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Plant Sciences

1999

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Vegetation Trend In The Fitzroy Region. An Analysis Of 1995 And 1998 Ground Monitoring Data., Noelene Duckett, Paul Novelly, Ian Watson, National Landcare Program (Australia), Csiro Nov 1999

Vegetation Trend In The Fitzroy Region. An Analysis Of 1995 And 1998 Ground Monitoring Data., Noelene Duckett, Paul Novelly, Ian Watson, National Landcare Program (Australia), Csiro

Research Reports

This document summarises the analyses carried out on the ground monitoring data from the Kimberley region of Western Australia as part of the Natural Heritage Trust project 953024 - ‘'Development of Information Products for Reporting Rangeland Changes.”

This project has been investigating ways of integrating rangeland trend information collated from Landsat satellite data and site-specific ground vegetation data. This has been carried out by extending and refining previous approaches developed by Agriculture Western Australia and CSIRO Mathematical and Information Sciences (e.g. Wallace et al. 1994). The principal objective of the project is to develop useful information products which …


Post–Green Revolution Trends In Yield Potential Of Temperate Maize In The North-Central United States, D. N. Duvick, Kenneth G. Cassman Nov 1999

Post–Green Revolution Trends In Yield Potential Of Temperate Maize In The North-Central United States, D. N. Duvick, Kenneth G. Cassman

Department of Agronomy and Horticulture: Faculty Publications

This paper addresses the question of whether there has been an increase in yield potential of maize (Zea mays L.) hybrids released in the north-central United States since the advent of the “Green Revolution” that began in the late 1960s. Because there are few published data about hybrid growth rates and yield-determining plant traits when grown at yield potential levels, we attempt to address this issue indirectly by evaluation of maize breeding efforts, changes in plant traits of commercial hybrids, and by comparison of statewide average yield trends and yield trends in sanctioned yield contests. On the basis of …


The Correlation Of Profiles Of Surface Ph And Elongation Growth In Maize Roots, Winfried Peters, Hubert Felle Oct 1999

The Correlation Of Profiles Of Surface Ph And Elongation Growth In Maize Roots, Winfried Peters, Hubert Felle

Winfried S. Peters

High-resolution profiles of surface pH and growth along vertically growing maize (Zea mays) primary root tips were determined simultaneously by pH-sensitive microelectrodes and marking experiments. Methodological tests were carried out that proved the reliability of our kinematic growth analysis, while questioning the validity of an alternative technique employed previously. A distal acidic zone around the meristematic region and a proximal one around the elongation zone proper were detected. This pattern as such persisted irrespective of the bulk pH value. The proximal acidic region coincided with maximum relative elemental growth rates (REGR), and both characters reacted in a correlated …


Humulus Japonicus Siebold & Zucc., John E. Ebinger Oct 1999

Humulus Japonicus Siebold & Zucc., John E. Ebinger

Specimens by Name

No abstract provided.


Ferns, Robert H. Mohlenbrock Oct 1999

Ferns, Robert H. Mohlenbrock

Illustrated Flora of Illinois

Perhaps no other group of plants attracts more interest among both professional and amateur botanists than ferns. As early as 1846, when one of the first lists of Illinois plants was published, sixteen species of ferns were already known in the state. The longtime interest of a great many people makes the distribution of ferns better known than that of any other group of plants in Illinois.

This detailed account of ferns and fern-allies was first published in 1967 as the first volume in the series The Illustrated Flora of Illinois. Eminent botanist Robert H. Mohlenbrock has now revised Ferns …


Herbicide Evaluation In Arkansas Rice, 1998, Ron Talbert, Ford Baldwin, David Gealy, Tomilea Dillon, Lance Schmidt, Eric Scherder, Celeste Wheeler, Leopoldo Estorninos Jr., Jeff Rutledge, Rebecca Chavez Oct 1999

Herbicide Evaluation In Arkansas Rice, 1998, Ron Talbert, Ford Baldwin, David Gealy, Tomilea Dillon, Lance Schmidt, Eric Scherder, Celeste Wheeler, Leopoldo Estorninos Jr., Jeff Rutledge, Rebecca Chavez

Arkansas Agricultural Experiment Station Research Series

Weed control is economically important for production of rice, a major crop in Arkansas. These findings summarize efforts of the team of Arkansas scientists working on weed control strategies for rice during 1998. Various technologies were evaluated in field studies involving the major weed problems and rice production systems used in the state. Results from these studies will add to the arsenal of weed control options for producers. The preliminary results reported here generally warrant further testing for more advanced findings and for the labeling of new technologies and, finally, are the basis for updating safe, effective, and economical recommendations …


Forage News [1999-10], Department Of Plant And Soil Sciences, University Of Kentucky Oct 1999

Forage News [1999-10], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

  • Dealing with the Drought of ’99 Fall Forage Conference is October 5
  • What to Do with Thin, Open, Cull Cows Has Always Been a Question for Beef Producers
  • Princeton Grazing School Set For October 12-14
  • Kentucky Forage & Grassland Council Activities
  • Evaluating Hay Quality
  • Upcoming Events


Legume Logic Number 110 Oct 1999

Legume Logic Number 110

Legume Logic

Contents

Global breeders record benefits of Narrow-leafed lupine

Pulse points

Anthracnose update

Tariff breakthrough

1999/00 Yiels expectations

Asia tour 200

Indicators improve

Winter pulse plantings for 1999 ('000 hectares)


Review Of A Classification Of North American Biotic Communities By David E. Brown, Frank Reichenbacher, Susan E. Franson, Robert B. Kaul Oct 1999

Review Of A Classification Of North American Biotic Communities By David E. Brown, Frank Reichenbacher, Susan E. Franson, Robert B. Kaul

Great Plains Research: A Journal of Natural and Social Sciences

This is the latest of many efforts over the past century to classify North America's natural, undisturbed biological communities as they existed in pre-agrarian times and in many places continue to exist today. Its authors' stated objective is to integrate existing works into a hierarchical synthesis that can lead to a standardized system for researchers, land managers, conservation groups, and government agencies. To that end, the authors have modified and expanded David Brown's earlier classification for the Southwest to cover the continent, defined here as the area from the Panama Canal to the Arctic, including Greenland and some of the …


Review Of Population Biology Of Grasses, Thomas B. Bragg Oct 1999

Review Of Population Biology Of Grasses, Thomas B. Bragg

Biology Faculty Publications

Population Biology of Grasses provides a wealth of knowledge beyond population biology that ecologists and ecosystem biologists will find relevant to their concerns, particularly those with an interest in grasslands. Though not limited to the Great Plains region, the book would make an excellent addition to the reference shelf of anyone interested in grasses and grassland-related ecosystems, including readers with an interest in land management and preservation. While the papers are written for different levels of readers, all provide information accessible to non-specialists.


Center For Grassland Studies Newsletter, Fall 1999, Volume 5, No. 4 Oct 1999

Center For Grassland Studies Newsletter, Fall 1999, Volume 5, No. 4

Center for Grassland Studies: Newsletters

Contents:

End-of-Season Visual Obstruction after Summer Grazing in the Nebraska Sandhills by Patrick Reece, Jerry Volesky, and Walter Schacht, Department of Agronomy, UNL

Global Change: Implications for Great Plains and Midwest Grasslands by David Wedin, School of Natural Resource Sciences, UNL

On the Green with the Environment [Reprinted from the June/July, 1999 Conservation Voices]

Special Publication on Grasslands at the Millenium

USDA Holds Land Conservation Forums and Summit


Nebline, October 1999 Oct 1999

Nebline, October 1999

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Giving recipes a food safety update
Needle drop on evergreens
Answers to composting questions Fall clean up in the orchard
What do they like to eat?
Responsible hunting and landowner relations
Jumpin’ jiminy crickets
Autumn is a great time to clean your feeder
Head lice videotape available
October is the best time to treat hard to control pasture weeds
The value of composting
Plateau herbicide cleared for use in Nebraska
Grain storage information on the web
Fall and winter care of water gardens
Tractor safety tips (part 10)
Transplanting peonies
Household invaders
Modified food guide pyramid for ages 70+
Healthy …


Ua66/5 Newsletter, Wku Agriculture Oct 1999

Ua66/5 Newsletter, Wku Agriculture

WKU Archives Records

Newsletter created by WKU Agriculture Department re: faculty/staff, students/alumni, student organizations and clubs and donors.


Mechanical Conditioning Of Tomato Seedlings Improves Transplant Quality Without Deleterious Effects On Field Performance, Lauren C. Garner, Thomas Björkman Sep 1999

Mechanical Conditioning Of Tomato Seedlings Improves Transplant Quality Without Deleterious Effects On Field Performance, Lauren C. Garner, Thomas Björkman

Horticulture and Crop Science

Excessive stem elongation reduces plant survival in the field and hinders mechanical transplanting. Mechanical conditioning is an effective method for reducing stem elongation during transplant production. This investigation examined the consequences of mechanical conditioning, using brushing and impedance, on subsequent field performance of tomatoes (Lycopersicon esculentum Mill.). Mechanically conditioned transplants of processing tomatoes resumed growth after transplant shock as quickly as did untreated plants, and subsequent canopy development was also equal. In 4 years of field trials, yield was not reduced by mechanical conditioning. Transplants for fresh-market tomatoes may be more sensitive to injury than those for processing tomatoes because …


Legume Logic Number 109 Sep 1999

Legume Logic Number 109

Legume Logic

Contents

Herbicide resistant crops: What's the story?

Aphids - The spary debate

Swathing lupins

Ascochyta prevention

Budworm control

Pulse points 1998/99

Lupin pool payments


Modeling Surface And Subsurface Pesticide Transport Under Three Field Conditions Using Przm-3 And Gleams, Robert W. Malone, Richard C. Warner, Stephen R. Workman, Matt E. Byers Sep 1999

Modeling Surface And Subsurface Pesticide Transport Under Three Field Conditions Using Przm-3 And Gleams, Robert W. Malone, Richard C. Warner, Stephen R. Workman, Matt E. Byers

Biosystems and Agricultural Engineering Faculty Publications

Contaminant transport models should be evaluated over a wide range of conditions to determine their limitations. The models PRZM and GLEAMS have been evaluated many times, but few studies are available in which predicted movement in runoff and percolate were simultaneously evaluated against field data. Studies of this type are essential because pesticide leaching and runoff are mutually dependent processes. For this reason, PRZM-3 and GLEAMS were evaluated for their ability to predict metribuzin concentrations in runoff, sediment, subsurface soil, and pan lysimeters under three field conditions (yard waste compost amended, no-till, and conventional-till) on a Lowell silt loam soil. …


Forage News [1999-09], Department Of Plant And Soil Sciences, University Of Kentucky Sep 1999

Forage News [1999-09], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

  • Fertilizing Drought-Stressed Forages
  • Harvesting Soybeans for Hay: What Kind of Hay Does it Make? Yield? Problems?
  • New Round Bale Hay Storage at Eden Shale
  • Nitrates in Forages
  • Fall Grazing School
  • What About Drilling Small Grain Into Dormant Pastures?
  • KFGC Accepting Nominations
  • Upcoming Events


Sp307-O-Home Apple Cider Production, The University Of Tennessee Agricultural Extension Service Sep 1999

Sp307-O-Home Apple Cider Production, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Cider making is an art that is as old as apple production itself. When properly made, fresh apple cider is a safe, natural, delicious product that conjures up images of autumn and the country.

Apple cider is simply the liquid that is released when apples are crushed. It has nothing added and nothing taken away from it. Apple cider will be cloudy due to the presence of suspended apple solids. Since apple cider contains no preservatives, it has a limited shelf life, and special attention must be paid to proper storage. The terms apple cider and apple juice are often …


Sfa Gardens Newsletter, Sep 1999, Sfa Gardens, Stephen F. Austin State University Sep 1999

Sfa Gardens Newsletter, Sep 1999, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.


Gender Variation In Croton Californicus (Euphorbiaceae), James Lynwood Smith Ii Sep 1999

Gender Variation In Croton Californicus (Euphorbiaceae), James Lynwood Smith Ii

Loma Linda University Electronic Theses, Dissertations & Projects

Croton californicus Muell. Arg. (Euphorbiaceae) is a subshrub suspected of being dimorphic with phase choices. Gender variation in C. californicus was studied in natural populations of southern California for three years (1994-96) to observe patterns of gender !ability. Some sites exhibited significantly male-biased sex ratios, and these sites often had the greatest number of monoecious morphs, cosexual plants with unisexual flowers. Gender variation was quantified for cosexual plants by calculating the Estimated Floral Gender (EFG) which varied from 1.00 (female) to 0.00 (male). The distribution of the EFG was highly skewed towards maleness. Monoecious individuals were then categorized by …


Biological Control Of Bipolaris Sorokiniana On Tall Fescue By Stenotrophomonas Maltophilia Strain C3, Z. Zhang, G. Y. Yuen Sep 1999

Biological Control Of Bipolaris Sorokiniana On Tall Fescue By Stenotrophomonas Maltophilia Strain C3, Z. Zhang, G. Y. Yuen

Department of Plant Pathology: Faculty Publications

Stenotrophomonas maltophilia strain C3 was evaluated for control of leaf spot on tall fescue (Festuca arundinacea) caused by Bipolaris sorokiniana. In growth chamber experiments, C3 inhibited conidial germination on leaf surfaces and reduced lesion frequency and percent diseased leaf area compared with nontreated controls. The amount of leaf spot suppression was related to the C3 dose applied. The highest dose tested, 109 CFU/ml, prevented nearly all B. sorokiniana conidia from germinating on treated leaf surfaces and provided nearly complete suppression of lesion development. When colloidal chitin was added to C3 cell suspensions of 107 or …


Pesticide Residue Regulation: Analysis Of Food Quality Protection Act Implementation, Linda-Jo Schierow Sep 1999

Pesticide Residue Regulation: Analysis Of Food Quality Protection Act Implementation, Linda-Jo Schierow

RISK: Health, Safety & Environment (1990-2002)

Dr. Schierow discusses the effects of a recent statute on food safety.


Strawberry Bush, Bursting Heart Euonymus Americanus L., Gene Silberhorn Sep 1999

Strawberry Bush, Bursting Heart Euonymus Americanus L., Gene Silberhorn

Reports

The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen ident


Nebline, September 1999 Sep 1999

Nebline, September 1999

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

National 4-H Week
Growing hardy bulbs
Fall storage of tender bulbs, corms and tubers
Hints for fruit storage
Where do fruit flies come from?
Kid's Corner
Wolf spiders are “big, hairy and real fast”
Reduce unwanted advertising mail!
September 20-26, 1999: Celebrate P2 Week!
Bee or wasp problems?
Fall clean-up of warm-season grasses
Prepare grain bins and equipment before harvest
Fall is a good time to control problem weeds Pricing silage into the feed bunk
On-farm grain storage
Prevent fires in wood-burning stoves
Tractor safety tips (part 9)
Water-saving adjustments
Mulch–mowing your lawn
Hemlock and livestock
Drinking water quality ‘report …


Phyla Lanceolata (Michx.) Greene, Gordon C. Tucker Aug 1999

Phyla Lanceolata (Michx.) Greene, Gordon C. Tucker

Specimens by Name

No abstract provided.


Verbena Bonariensis L., Gordon C. Tucker Aug 1999

Verbena Bonariensis L., Gordon C. Tucker

Specimens by Name

No abstract provided.


An Integrated Genetic Linkage Map Of The Soybean Genome, P.B. Cregan, T. Jarvik, A.L. Bush, R.C. Shoemaker, K.G. Lark, A.L. Kahler, N. Kaya, T.T. Vantoai, D.G. Lohnes, J. Chung, James E. Specht Aug 1999

An Integrated Genetic Linkage Map Of The Soybean Genome, P.B. Cregan, T. Jarvik, A.L. Bush, R.C. Shoemaker, K.G. Lark, A.L. Kahler, N. Kaya, T.T. Vantoai, D.G. Lohnes, J. Chung, James E. Specht

Department of Agronomy and Horticulture: Faculty Publications

A number of molecular genetic maps of the soybean [Glycine max (L.) Merr.] have been developed over the past 10 yr. These maps are primarily based on restriction fragment length polymorphism (RFLP) markers. Parental surveys have shown that most RFLP loci have only two known alleles. However, because the soybean is an ancient polyploid, RFLP probes typically hybridize and map to more than one position in the genome. Thus, the polymorphic potential of an RFLP probe is primarily a function of the frequency of the two alleles at each locus the probe detects. In contrast, simple sequence repeat (SSR) …


Verbena Urticifolia L., Bob Edgin Aug 1999

Verbena Urticifolia L., Bob Edgin

Specimens by Name

No abstract provided.


Phyla Lanceolata (Michx.) Greene, Bob Edgin Aug 1999

Phyla Lanceolata (Michx.) Greene, Bob Edgin

Specimens by Name

No abstract provided.


Vitis Vulpina L., Gordon C. Tucker Aug 1999

Vitis Vulpina L., Gordon C. Tucker

Specimens by Name

No abstract provided.