Physical Sciences and Mathematics Commons^™

Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1983

Conservation and Survey Division

No abstract provided.

Quobba Point Chalet Development Land Capability Study [And] Environmental Consideration, J R H Riches, L E. Chalmers

Resource management technical reports

The preferred area for development is the Old Stabilised Dune System. The Hind Dune Flat is a stable area but is limited in size. Other environmental and town planning considerations may militate against development of this area for Chalet Development.

Energy Conservation In Corn Production, Wilbur W. Frye

Soil Science News and Views

On-farm production of food and fiber uses about 3% of the annual U.S. energy consumption. About one-third of this energy is directly from fossil fuels used in farm tractors and trucks and for crop drying, while about one-fourth is used in manufacturing and transporting fertilizers. Tillage and N fertilizers are the two largest uses of energy in non-irrigated product ion of crops which are not dried artificially. Thus, the greatest effects of energy conservation can be achieved in these two areas.

Review Of Current Drainage Investigations In Western Australia, R A. Nulsen

Resource management technical reports

No abstract provided.

Curbur Station : Inventory Of The Range And Its Management, Alexander Mcrae Holm

Resource management technical reports

Ten land systems were identified, descriped and mapped. potential feed status was assessed for each land system. The land systems were then ranked accordingly and stocking rates allocated. Wongdong saline shrublands was considered to be the most productive system and Narryer hills, outcrops and breakaways the least productive. An assessment was made of the range condition and erosion status of the least. These assessments indicated that most of the pastures had been heavily utilized in the past.

Important Geological Features And Localities Of Maine, Maine Geological Survey

Maine Collection

Important Geological Features and Localities of Maine

Executive Department, Maine Geological Survey : Maine State Planning Office

(December, 1982).

Contents: Introduction / Purpose of this Study / The Geology of Maine / Important Publications / Catalogue of the Critical Geologic Features of Maine / Recommendations for Further Research / Publications / Conclusions / Acknowledgements / References Cited / Critical Areas Program List of Geological Planning Reports

Progress Report On Effects Of Contour Banking On Surface Runoff At The Berkshire Valley Experimental Catchment (Near Moora) 1961-82, K J. Bligh

Resource management technical reports

The time lag prior to peak runoff following rains of comparable high intensity increased by approximately 80 per cent in the largest event after the construction of contour banks. Although 80 per cent more runoff also occurred because the catchment was wetter and had been cultivated for three years in a row, the peak rate of runoff increased by only approximately 20 per cent. That the peak rate was not increased by 80 per cent, may be primarily attirbuted to the effect of the contour banks.

Does No-Till Change Soil Management Practices?, Robert L. Blevins

Soil Science News and Views

Successful no-tilling requires a different approach to soil management practices. Since continuous no-tillage systems leave residues on the soil surface without mechanically mixing them into the plow layer and since lime and fertilizer are surface-applied, no-tilled soils have biological, chemical and physical properties contrasting with those of a plowed soil. For any crop production system to be widely accepted and used it must provide and maintain desirable physical properties of the soil, control erosion and replace nutrients removed by crops and other losses. This can be accomplished in a no-till system if proper management is used.

Tb108: Chemical And Physical Properties Of The Becket, Colton, Finch, Lyman, Masardis, Naumburg, And Skerry Soil Mapping Units, R. V. Rourke, D. C. Bull

Technical Bulletins

Soil morphology and soil characterization studies were done on seven soil mapping units in Maine. Soil profiles were selected, described and sampled jointly by soil scientists from the Soil Conservation Service, USDA and the Maine Agricultural Experiment Station. Chemical and physical measurements of each soil mapping unit were made in the laboratory. Soil profile description and the laboratory determinations are presented for each sample site.

Soil Ph: What It Is, How It Is Measured, Why It Is Important, John H. Grove

Soil Science News and Views

Soil pH is related to the hydrogen ion (H⁺) activity of the soil-water system. The chemical definition of pH is as follows: pH=-log (H⁺). In other words, for a pH drop of 1 unit (e. g. from pH 6 to pH 5) there will be a ten~fold increase in H⁺ activity in the soil solution. If pH 1 rises by 1 unit, only one-tenth as much acidity will be present in solution. As such, pH is only a measure of the active acidity in the soil water solution bathing plant roots. This fraction of total …

Liming Tobacco Soils, J. L. Sims

Soil Science News and Views

Control of soil acidity by liming is very important in successful tobacco culture. Adding lime to an acid soil increases the availability of nearly all plant nutrient elements, increases the efficiency of added fertilizers, and prevents the toxic effects of high concentrations of soluble aluminum, manganese, and iron. It is a natural tendency for most Kentucky soils to become acid with time due to losses of bases (calcium, magnesium, potassium, and sodium) from soil by rainfall, However, tobacco soils possess certain unique problems that warrant careful monitoring of soil pH every two to three years.

Fall Fertilization Programs, William O. Thom

Soil Science News and Views

Achieving recommended fertility levels for the next season's crop is important enough that it should not be subject to all the uncertainties of spring weather. Fall offers more time for careful planning of fertilizer and lime requirements based on good soil tests. Fields are generally in good condition to support application equipment without creating excessive soil compaction.

Atrazine Degradation, Sorption And Bioconcentration In Water Systems, Duane C. Wolf, Ramon L. Jackson

Technical Reports

The herbicide atrazine is used extensively to control broadleaf and grass weeds in such crops as sorghum and corn. A small portion of the atrazine may be lost from the area of application by surface runoff and could enter a stream or lake. The objective of this study was to evaluate atrazine degradation, sorption, and bioconcentration in watersediment systems. The results indicated that sediments with lower pH values and higher organic matter levels adsorbed higher levels of atrazine than sediments with neutral pH values and lower organic matter levels. Microbial decomposition of the herbicide was slow under the conditions of …

Seasonal And Yearly Fluctuations Of Soil Tests, Lloyd W. Murdock

Soil Science News and Views

One of the most important management tasks of a good farmer is taking a good soil sample. The recommendations based on these samples will help determine yield and profitability. A number of factors have an effect on the soil test results.

An Ecological Analysis Of Relic Diatoms In Sediments Of Las Vegas Bay, Lake Mead, David Ross Hetzel

Publications (WR)

Relic diatoms in sediments of the inner Las Vegas Bay, near the Las Vegas Wash sewage inflow, were examined in order to assess historic trophic conditions in this area of Lake Mead. Diatom sedimentation rates and ratios of Araphidineae/Centrales (A/C) diatom groups were determined from sediment cores collected in the old wash channel 1.5 km from the sewage inflow (station 2), in a small cove 1.5 km further downstream (station 3) and in an adjacent embayment off Gypsum Wash (station 4). Diatom sedimentation rates generally increased from the bottom to the top of each core, but pronounced minima existed at …

Nebraska's Platte River: A Graphic Analysis Of Flows, Ray Bentall

Conservation and Survey Division

WSP-53

Fertilization Of Double-Crop Soybeans, Grant W. Thomas

Soil Science News and Views

The improvement of minimum-and no-tillage methods has helped increase the double-cropped acreage of soybeans in Kentucky to about 700,000 acres. Similar increases have been observed in our neighboring states. Most double-cropped soybeans in Kentucky follow winter wheat harvested for grain. Thus, they are at a disadvantage if the wheat leaves the soybean crop with a nutrient-deficient soil.

Groundwater Levels In Nebraska, 1981, Martin S. Johnson, Darryll T. Pederson

Conservation and Survey Division

No abstract provided.

Tb105: The Composition Of Equilibrium Soil Solutions From Forest Soil B Horizons, Ivan J. Fernandez, Roland A. Struchtemeyer

Technical Bulletins

The objective of the present study was to evaluate the composition of B horizon equilibrium soil solutions from selected Maine forest soils. The B horizon was chosen for evaluation because it (1) best expressed the weathering processes active in the soil, (2) occupied the greatest volume of the solum, (3) had the most complex chemistry of the major horizons, and (4) provided the major corridor in forested ecosystems for subsurface flow and chemical alteration of ground waters.

Use Of Molybdenum For Soybean Production, Monroe Rasnake

Soil Science News and Views

Molybdenum (Mo) is a micronutrient that is required by soybeans in very small amounts. As little as 0.5 parts per million of Mo in soybean tissue is sufficient for normal growth. Compare this with a phosphorus sufficiency level of about 2,000 parts per million. However, even though only small amounts are needed, a Mo deficiency can drastically reduce yields of soybeans.

Genesis Of A Vertisol And An Associated Palexeroll In Northern Utah, Robert C. Graham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The genetic relationship between a Vertisol and an associated Mollisol with an argillic horizon was studied. These soils are taxadjuncts of the Hawkins and Ostler series, respectively. They occur in the Wasatch Mountains of northern Utah and have similar parent materials, altitudes, and slope percentages. Ostler soils have a dense cover of Gambel oak (Quercus gambelii) and occur preferentially on north aspects. Mule's ear (Wyethia amplexicaulis) is the dominant vegetation on Hawkins soils, which are most frequent on south aspects. Erosion is prevalent on Hawkins soils because the mule's ear does not adequately cover the soil …

You Can Make Money Producing And Marketing Alfalfa In The 80'S, David C. Petritz

Kentucky Alfalfa and Stored Forage Conference

We are today, as we were during most of the 70's, concerned with the future of the forage enterprise and the livestock species that depend on it. Will they survive an environment in which the emphasis is on grain exports? Will they survive in an environment in which consumers are not able (but hopefully willing) to pay prices for red meats which are profitable for all segments of the livestock industry? Will they survive in the 80's when real interest rates will be relatively high?

Marketing Alternatives For Kentucky Alfalfa: Needs, Challenges And Opportunities, J. Kenneth Evans

Kentucky Alfalfa and Stored Forage Conference

There are unquestionable needs for more high quality alfalfa in the Southeastern U.S. From these needs arise the challenge and opportunities for those who are researching, informing, teaching, and even promoting alfalfa. Likewise, there are income opportunities for those who own resources which could be used in producing and marketing alfalfa. This paper will discuss some of the factors which should be considered in hay marketing, i.e., (1) a dependable supply of hay; (2) producing high quality hay; and (3) planning to supply the highest quality hay to the highest priced market.

Hay - The National And International Traveler, Harry D. Gates Jr.

Kentucky Alfalfa and Stored Forage Conference

Prior to 1883, packing, shipping and hauling hay was an irregular business. There was no established custom to govern, and every transaction was typical of the parties engaged in it.

The hay crop had become the leading agricultural product in value, and its importance commercially was appreciated. The amount of hay leaving the farm had steadily increased, but trade environment did not offer much encouragement for businessmen of regular methods, or the capitalist to embark in the business, and it was apparent to every thinking person that for the proper development of so important an industry it was necessary in …

Development Of Local Hay Association, Roger Sparrow, Eric Hinton, J. H. Ragland

Kentucky Alfalfa and Stored Forage Conference

The need for a Hay marketing "system" had been obvious to hay sellers and agricultural leaders in Larue County for some time. Five or six hay producers had been selling mainly alfalfa hay to truckers, who would transport the hay to a buyer and reap the profit. Hay was mostly sold by the bale and at a low price. Because of the land and soil type, Larue County had a good potential to produce alfalfa as a cash crop. The development of this potential was being limited by an unreliable and unprofitable market. Given these conditions, the development of a …

Alfalfa From The Consumer Standpoint, John Williams

Kentucky Alfalfa and Stored Forage Conference

Traditionally, horsemen in this part of the United States have fed grass hay mixed with good red clover hay to their horses in training as well as their horses on the farm. Knowing that legume hay is high in protein, horsemen found this is a good source of the needed protein for their animals no matter what activity they were engaged in. A few problems were found with clover hay. First of all, it was usually dusty and, if not made under ideal circumstances, the hay was dark and in some cases moldy. The hay could never be purchased in …

Innovations In Hay Harvesting And Storing, V. L. Lectenberg, D. A. Holt

Kentucky Alfalfa and Stored Forage Conference

Haymaking in the humid parts of the U.S. is the most risky operation that farmers engage in. Standing hay is extremely high in moisture and must be dried to at least 25% moisture less before it can be stored without spoilage. Most farmers rely on natural field drying processes to cure their hay. Natural drying is often slowed by high relative humidity. Rainfall frequently occurs before the hay has dried which further slows the drying process and can result in serious nutrient and yield losses. Haymaking is also a labor-intensive farming operation and, until recently, involved a large amount of …

Breaking The Alfalfa Yield Barrier, J. Paul Mueller

Kentucky Alfalfa and Stored Forage Conference

During the past one-hundred or so years, alfalfa production has spread and flourished in the United States. It has contributed to progress in many phases of the livestock industry.

No-Till Establishement Of Alfalfa, Harlan E. White, Dale D. Wolf

Kentucky Alfalfa and Stored Forage Conference

The no-till concept has been widely accepted in Virginia for corn and soybean production. However, alfalfa is still commonly established by plowing and tilling the soil into a fine seedbed. Each year many tons of productive topsoil is eroded by rainfall on those prepared seedbeds. The resulting gullies remain in the hayfield for the life of the stand to damage equipment and "rattle the teeth" of the operator.

Current Disease Problems In Alfalfa, William C. Nesmith

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is attacked by many fungi, bacteria, viruses and nematodes which USDA estimates reduces hay yields by 24% annually in the U.S. Even greater losses occur in Kentucky. However, it is the diseases of the root and crown which cause the greatest damage because they limit the number of years a stand can remain productive.