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Articles 38341 - 38370 of 39436

Full-Text Articles in Life Sciences

Plant Growth And Water Transfer Interactive Processes Under Desert Conditions, D. D. Evans, T. W. Sammis Jan 1975

Plant Growth And Water Transfer Interactive Processes Under Desert Conditions, D. D. Evans, T. W. Sammis

Memorandum

No abstract provided.


Effects Of Grazing On Desert Vegetation, B. E. Norton Jan 1975

Effects Of Grazing On Desert Vegetation, B. E. Norton

Memorandum

No abstract provided.


Tucson Basin Validation Site Report, J. L. Thames Jan 1975

Tucson Basin Validation Site Report, J. L. Thames

Memorandum

No abstract provided.


Rock Valley Validation Site Report, F. B. Turner Jan 1975

Rock Valley Validation Site Report, F. B. Turner

Memorandum

No abstract provided.


Curlew Valley Validation Site Report, R. S. Shinn, R. D. Anderson, M. Merritt, W. Osborne, J. A. Macmahon Jan 1975

Curlew Valley Validation Site Report, R. S. Shinn, R. D. Anderson, M. Merritt, W. Osborne, J. A. Macmahon

Memorandum

No abstract provided.


Nitrogen And Phosphorus Constraints On Primary Production In The Great Basin Desert, J. J. Jurinak, D. W. James, R. L. Evans Jan 1975

Nitrogen And Phosphorus Constraints On Primary Production In The Great Basin Desert, J. J. Jurinak, D. W. James, R. L. Evans

Memorandum

No abstract provided.


Plant Response To Insect Herbivory, B. E. Norton, L. B. Smith Jan 1975

Plant Response To Insect Herbivory, B. E. Norton, L. B. Smith

Memorandum

No abstract provided.


Ecology Of Cool Desert Annuals, L. G. Klikoff, D. C. Freeman, N. Negus Jan 1975

Ecology Of Cool Desert Annuals, L. G. Klikoff, D. C. Freeman, N. Negus

Memorandum

No abstract provided.


Phenology And Function Of Sonoran Desert Annuals In Relation To Environmental Changes, D. T. Patten Jan 1975

Phenology And Function Of Sonoran Desert Annuals In Relation To Environmental Changes, D. T. Patten

Memorandum

No abstract provided.


Effects Of Temperature And Moisture On Productivity Of Oryzopsis Hymenoides, L. C. Pearson Jan 1975

Effects Of Temperature And Moisture On Productivity Of Oryzopsis Hymenoides, L. C. Pearson

Memorandum

No abstract provided.


Interaction Between A Fossorial Rodent (The Pocket Gopher, Thomomys Bottae) And A Desert Plant Community, R. E. Dingman, L. Byers Jan 1975

Interaction Between A Fossorial Rodent (The Pocket Gopher, Thomomys Bottae) And A Desert Plant Community, R. E. Dingman, L. Byers

Memorandum

No abstract provided.


The Impact Of Seed Consumers In A Desert Ecosystem, W. G. Whitford Jan 1975

The Impact Of Seed Consumers In A Desert Ecosystem, W. G. Whitford

Memorandum

No abstract provided.


The Influence Of Digging Rodents On Primary Production In Rock Valley, L. Soholt, M. R. Griffin, L. Byers Jan 1975

The Influence Of Digging Rodents On Primary Production In Rock Valley, L. Soholt, M. R. Griffin, L. Byers

Memorandum

No abstract provided.


Effect Of Density On The Population Dynamics Of Perognathus Formosus And Its Relationships Within A Desert Ecosystem, R. M. Chew Jan 1975

Effect Of Density On The Population Dynamics Of Perognathus Formosus And Its Relationships Within A Desert Ecosystem, R. M. Chew

Memorandum

No abstract provided.


Factors Affecting Seed Reserves In The Soil Of A Desert Ecosystem, R. M. Chew, J. F. Nelson Jan 1975

Factors Affecting Seed Reserves In The Soil Of A Desert Ecosystem, R. M. Chew, J. F. Nelson

Memorandum

No abstract provided.


The Functional Relationships Among The Organisms Comprising Detritus-Based Foodchains At The Rock Valley Site, J. F. Mcbrayer, G. E. Mamolito, P. J. Franco Jan 1975

The Functional Relationships Among The Organisms Comprising Detritus-Based Foodchains At The Rock Valley Site, J. F. Mcbrayer, G. E. Mamolito, P. J. Franco

Memorandum

No abstract provided.


Studies On Wood Borers, Girdlers And Seed Predators Of Mesquite, W. G. Whitford, R. K. Johnson, D. J. Depree Jan 1975

Studies On Wood Borers, Girdlers And Seed Predators Of Mesquite, W. G. Whitford, R. K. Johnson, D. J. Depree

Memorandum

No abstract provided.


Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, A. K. Temte Jan 1975

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, A. K. Temte

Memorandum

No abstract provided.


Classification And Quantification Of Invertebrate Activity And The Role Of Invertebrates In Nitrogen Processing In Plants, Litter And Soil In Curlew Valley, P. R. Sferra Jan 1975

Classification And Quantification Of Invertebrate Activity And The Role Of Invertebrates In Nitrogen Processing In Plants, Litter And Soil In Curlew Valley, P. R. Sferra

Memorandum

No abstract provided.


Nitrogen Retention In Cool Desert Soils, J. Skujins Jan 1975

Nitrogen Retention In Cool Desert Soils, J. Skujins

Memorandum

No abstract provided.


Nitrogen Dynamics In Stands Dominated By Some Major Cool Desert Shrubs Iv. Inhibition By Plant Litter And Limiting Factors Of Several Processes, J. Skujins Jan 1975

Nitrogen Dynamics In Stands Dominated By Some Major Cool Desert Shrubs Iv. Inhibition By Plant Litter And Limiting Factors Of Several Processes, J. Skujins

Memorandum

No abstract provided.


Prediction Of Plant-, Soil- And Air-Temperature On A Microscale In The Desert, L. R. Martinez, I. Dirmhirn Jan 1975

Prediction Of Plant-, Soil- And Air-Temperature On A Microscale In The Desert, L. R. Martinez, I. Dirmhirn

Memorandum

No abstract provided.


Effect Of Soil Water Potential On Soil Moisture Absorption, Transpiration Rate, Plant Water Potential And Growth For Artemisia Tridentata, G. S. Campbell, G. S. Harris Jan 1975

Effect Of Soil Water Potential On Soil Moisture Absorption, Transpiration Rate, Plant Water Potential And Growth For Artemisia Tridentata, G. S. Campbell, G. S. Harris

Memorandum

No abstract provided.


Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks Jan 1975

Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks

Memorandum

No abstract provided.


1975 Phosphorus And Sulphur Sources Trials, M D. Bolland Jan 1975

1975 Phosphorus And Sulphur Sources Trials, M D. Bolland

Experimental Summaries - Plant Research

1. Sulphur sources trials (a) Newdegate Gypsum Trials: Yarloop - 75YA3, Bridgetown - 75BR10, Busselton - 75BU6, Alexandria Bridge - 75BU7. (b) Gyplap - FeS04 Trial: McAlinden - 75BY4. 2. Phosphorus source trials: E. Chittering - 75NO7A E. Chittering - 75NO7B


1975 Fallow Re-Assessment And Soil Physical Data Accumulation, D Tennant Jan 1975

1975 Fallow Re-Assessment And Soil Physical Data Accumulation, D Tennant

Experimental Summaries - Plant Research

This report summarises progress and data available for the following investigations. 1. Fallow Re-assessment - 72M29. 2. Soil Physical Data Accumulation. (a) Evaluation of methods of bulk density measurement. (b) Water holding capacities and mechanical analyses of wheatbelt soils. (c) Water holding capacities of metropolitan sands. TABLE 3 Water holding capacities (1/10 - 15 Atmosphere water contents) of metropolitan sands (mm of water). Bulk density of 1.6 assumed. 1. Medina Research Station. 2. Morley White Sand. 3. Karrakatta Sand. 4. Bassendean Sand. 5. South Perth Lawn. 6. South Perth Scrub. 7. Underwood Avenue Research Station. 8. Floreat Park Sand. 9. …


1974 Field Experiments On Legume Seed Inoculation, D. L. Chatel Jan 1975

1974 Field Experiments On Legume Seed Inoculation, D. L. Chatel

Experimental Summaries - Plant Research

The response of sweet lupins to inoculation in Western Australia Before proceeding with details of the six lupin inoculation experiments conducted in 1974 the following comments are presented as a brief summary of the work so far done on lupin inoculation. Thirty nine inoculation experiments with sweet lupins (mainly Lupinus angustifolius var. Uniwhite, Uniharvest and Unicrop have been conducted in South-Western Australia since 1970. They have been drill-sown under farmer conditions and they have been aimed at finding where it is necessary to inoculate and the best method of inoculating seed. Of the 39 trials, 36 gave better nodulation following …


Fruit In W.A., Department Of Agriculture And Food, Western Australia Jan 1975

Fruit In W.A., Department Of Agriculture And Food, Western Australia

Bulletins - 3000 - 3999

The main fruit growing districts of Western Australia are in the Mediterranean climate areas of the south-west. Apples, pears, stonefruit, citrus and vines are grown on a commercial basis. Figs, mulberries and olives are also grown, but not in big commercial quantities.


1975 Nitrogenous Fertilisers For Cereals - Trials With Wheat, Oats And Barley, M. G. Mason Jan 1975

1975 Nitrogenous Fertilisers For Cereals - Trials With Wheat, Oats And Barley, M. G. Mason

Experimental Summaries - Plant Research

Rates of nitrogen on wheat - soil test - Fifty-one sites were selected and soil sampled during February- March. All these proposed trials consisted of four replications and these reps were soil sampled separately. In each rep. 20 samples were taken to 10cm depth with pogo stick samplers. In addition, from three holes at random across each trial bulk samples were obtained from the 0-15, 15-30 and 30-45 cm soil intervals These soil samples were air dried (if not already dry) and sieved to remove > 2 mm fraction (gravel). Portions of these < 2mm fractions from the 0-10cm samples were sent to the Government Chemical Laboratories and to C.S.B.P. & Farmers Ltd. At C.S.B.P. analyses were carried out to determine P and K content and the C.S.B.P. soil nitrogen test was also carried out on them. This measures nitrate content before and after incubation with moist soil at 32c for seven days. A measurement was also made after 14 days. At Government Chemical Laboratories analyses were to be carried for Organic carbon and for a number of nitrogen fractions, including Total Nitrogen, MH4 + NO3 Nitrogen and several incubation techniques. These were also to be determined on the profile samples, which were also to be subject to the following analyses: a) Mechanical Analysis b) pH (in water) c) Cation Exchange Capacity d) Moisture Holding Capacity All of these trials were planted except for one at Jerramungup, where the marker pegs were ploughed out by the farmer. Vegetative cuts were then taken during the August - September period on 46 of the remaining 50 sites. Three of the other four sites were abandoned because of severe waterlogging (Neridup), extreme weediness (Nugadong) or due to poor plant survival (possibly due to webworm) combined with weeds (Mallalying). The trial at Wannamal was sown to oats, by the farmer. The nitrogen treatments were still applied and the trial was retained but not sampled for dry matter production. These samples were to be analysed for nitrogen content. Dry matter production and grain yields are set out in the following tables. 61M11, 75A1. 75A2, 75A3, 75AL1, 75AL2, 75BA2, 75BA3, 75BR1, 75BR2, 75C1, 75C2, 75C3, 75E2, 75E3, 75ES1, 75ES2, 75ES4, 75GE1, 75GE2, 75GE3, 75JE1, 5JE2, 75KA1, 75KA2, 75LG1, 75LG2, 75LG3, 75M2, 75M3,75M4, 75ME1, 75ME2, 75ME3, 75MO1, 75MO2, 75MO4, 75MT2, 75MT3, 75N1, 75N2, 75N3, 75NA1, 75NA3. 75NA4, 75NO2, 75NO3, 75SG1, 75SG2, 75TS2, 75TS3, 75TS4, 75WH4, 75WH5, 75WH6, 75WH7.


The Banana Industry At Carnarvon, John Roger Burt Jan 1975

The Banana Industry At Carnarvon, John Roger Burt

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

In viewing the semi-arid conditions of the West Gascoyne, visitors are surprised to see a thriving banana industry at the mouth of the Gascoyne River, 930 kilometres north of Perth. The natural vegetation in the plantation area consists mainly of stunted gums, low acacia scrub and salt bush.

Despite the adverse climatic conditions, the average yields of Carnarvon bananas are double those of banana areas in other states.