live snails were present, suggesting that the fruit contained a toxin acting as a molluscicide. This was subsequently confirmed by laboratory tests; tap-water extracts of the dried and powdered fruit had an LC100 (lethal concentration) of 10 parts per million against snails (Biomphalaria, Bulinus: and Lymnea spp.) after 24-hour exposure at 23OC. Furthermore, it was shown that molluscicidal potency was not affected by the presence of soil or vegetable matter, an important factor when the molluscicide is used under natural conditions. S3.

Download or read book Weed Science written by and published by . This book was released on 1981 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weeds of Kentucky and Adjacent States A Field Guide written by Patricia Dalton Haragan and published by University Press of Kentucky. This book was released on with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: " Among the darkest corners of KentuckyÕs past are the grisly feuds that tore apart the hills of Eastern Kentucky from the late nineteenth century until well into the twentieth. Now, from the tangled threads of conflicting testimony, John Ed Pearce, KentuckyÕs best known journalist, weaves engrossing accounts of six of the most notorior accounts to uncover what really happened and why. His story of those days of darkness brings to light new evidence, questions commonly held beliefs about the feuds, and us and long-running feudsÑthose in Breathitt, Clay Harlan, Perry, Pike, and Rowan counties. What caused the feuds that left Kentucky with its lingering reputation for violence? Who were the feudists, and what forcesÑsocial, political, financialÑhurled them at each other? Did Big Jim Howard really kill Governor William Goebel? Did Joe Eversole die trying to protect small mountain landowners from ruthless Eastern mineral exploiters? Did the Hatfield-McCoy fight start over a hog? For years, Pearce has interviewed descendants of feuding families and examined skimpy court records and often fictional newspapeputs to rest some of the more popular legends.

Download or read book WSSA Abstracts written by Weed Science Society of America and published by . This book was released on 1993 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Report of the Agricultural Research Institute of Ontario written by Agricultural Research Institute of Ontario and published by . This book was released on 1983 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1977 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Guide to Successful Wildlife Food Plots written by University of Tennessee Extension and published by . This book was released on 2008-08-01 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrindex written by and published by . This book was released on 1994 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ginseng and Other Medicinal Plants written by Arthur Robert Harding and published by . This book was released on 1908 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weeds of the Farm and Garden written by Louis Hermann Pammel and published by . This book was released on 1912 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weeds Used in Medicine written by Alice Henkel and published by The Minerva Group, Inc.. This book was released on 2003-06 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: CONTENTS:Collection and Curing of Roots, Barks, Leaves and Herbs, Flowers and SeedsDisposal of the DrugsDescriptions of PlantsBurdockDandelionDocksCouch GrassPokeweedFoxgloveMulleinLobeliaTansyGum PlantScaly GrindeliaBonesetCatnipHoarhoundBlessed thistleYarrowCanada FleabaneJimsom WeedPurple Thorn-ApplePoison HemlockAmerican WormseedMustard