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Articles 38191 - 38220 of 39782

Full-Text Articles in Physical Sciences and Mathematics

Nitrogenous Fertiliser Requirements In Different Cropping Rotations - 1979 Results, M G. Mason, I Rowland Jan 1979

Nitrogenous Fertiliser Requirements In Different Cropping Rotations - 1979 Results, M G. Mason, I Rowland

Experimental Summaries - Plant Research

Nitrogen requirement of wheat after clover, lupins and cereal - 78C1, 78N1. Nitrogen requirement of barley after clover, lupins and cereal - 78E3. Nitrogen fertiliser requirement in alternate crop-pasture rotation. Botanical composition of Pasture blocks (Sampled 16/9/79) - 78BA1. Pasture Blocks (Sampled 3/9/79) - 78WH2.


Fallow Re-Assessment, D Tennant Jan 1979

Fallow Re-Assessment, D Tennant

Experimental Summaries - Plant Research

Fallow re-assessment. I. 72M29. Location - Merredin Research Station II. Other fallow results. As part of the fallow re-assessment project, a study was made of results from all trials done since the early 1920's which either compared fallow with non fallow or examined other aspects of fallowing. Analysis of these data has led to an update of some of the rainfall - soil water storage - yield relationships presented in previous reports. On the basis of these rainfall-yield relationships and of relevant rainfall statistics we can make an assessment of the probable value of fallow at different locations; Merredin; Chapman, …


Long Term Rotation Trials, I Rowland Jan 1979

Long Term Rotation Trials, I Rowland

Experimental Summaries - Plant Research

Locality: 66M29, 67Cl3, 67N4, 68E5, 68SG5, 73SG16. Soil type, history, rainfall and wheat/lupin yields.


Nebraska Rainbow Trout, Nebraska Game And Parks, G. Zeurlein, L. Hesse, J. Seeb, L. Wishard Jan 1979

Nebraska Rainbow Trout, Nebraska Game And Parks, G. Zeurlein, L. Hesse, J. Seeb, L. Wishard

Nebraska Game and Parks Commission: Publications

Chapter 1 Lethal and Preferred Temperatures of Lake McConaughy Rainbow Trout Versus Domestic Strain Rainbow Trout By R. Vancil, G. Zuerlein and L. Hesse

Chapter 2 A Nitrifying Filter-Cooling Condenser System for Total Water Re-use in Cold-Water Fish Holding or Rearing Applications By L. Hesse, G. Zuerlein and R. Vancil

Chapter 3 Biochemical Genetic Analysis of Two Strains of Nebraska Rainbow Trout By J. Seeb and L. Wishard

The self-sustaining rainbow trout population living in Lake Mcconaughy and the North Platte River tributaries is unique to the Great Plains region. The population spends most of its adult life in the …


Managing Water-Repellent Soils, D A. Mcghie Jan 1979

Managing Water-Repellent Soils, D A. Mcghie

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

A study of water-repellent soils has led to some management recommendations.


Phosphorus Sources Trials, J W. Bowden, M Baker Jan 1979

Phosphorus Sources Trials, J W. Bowden, M Baker

Experimental Summaries - Plant Research

Pasture Trials 76BU1 New land pasture at Yallingupo Sand over laterite. 75N07B New land pasture at Chittering. Grave lo 76MT10 New land pasture at Mount Barker. Gravel. 77MT1 New land pasture at Mount Barkero Methods and particle size. Cropping Trials 76N4 New land - Phosphorus sources on barley - gravel sitee 76LG6 Short history - Phosphorus sources on barley - gravelly sande 76WH9 New land Phosphorus sources on wheat - loamy sands 77M016 - New land - Phosphorus sources on wheat - gravel ~ 3rd crop.


Potential Use Of Hydroelectric Facilities For Manipulating The Fertility Of Lake Mead, Larry J. Paulson, John R. Baker, James E. Deacon Jan 1979

Potential Use Of Hydroelectric Facilities For Manipulating The Fertility Of Lake Mead, Larry J. Paulson, John R. Baker, James E. Deacon

Publications (WR)

Analysis of historical nutrient data for Lake Mead indicates that the fertility of the reservoir has decreased which may be the cause for a corresponding decline in the largemouth bass population. However, it appears that fertility can be manipulated by altering the operation of the dam. The depletion of nutrients in the euphotic zone by phytoplankton and subsequent accumulation in the hypolimnion during summer and fall provide a natural nutrient gradient from which water of varying fertility can be drawn for discharge. This combined with alterations in the depth or seasonal pattern of discharge can possibly be used to enhance …


Effects Of Grazing On Desert Vegetation, B. E. Norton, D. J. Bermant Jan 1979

Effects Of Grazing On Desert Vegetation, B. E. Norton, D. J. Bermant

Memorandum

No abstract provided.


The Impact Of Seed Consumers In A Desert Ecosystem: An Integrated Approach, W. G. Whitford Jan 1979

The Impact Of Seed Consumers In A Desert Ecosystem: An Integrated Approach, W. G. Whitford

Memorandum

No abstract provided.


Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse Jan 1979

Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse

Memorandum

No abstract provided.


Clustar And Clustid: Programs For Hierarchical Cluster Analysis, K. A. Marshall, H. C. Romesburg Jan 1979

Clustar And Clustid: Programs For Hierarchical Cluster Analysis, K. A. Marshall, H. C. Romesburg

Memorandum

No abstract provided.


Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage Jan 1979

Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage

Memorandum

No abstract provided.


Tucson Basin Validation Site Report, J. L. Thames Jan 1979

Tucson Basin Validation Site Report, J. L. Thames

Memorandum

No abstract provided.


Rock Valley Validation Site Report, F. B. Turner Jan 1979

Rock Valley Validation Site Report, F. B. Turner

Memorandum

No abstract provided.


Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson Jan 1979

Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson

Memorandum

No abstract provided.


Comparison Of Biological Processes In Western Deserts, J. Skujins Jan 1979

Comparison Of Biological Processes In Western Deserts, J. Skujins

Memorandum

No abstract provided.


Interactions Of Winter Sheep Grazing And Small Mammal Populations, C. D. Jorgensen Jan 1979

Interactions Of Winter Sheep Grazing And Small Mammal Populations, C. D. Jorgensen

Memorandum

No abstract provided.


Plant Growth And Water Transfer Processes Under Desert Conditions, L. Gay, T. Sammis, D. D. Evans Jan 1979

Plant Growth And Water Transfer Processes Under Desert Conditions, L. Gay, T. Sammis, D. D. Evans

Memorandum

No abstract provided.


Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage Jan 1979

Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage

Memorandum

No abstract provided.


Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman Jan 1979

Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman

Memorandum

No abstract provided.


Nitrogen Cycling In Great Basin Desert Soils, J. Skujins, B. Klubek Jan 1979

Nitrogen Cycling In Great Basin Desert Soils, J. Skujins, B. Klubek

Memorandum

No abstract provided.


Plant Food Habits Of Rodents In Curlew Valley, E. L. Becker Ii, D. F. Balph, M. H. Balph Jan 1979

Plant Food Habits Of Rodents In Curlew Valley, E. L. Becker Ii, D. F. Balph, M. H. Balph

Memorandum

No abstract provided.


Jornada Validation Site Report, W. G. Whitford Jan 1979

Jornada Validation Site Report, W. G. Whitford

Memorandum

No abstract provided.


Seed-Eating Birds, H. R. Pulliam Jan 1979

Seed-Eating Birds, H. R. Pulliam

Memorandum

No abstract provided.


Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill Jan 1979

Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill

Memorandum

No abstract provided.


User's Manual For Desert2: A Desert Ecosystem Simulator Written In Ansi Fortran Iv, W. D. Valentine Jan 1979

User's Manual For Desert2: A Desert Ecosystem Simulator Written In Ansi Fortran Iv, W. D. Valentine

Memorandum

No abstract provided.


Deep Creek Validation Study Report, G. W. Minshall, C. Y. Manuel, R. W. Dunn, R. K. Pace, M. R. Mcsorley, D. A. Andrews Jan 1979

Deep Creek Validation Study Report, G. W. Minshall, C. Y. Manuel, R. W. Dunn, R. K. Pace, M. R. Mcsorley, D. A. Andrews

Memorandum

No abstract provided.


Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds Jan 1979

Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds

Memorandum

No abstract provided.


Cryptobiosis And Its Effect On Metabolism And Production Estimates Of Desert Nematodes, D. W. Freckman Jan 1979

Cryptobiosis And Its Effect On Metabolism And Production Estimates Of Desert Nematodes, D. W. Freckman

Memorandum

No abstract provided.


Impact Of Grazing On Foothill Vegetation, K. C. Hodgkinson, P. S. Johnson Jan 1979

Impact Of Grazing On Foothill Vegetation, K. C. Hodgkinson, P. S. Johnson

Memorandum

No abstract provided.