Life Sciences Commons^™

Lupin Logic Number 41

Lupin Logic

Content:

Kiev lupins for export

Lupin variety recommendations for 1994

Stubble grazing

Storage of lupin information

Resistance to testing?

Christmas message

193/94 Estimateed lupin equities

Lupin Logic Number 40

Lupin Logic

Contents

Albus lupin warning

Market outlook

Seed quality testing

Binder and index

Furrow seeding

Lupin Logic Number 39

Lupin Logic

Contents

Lunar landscape

- Rhizoctonia patch

- Eradu patch

- Action required

Back saving bin

Row orientation

Manganese spraying

Reminders

Correction

1992/93 Pool payments

Effect Of Topping Time On Dark Tobacco Yield, Bill Maksymowicz

Agronomy Notes

When the terminal bud is removed from tobacco by topping, a number of changes are triggered in the plant: increased root growth, nicotine synthesis, improved drought tolerance, and leaf expansion and increased thickness. These changes are affected by topping time; generally there will be less crop response to topping as topping is delayed. The most important changes, from a producer's perspective, are continued leaf expansion and thickening, with a commensurate improvement in quality and increase in yield. Topping at the proper time of plant development is often difficult on a field scale since uneven crop growth, particularly when tobacco is …

Analysis Of Black Point In Wheat, J M. Wilson

Technical Bulletins

Fungal staining (black point) of wheat can reduce the quality of grain. The most serious problem is a discolouration of products. Discolouration is a consequence of infection by microorganisms. The most likely cause in Western Australia is a species of the common fungus Alternaria. Infection and discolouration occur between flowering and grain maturity, and the optimum environmental conditions are probably consecutive days of high relative humidity together with warm temperatures.

Managing For Stubble Retention, Linda Leonard

Bulletins 4000 -

One of the objectives of sustainable farming systems is to retain as much cover on the soil as possible – this helps to maintain soil structure and protects the soil from erosion.

Improving productivity, maintaining soil structure, and stabilising fragile soils are some of the desired aims of farming. Sound rotations, reduced tillage, effective use of herbicides, maintenance of ground cover and careful management of stock are part of the management process used in achieving these goals.

This Bulletin provides an introduction to stubble retention systems. Its purpose is to create an awareness of the benefits and principles of stubble …

Lupin Logic Number 38

Lupin Logic

Contents

Attitudes to dry seeding lupins

Communication corrections

Liming and lupins

- Editors note

CMV testing 1993/94

- Changes for 1993

Reminders

1992/93 Pool payments

Sucker Control Performance In Dark Tobacco, Bill Maksymowicz

Agronomy Notes

Poor sucker control adversely affects tobacco yield and quality. Suckers serve as a "sink" for nutrients and dry matter that otherwise would go to the expanding leaves intended for harvest, resulting in lower yields. Hand removal of large suckers can cause leaf damage, and failure to remove suckers may result in spoilage during the curing process, resulting in lowered quality. Use of chemical sucker control measures used in burley production can produce lower yields or W1desirable cured leaf color of dark tobacco. These studies were conducted to compare the effects of recommended sucker control practices for dark tobacco with systems …

Proceedings Of The Workshop On Adaptation Of Plants To Soil Stresses, J.W. Maranville, V.C. Baligar, R.R. Duncan, J. M. Yohe

INTSORMIL Impacts and Bulletins

Sustainable production of food and forage with a focus on plant adaptation to stress environments will be a continued priority for developing countries in the future. Since many areas of the world which support substantial human populations are drought prone, such as the subsaharan African zone and others, the primary focus has been on drought. However, one of the greatest restraints to sustainability of agriculture worldwide is the lack of sufficient soil nutrients for crop growth, or other soil constraints such as acidity or salinity which hinder crop production substantially.

Optimizing soil fertility or amending acid and saline soils to …

Lupin Logic Number 37

Lupin Logic

Contents

Lupin yields

Western flower thrips

Stubble handling

Broome seed banks

Reminders

Communication channels

Byenup Hill Catchment Report : Carlecatup Catchment Land Conservation District, Justin Hardy

Agriculture reports

The Byenup Hill Catchment is situated just west of Graham's Well which was a major watering point for early travellers. The area was first settled around 1890 and some of the names associated with early settlement are Hinchey, Dennis, Bilney, Holding and Gabette. Clearing with axes was a slow process and most of the sheep were run in the bush in areas free from poison bush. A reasonable number of trees were left standing and the last clearing was done in the 1980's. The first signs of salt appeared in the 1930's and advanced with increased clearing.

Lupin Logic Number 36

Lupin Logic

Contents

Paddock walk?

Virus resitant lupins

Fest lupins

Beethoven not good enough!

Lupin receivals

Kiev post plant weed control

Mailing list

Arkansas Rice Research Studies 1992, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1992, Arkansas Agricultural Experiment Station Research Series 425. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.

Lupin Logic Number 35

Lupin Logic

Contents

Transgenic lupins

Seventh international Lupin Conference

Inoculation

Lupin Survey

Post emergence weed control

Fungicides post plant

Yield estimates

Projected 1992/93 Pool payments/tonne

Lupin Logic Number 34

Lupin Logic

Contents

Kiev Mutant

- Soil type

- Rainfall

- Seed treatment

Time of seeding

- Seeding rate and agitation

- Weed control

- Insects

- Harvest

- Stubble grazing

- Marketing

Breeding Albus lupins - Beavan Buirchell

4.5 tonnes per hectare

Lupin outlook - John Orr

Forage Yield, Quality, Compatibility, And Persistence Of Warm-Season Grass—Legume Mixtures, G. L. Posler, Andrew W. Lenssen, G. L. Fine

Andrew W. Lenssen

Development of compatible, persistent, warm-season grass-legume mixtures could increase forage yield and quality during summer months. We established a trial to determine forage yield, quality, species compatibility, and persistence of binary mixtures of warm-season grasses with selected legumes, five of which are native to the central USA. Grass entries were switchgrass (Panicum virgatum L.), sideoats grama (Bouteloua curtipendula Michx.), and indiangrass [Sorghastrum nutans (L.) Nash]. Legume entries were purple prairieclover [Dalea purpurea Vent.; syn. Petalostemon purpureum (Vent.) Rydb.], roundhead lespedeza (Lespedeza capitata Michx.), leadplant (Amorpha canescens Pursh), Illinois bundleflower [Desmanthus illinoensis (Michx.) MacMill., B. Robins. & Fern.], catclaw sensitive brier …

Lupin Logic Number 33

Lupin Logic

Contents

Phosphorus for lupin crops

- Using the table

Phosphate source

Lupin seeding rates

Lime and lupins

Time of planting

1992/93 Pool payments

A Survey Of The Content Of Some Heavy Metals In Soil And Corn Grain In The Pond And Lower Green River Bottoms, Kenneth L. Wells, Greg Henson, George Kelley

Agronomy Notes

Corn is intensively grown along the Green and Pond Rivers in McLean, Hopkins, and Webster Counties, Kentucky, representing a major source of income to producers in those areas. However, producers in McLean County have experienced poorer corn production than expected for many years. This has been observed more on the Pond River bottoms and the Green River bottoms below the confluence of the Pond than upstream on the Green above the Pond. Some producers have speculated that their poor production may be associated with chemical pollution from the Pond River and/or nearby industrial sources. On this basis, an assumption was …

Lupin Logic Number 32

Lupin Logic

Contents

Lupin survey

- Lupin time of planting census 1992

- Yield

- Stand density

- Concession

- Dry seeding

- Time of seeding

Tonnes or grams

Inoculant and seed treatments

Yield losses with 0.5% CMV seed

Stubble burn?

New research on early establishment of lupins

Reduced Scepter Rates For Broadleaf Weed Control In Soybean, D. S. Jones, H. Lin, M. V. Kane, Larry J. Grabau

Agronomy Notes

Public agencies are placing greater scrutiny on herbicide applications by farmers. For example, the corn herbicide atrazine is now classified as a restricted use pesticide, with limits placed on allowable rates. While soybean growers may share some of this concern for the environment, rate reduction is more likely to be attractive for economic reasons. Some growers are already cutting back on herbicide rates. For example, Missouri data shows that the average application rates for soybean herbicides were only 75% of the labelled rate. While reduced rates might save growers money, and may be kinder to the environment, there is a …

Hybrid Variation For Yield, Crude Protein, Feed Value And Percent Lysine Of Corn Grown In The 1991 Kentucky Hybrid Corn Performance Test, C. G. Poneleit, K. O. Evans, Michael Collins, D. O. Liptrap

Agronomy Notes

These data are the results from the second year of protein analyses of corn hybrids grown at three locations in the Kentucky Hybrid Corn Performance Test. These analyses were supported. by a grant from the Kentucky Corn Growers Association.

Lupin Logic Number 31

Lupin Logic

Contents

The 1992/93 harvests - Chris Maughan, Grain Pool of WA

International market report - John Orr, Grain Pool WA

Price forecast

Early planting survey

Lupin outlook meetings

Lupins for feed and food - Barry Cox, Grain Pool WA

- Stockfeed

- Human consumption

CMV testing

Seed size

Interview With Tommy Paschall Regarding Dark Fire Tobacco Barns And Processing (Fa 476), Manuscripts & Folklife Archives

FA Oral Histories

Transcription of an interview with Tommy Paschall conducted by John Morgan for an oral history project about dark fire tobacco barns. Paschall discusses tobacco cultivation, processing, and trade. Paschall lived near Hazel, a small town in Calloway County, Kentucky.

Barley Yellow Dwarf Virus In Cereals, Simon Mckirdy, Roger Jones

Journal of the Department of Agriculture, Western Australia, Series 4

Worldwide, barley yellow dwarf virus (BYDV) is the most widespread and damaging virus disease of cereals. It infects wheat, barley, oats and grasses and is transmitted by several aphid species. The virus is not seed-borne and to persist from one growing season to the next it must survive in over-summering grasses.

Barley yellow dwarf virus decreases grain yield and also causes shrivelled grain. Yield loss is greatest from infection early in the growing season.

Establishment Of Lupin Seedlings, Miles Dracup

Journal of the Department of Agriculture, Western Australia, Series 4

Good seedbed conditions lead to high and rapid seedling emergence and vigorous seedlings best equipped to avoid disease, weed competition and sand-blasting. Good establishment is needed for a high yielding crop.

In Western Australia, seedbed moisture and temperature are most likely to limit successful emergence of lupins, especially with the trend toward early sowing.

Research by the Department of Agriculture is helping to define seedbed temperature and moisture requirements for successful lupin establishment that will help future research for improving seedbed conditions.

Lupin Logic Number 30

Lupin Logic

Contents

Early planting survey

Seed manganese and emergence

Lupin video

Soil testing

New manganese fertiliser

Aphids susceptibility of lupin varieties

Addition Of Gel-Forming Hydrophilic Polymers To Nitrogen Fertilizer Solutions, Robert Mikkelsen, A David Behel

Robert Mikkelsen

Environmental and economic concerns are causing a search for more effective fe rtilizer products and improved methods for managing existing fertilizers. This laboratory and greenhouse study was conducted to determine if the addition of gel-forming hydrophilic polymers to N fertilizer solutions could reduce N leaching loss and increase plant uptake of N. In the first experiment, a solution of urea ammonium nitrate (UAN, 32% N) was mixed with a variety of polymers at three concentrations, band applied to a sandy soil, and leached weekly for six weeks. Nitrogen leaching losses were reduced from 0 to 45% during the first four …

Controlled-Release Fertilizers To Increase Efficiency Of Nutrient Use And Minimize Environmental Degradation - A Review, Avi Shaviv, Robert Mikkelsen

Robert Mikkelsen

Total world consumption of fertilizer N, P2 O5, and K2O in 1990 / 1991 was 78. 37. and 26 million tons per annum respectively, with a projected yearly increase of demand of about 2 to 3% . Trends in crop production (maize and wh eat) in the last four decades s how that N application rates increased about 15 times whereas its accumulation in grain increased only 3 to 4 times. At the same time nutrient recovery by crops remained relatively low (e .g. a bout 50% for N). This represents a potentially alarming situation from environmental, economic and resource …

Effect Of Light, Nitrogen, And Water Management On Rice (Oryza Sativa) Tolerance To Fenoxaprop, Roy J. Smith Jr., Aurora M. Baltazar, Paolo Nastasi

Journal of the Arkansas Academy of Science

The effect of light intensity, nitrogen (N), and water management on rice (Oryza sativa cv. 'Newbonnet' and 'Lemont') tolerance to fenoxaprop {(+)-2-[4[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid} was determined in two field studies at the Rice Research and Extension Center, Stuttgart, AR, in 1988 and 1989. In one study, 'Newbonnet' rice was treated with 0.22 kgai ha-1fenoxaprop at 0, 1, 3, 5, 7, 10, 14, and 28 days after N application and flooding. Moderate to severe foliar chlorosis, stunting, and stand and yield reductions occurred when fenoxaprop was applied within 7 days after N application and flooding. None to slight injury or yield reduction …

Role Of Endophytes In Tall Fescue, E. L. Piper, C. P. West

Journal of the Arkansas Academy of Science

Tall fescue (Festuca arundinacea Schreb.) is the most commonly grown cool season grass used for pastures in Arkansas. Most tall fescue contains a fungal endophyte (Acremonium coenophialum Morgan-Jones & Gams), which causes fescue toxicosis in livestock and costs cattle producers millions of dollars annually in lost production. Endophyte presence is known to reduce wild mammal populations in areas where tall fescue is prevalent. The endophyte spends its entire life cycle within the plant and is transmitted through the seed. The association is mutualistic with the plant providing nutrients for the endophyte and the endophyte conferring drought, insect, and nematode resistance …