Agronomy and Crop Sciences Commons^™

Halo Blight Of Barley Confirmed In Western Australia, T N. Khan

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

Halo blight on barley has been confirmed in Western Australia for the first time.

What is it and how will it affect barley production in the future?

A New Tissue Test For Accurate Diagnosis Of Copper Deficiency In Cereals, J W. Gartrell, A. D. Robson, J. F. Loneragan

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

Copper deficiency in ceereals can now be accurately diagnosed using tissue analysis.

The Place For Annual Brome Grass, G W. Anderson

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

Grasses in the anual pastures of southern Australia are particularly important early in the growing season.

The main grass sown, has been annual rygrass, but concerns are emerging with 'annual ryegrass toxicity' and and 'in crop' competition.

This work looks at the role of annual brome grass in pastures.

The Influence Of Harvest Rate And Drying Time On Grain Drying And Storage Facility Selection, Thomas C. Bridges, Otto J. Loewer Jr., Douglas G. Overhults

Biosystems and Agricultural Engineering Faculty Publications

No abstract provided.

Determination Of Strategy For Harvesting Burley Tobacco, Yasuhiko Miyake, Larry G. Wells, George A. Duncan, Jimmie Rankin

Biosystems and Agricultural Engineering Faculty Publications

The decision-making process associated with the scheduling of burley tobacco harvesting operations was formulated as a multi-stage decision process, and solved using a procedure called dynamic programming. The solution of a stochastic dynamic programming model provides a set of optimal decision rules, that is, a strategy. When certain user-specified parameters are provided, the decision model provides information concerning the optimal date to start harvesting, the optimal number of hours to harvest on each day, the optimal date to introduce hired labor, and the optimal number of workers which should be hired.

The solution of the dynamic programming model makes it …

Nitrogen Fertilisers For Rape (Brassica Campestris And B Napus) And Wheat In Western Australia, M G. Mason

Technical Bulletins

Absolute yield increases tended to be greater for wheat than rape at 63 per cent of the nitrogen responsive sites, but percentage yield increases and rate of N for maximum yield tended to be greater for rape than for wheat. When average response curves over all trials were considered, there was little difference between the two crops in terms of percentage responsiveness and N rate for maximum yield in areas with less than 460 mm average rainfall, but in higher rainfall areas the response to N was higher.

1979 Phosphorus And Sulphur Interactions On Pastures. Sulphur Nutrition Of Pastures, J. S. Yeates, M. F. Clarke

Experimental Summaries - Plant Research

Contents: Phosphorus and sulphur interactions on pastures. Sulphur nutrition of pastures. (i) Phosphorus x sulphur x times of application on pastures 1979: 79AL2, 79BY1, 79KE3, 79KE4.

(ii) Sulphur status/soil tests on pastures: 79AL18, 79AL22, 79AL25, 79AL41, .79BY2, 79BY3, 79BY4, 79HA1, 79HA2, 79HA3, 79KE7, 79M020.

(iii) Time of application of sulphur to pastures: 79BU1,79KE6.

(iv) Phosphorus, sulphur and potassium fertilisers on pastures on deep leaching sands: 79AL1, 79KE2, 79MA2, 79MA6.

(v) Phosphorus x sulphur interaction trials 1978; 1979 treatments: 78A7, 78BA8, 73B4, 78BU3, 78C4, 78MA2, 78M08, 78N04.

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.

South West Sub-Clover Root Rot - 1976 Cultivation Experiments, M. J. Barbetti

Experimental Summaries - Plant Research

South-west sub. clover root rot 1976 cultivation experiments - Karridale 75BU11, Walpole 75DE12, and Narrikup 75AL36. South-west sub. clover root rot 1978 lime trial - Narrikup 77AL5. Fungicidal control of rapeseed damping-off - Mt Barker Research Station, 78MT12. White rust (Albugo) of rapeseed 1978 - Mt Barker Research Station - 78MT13, Albany - 78AL6, Bridgetown - 78BR3.

A. Inoculum Of The Take-All Fungus And Prediction Of Take-All. B. Hypovirulent Strains And Control Of Take-All., K Sivasithamparam

Experimental Summaries - Plant Research

CONTENTS A. Inoculum of the Take-all-Fungus and the Prediction of Take-all 1. Inoculum from grass and wheat residues. a. Trial at Reichstein's, Esperance. b. Trial at Wallace's, Esperance. 2. Inoculum size and take-all. a. Inoculum fraction of a Jerramungup soil. b. Interaction of inoculum size with soil temperature. 3. Effect of various fertilizer treatment on inoculum - 79LG25. 4. Time of sampling and inoculum. a. Newdegate. b. Kulin. c. Badgingarra. 5. Take-all and Hypovirulent strains a. Newdegate - 78LG30. b. Esperance - 79E14.

1. Sub Clover Root Rot Resistance 2. Clover Cultivar Evaluation- High Rainfall Areas, D J. Gillespie

Experimental Summaries - Plant Research

77BU1 Seed and plant data 1979 high rainfall areas, Karridale 77D1 Seed and plant data 1979 high rainfall areas, Denmark (Dry site) 77D4 Seed and plant data 1979 high rainfall areas, Denmark (Wet site) 77ES31 Seed and plant data 1979 Esperance region, Dalyup 77ES33 Seed and plant data 1979 Esperance region, Mt Howick 79MA9 Dry matter production spring 1979, Northcliffe 79W4 Dry matter production spring 1979, Wokalup Research Station

Wheat Potential Yield Trials - 79ka17 D. Hall, Beaufort River - 79wh32 Wongan Hills Research Station, R N. Weir, D Tennant, A. G. P. Brown, M. W. Perry

Experimental Summaries - Plant Research

COMMENTS 1. No insect problems experienced and broadleaf weeds effectively controlled by spraying. Septoria· leaf spot incidence insufficient to affect yields. 2. Little effect of time of planting on either total dry matter or grain yield. Crop received about 70% of the average May-October rainfall with a very dry September-October. Perhaps the distribution of rainfall allowed a similar pattern of water use, and total water use by each planting time. 3. There is probably a significant effect of Nitrogen regime on grain yield. Osmocote (N3) consistently yielded more than either single (N1) or repeated (N2) dressings of Agran 34:0. The …

Crop Varieties For 1979, Department Of Agriculture, Western Australia

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

New crop varieties recommended for 1979 include two wheats, Tincurrin and Warimba, Moore oats and blackleg resistant Westro rapeseed.

1979 Summary Of Experiments, T N. Khan

Experimental Summaries - Plant Research

79MT22 Mid season sown experiment, Mt Barker 79BA25 crop loss assessment trials, Badgingarra 79MT49 scoring system for leaf diseases, Mt Barker 79BA24 Inter-plot interference at various distances in Net Blotch, Badginarra Research Station 79WH17 Inter-plot interference at various distances in Net Blotch, Wongan Hills Research Station 79BA21 Inter-plot interference at various distances in Barley Scald, Badgingarra Research Station 79MT23 Inter-plot interference at various distances in Barley Scald, Mt Barker Research Station 79BA53 Scald nursery, Badgingarra 79BA54 Net Blotch nursery, Badgingarra 79WH52 Net Blotch nursery, Wongan Hills 79BA20 Crop loss assessment, Badgingarra Research Station 79BA22 Evaluating differences in field reaction of …

Low Cost Cereal Herbicides - Pasture Manipulation - Annual Ryegrass Toxicity - Herbicides For Direct Drilling - Hoegrass Application Methods - Annual Ryegrass Herbicides, J E. Holmes

Experimental Summaries - Plant Research

79N46 Possible cereal herbicides – low cost mixtures, Tincurrin 79MO52 Possible cereal herbicides – low cost mixtures, Bolgart 79KA46 Possible cereal herbicides – low cost mixtures, Katanning 79NA39 Pasture manipulation – barley grass control 79NO28 Pasture manipulation, Goomalling 79MO50 Pasture manipulation – grass reduction – examination of known systems, Moora 79AR47 Pasture manipulation – grass control and herbicide residues, South Sterlings 79BA57 Pasture manipulation – rates of herbicides, Badgingarra Research Station 79A31 Pasture manipulation – grass reduction, Avondale Research Station 79KA47 Spraytop – Graze – control of annual ryegrass toxicity, Katanning 79BA56 Herbicides for direct drilling, Badgingarra Research Station 79A30 …

1979 Summary Of Experiments - Legume Seed Inoculation, D L. Chatel

Experimental Summaries - Plant Research

79NA4 The effect of Rogor on the response of field peas to inoculation, Narrogin 79ME3A The response of Nungarin subterranean clover to inoculation, Bodallin 79ME3B The response of Nungarin subterranean clover to inoculation, Gabbin 79ME3C The response of Nungarin subterranean clover to inoculation, Bodallin 79GE9 The response of Nungarin subterranean clover to inoculation, Tenindewa 79GE8 The performance of different strains of Rhizobium meliloti on different medics, Tenindewa 79GE10 The response of Nungarin subterranean clover, Swan medic and Gamenya wheat to lime and molybdenum (all hosts) and inoculation (legumes) on an acid soil, Pindar 79M07 The response of subterranean clover and …

Summary Of Experimental Results 1979 - Annual Rye Grass Toxicity, D L. Chatel

Experimental Summaries - Plant Research

79KA15 The susceptibility of grasses to yellow slime disease

79KA16 The effect of gall burial on gall and slime production by annual rye grass sown into land with a history of ryegrass toxicity The effect of bacterial galls on development of slime and galls on ryegrass inoculated with nematode galls

Symptoms And Treatment Of Copper Deficiency Of Wheat, J W. Gartrell, R. F. Brennan, A. D. Robson

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

Copper deficiency in wheat is still common but may not be easily noticed.

Summary Of 1979 Field Experiments, M L. Poole

Experimental Summaries - Plant Research

79WH50: Effect of time of planting x cultural systems x herbicides on wheat yields - Wongan Hills Research Station. 79M34: Effect of time of planting x cultural systems x herbicides on wheat yields – Merredin Research Station. 79C31: Effect of time of planting x cultural systems x herbicides on wheat yields - Chapman Research Station. 79WH58: Rates of ryegrass x rates of nitrogen on wheat Yield. 79WH57: Rates of CCC and rates of nitrogen on yield of Wheat.

Twenty-One Hints For Savings Of Seeding Time, Department Of Agriculture, Western Australia

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

The efficiency of machinery and labour during seeding operations has been studied by the Kondinin and Districts Farm Improvement Group and the Department of Agriculture.

The following specific hints were suggested.

Getting The Best From Tractor Tyres, J Quealy

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

The amount of pull a tractor develops depends largely on tyre efficiency and so with so many tyre size options for the one tractor model it is very easy to make the wrong decision on tyre fitment.

Tyre efficiency varies with tractor weight, soil conditions, inflation pressure and tyre size.

Hers we look at some of these factors and how changing them may affect efficiency.

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, …

1979 Pasture Species Investigations - High Rainfall Area, D A. Nicholas

Experimental Summaries - Plant Research

Contents. 1. Clover cultivar grazing trial - 68NA1 - N. Bannister. 2. Perennial versus annual grass grazing trial - 72MN5 - Manjimup Research Station. 3. Pasture types demonstration - 72D1 - Denmark Agricultural High School. 4. 76MT3 - Trikkala evaluation trial - Mt Barker Research Station - see also report of D.J. Gillespie and separate progress report. 5. Clover cultivar evaluation trials: 77AL22 - Wellstead. 77BU10 - Karridale. 77D5 - Denmark Research Station. 78BR16 - Darradup. 78BU15 - Jindong. 78DE1 - Tingledale. 78MN5 - Manjimup Research Station. 79BY6 - Waterloo. 79ES35 - North Merivale. 79ES36 - Mount Merivale. 79MA12 - …

Trace Element Nutrition., J W. Gartrell, R F. Brennan

Experimental Summaries - Plant Research

Long term copper trial ( 28years ), 66N14.

Conclusions

Declared Plant Control & Total Vegetation Control, P A. Rutherford

Experimental Summaries - Plant Research

(A) Declared plant control. 1. Arum lily (Zantedeschia aethiopica). Chemical control of Arum Lily (Zantedeschia aethiopica). Properties: Prevelly Park, Margaret River (A), Wonnerup (B). (A) dense Arum Lily under shade from trees in Park reserve. (B) scattered Lily in clover pasture grazed by dairy cattle. 2. Blackberry (Rubus spp). 79AI60 - Evaluation of Roundup for blackberry control. Property - R. Wolfe, Bornholm. Herbicides for blackberry control. Property – G. Wright, Kent River. 79AL62 - Evaluations of “Krenite” for blackberry control. Property R.G. Ebbott, Bow Bridge. 3. Pennyroyal (Mentha pulegium) 79AP64 - Herbicide screening on Pennyroyal (Mentha pulegium). D. Wells, Denmark. …

Calibration Of Boom Sprays, J R. Peirce

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

Boom sprays have become increasingly common on Western Australian farms, allowing farmers to take advantage of modern herbicided.

Most boom sprays used on farms have 50 cm nozzle spacings and require calibrating regularily to ensure accurate herbicide application.

By following these steps, the boom will deliver accurate amounts of herbicide.

Cereal, Pasture Legume And Water Supply Prospects At Forrestania : Results Of Experimental Work East Of Hyden, Western Australia, T E. Mcdowell, M G. Mason, J W. Gartrell, William J. Toms, I A F Laing

Technical Bulletins

The agricultural potential of the Forrestania area appears at least equal to that of much of the settled eastern wheatbelt. The scrubplain soils of the Forrestania area have an average yield potential of at least 1 000 kg/ha wheat and carrying capacity of 1.8 to 3.7 sheep per hectare on improved pastures. The use of clover ley rotations would maintain these levels of potential yield. Partial crop failures caused by adverse seasonal conditions could be expected 10 years in every 100.

Relationship Of Weed Control And Soil Ph To No-Tillage Corn Yields, J. J. Kells, C. E. Rieck, Robert L. Blevins, Charles H. Slack

Agronomy Notes

Atrazine and simazine are used for selective control of a broad spectrum of weeds in corn. Over 80% of the U.S. corn production is treated with one or the other of these two s-triazine herbicides. In Kentucky they are used annually on over 800,000 acres of corn, including over 200,000 acres of no-tillage corn. When added to the soil these compounds are ultimately degraded to non-phytotoxic compounds. The rate of degradation is dependent upon the physical, chemical, and biological properties of the soil. Although atrazine and simazine are chemically similar, simazine is considered to degrade slightly slower than atrazine after …

An Improved Rapeseed Variety : Wesway, Department Of Agriculture, Western Australia

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

Wesway, a new blackleg-resistant variety of rapeseed, has been released by the Department of Agriculture.

Seed of Wesway has been released to growerin the west Midlands, Great Southern and south coastal regions.

Fumigating A Farm To Control Grain Insects, J H. Moulden

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

During the past year, two major projects for control of grain insects were organised on Western Australian farms. Both excercises aimed to eradicate grain pests which would have seriously threatened grain exports if they had become established.

The fumigation was done jointly by the Entemology branch of the Department of Agriculture, and the Agricultural Protection Board.