Weed Science Commons^™

Moss: Flora Of Maine, Robert N. Miller

Maine Collection

Moss: Flora of Maine

by Robert N. Miller

Gorham State Teachers College, Gorham, Maine, 1951.

Contents: What Are Mosses? / Moss Groups / Suggestions for Collecting, Mounting and Preservation of Moss Specimens / Over-All Pictures of the Capsules and Setae / Types of Leaves / Glossary / Outline Key to Some Maine Mosses

The Cost Of Convenience: The Impact Of Weeds On Crop Yields, Robert Hartzler

Integrated Crop Management Conference

Populations of weeds capable of affecting crop yields are present in every field during every year. Perhaps it is the ubiquitous nature of weeds that leads to the complacency in their management across Iowa and the Midwest. A survey of Wisconsin corn and soybean fields found that weeds were managed in a way that resulted in yield losses in more than 10% of surveyed fields, with an average yield loss of slightly less than 10%.

Common Seasonal Pests : Your Handy Guide To Prevent The Spread Of Animal And Plant Pests, Diseases And Weeds., Department Of Agriculture And Food, Wa

Bulletins 4000 -

This bulletin provides information on quarantine, common pests and common household pests in Western Australia. Details include identification, damage caused, seasonal occurance of pest, action to take, control measures, and where to seek advice.

Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume I: Common Names, Elaine Nowick

Zea E-Books Collection

Containing thousands of entries of both vernacular and scientific names of Great Plains plants, the literature that informs this exhaustive listing spans nearly 300 years. Author Elaine Nowick has drawn from sources as diverse as Linnaeus, Lewis and Clark, and local university extension publications to compile the gamut of practical, and often fanciful, common plant names used over the years. Each common name is accompanied by a definitive scientific name with references and authority information. Interspersed with scientifically-correct botanical line drawings, the entries are written in standard ICBN format, making this a useful volume for scholars as well as lay ...

Island Invasion: The Silent Crisis In Hawaii, Sophia Janssen

Pomona Senior Theses

Keeping out invasive species may, upon first review, seem like a trivial environmental cry from ecologists and deep environmentalists; a belated wish to return to an undeveloped world where nature was pristine. However invasive species create problems that impact all of us and can have far more severe consequences than changing a stunning landscape. These problems are heightened in islands like Hawaii, where the fragile ecosystems have developed over centuries of evolution and adaptation. The introduction of a disease-carrying mosquito can put the people of Hawaii at risk to many vector-born illnesses and create an epidemic, taking human life. The ...

Organic Wheat : A Production Guide, Steven Mccoy

Bulletins 4000 -

Many people believe that organic agriculture systems can only work in high rainfall regions. However, some of Australia’s most successful organic farmers are the experienced organic wheatbelt growers who produce cereal, pulse and oilseed crops in different regions and soil types across the country.

Wheat is the major organic cereal crop grown in Australia - predominantly noodle and breadmaking wheats for export markets.

Farming systems developed by modern organic wheat growers can differ significantly in concept, strategies and techniques from those used by conventional growers. Successful conversion to organic requires careful planning and integration of the whole farming system over ...

Cogongrass (Imperata Cylindrica (L.) Beauv.) In Louisiana: Cause And Consequence, Lorissa A. Radunzel-Davis

LSU Master's Theses

Cogongrass (Imperata cylindrica (L.) Beauv.), an invasive species from East Asia, is found worldwide and is problematic in several countries. In the United States, it grows primarily in the Southeast, reducing biodiversity by growing in dense patches and potentially causing mortality and reducing value of native and planted pinelands due to a high burning temperature. Using Lee Memorial Forest, a Louisiana State University AgCenter property in Washington Parish as a study site, this thesis explores cogongrass in Louisiana with emphasis on soil microbes and soil legacy effects on native plant species. Cogongrass populations at Lee Memorial Forest were more likely ...

Salvinia Molesta: An Assessment Of The Effects And Methods Of Eradication, Arti Lal

Master's Projects and Capstones

Salvinia molesta is an invasive aquatic fern. It is now the second worse aquatic invader in the world. Since the 1930s, it has invaded most tropical and some temperate countries. S. molesta plants grow vegetatively and can increase in size rapidly. S. molesta can form thick mats of up to 1-meter-thick. There are a number of ways these thick mats negatively affect the environment: 1) reduce light to benthic organisms, 2) reduce oxygen in the water column for other organisms, 3) accumulate as organic matter at the bottom of the water column, 4) decrease nutrients for other organisms, and 5 ...

Blue Mustard Control, Drew J. Lyon, Robert N. Klein, Robert G. Wilson

Historical Materials from University of Nebraska-Lincoln Extension

Blue mustard is a troublesome weed in winter wheat and alfalfa in central and western Nebraska. This NebGuide discusses methods of control.

Blue mustard [Chorispora tenella (Pallas) D.C.] was introduced into the United States from Siberia in 1929 and was first reported in Lewiston, Idaho. It was identified in Keith County, Nebraska in 1953. Blue mustard is a winter annual weed, with seed germinating in late summer and fall. The plant overwinters as a rosette. The flower stalk usually elongates, a process known as bolting, in March. With mild February weather, bolting may occur in early March. Cold weather ...

Weed Seed Dormancy And Germination

Proceedings of the Integrated Crop Management Conference

Weeds are consistent problems in agriculture because of seed dormancy. Without dormancy, weed seeds would not survive in the soil for any period of time. Also critical are the factors that influence dormancy. These factors which describe seed dormancy also serve to "determine" when the seed has the greatest potential to germinate successfully, and thus survive to replace the seed bank. Understanding the concepts of seed dormancy and factors that influence the continuation or termination of dormancy thus allowing germination are critical for the development of an effective weed-management program.