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Articles 3901 - 3930 of 4158
Full-Text Articles in Entire DC Network
Intsormil Annual Report 1987, John M. Yohe, Timothy T. Schilling
Intsormil Annual Report 1987, John M. Yohe, Timothy T. Schilling
INTSORMIL Impacts and Bulletins
The Sorghum/Millet CRSP was initiated on July 1, 1979. This annual report covers the activities for program Year 8. Eight years of experience have reaffirmed the need for this type of research program aimed at relieving the constraints to improved sustainable sorghum/millet production in developing countries. The emphasis by the CRSP on development of collaborative linkages with national sorghum/millet research programs has been unique. Significant contributions have been made toward resolving constraint problems and enhancing the national program capability by strengthening its human resource base as well as the national institutional capability to conduct collaborative research. Thus, the CRSPs present …
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87KA52
The control of broadleaf weeds in leguminous pasture is of major concern because of the ability of these weeds to compete strongly with the leguminous plants. The presence of broadleaf weeds in pasture reduces the pastures nutritional value as well as total nitrogen fixation. There are many herbicides which are available to control broadleaf weeds, but most of these are registered for use in cereals. The amount of tolerance that leguminous pasture plants show to many of these herbicides and herbicide mixes is not known.
The experiments were designed to screen a large number of herbicides for legume …
Evaluation Of Risk Factors Leading To Soil Destabilisation On The South Coastal Sandplain Of Western Australia, R V R Gwynn, P A. Findlater, J R. Edwards
Evaluation Of Risk Factors Leading To Soil Destabilisation On The South Coastal Sandplain Of Western Australia, R V R Gwynn, P A. Findlater, J R. Edwards
Resource management technical reports
The problems of wind erosion in part of the south coast of Western Australian sandplain area were described previously (Gorddard et al, 1981) with 7.3 per cent of cleared and 18.3 per cent of the cropped area showing evidence of sand blasting. Department of Agriculture trials have shown that the loss of the top four millimetres of top soil from pastured paddocks can reduce following crop yields by up to 20 per cent (Marsh and Carter, 1983). Animal production problems associated with wind erosion of soils have not been quantified, but a number of problems such as reduced carrying capacity …
Broadacre Pest Control After Ddt, P J. Michael
Broadacre Pest Control After Ddt, P J. Michael
Journal of the Department of Agriculture, Western Australia, Series 4
DDT may no longer be applied to broadacre crops grown in Western Australia. It is being replaced by other more effective chemicals and with new methods of pest control. DDT was the most effective chemical for the control of several major broadacre pests in this State and farmers may well wonder why this change was necessary and how they will manage without DDT.
Effect Of Agronomic Practices On Wheat Protein Levels, M G. Mason
Effect Of Agronomic Practices On Wheat Protein Levels, M G. Mason
Journal of the Department of Agriculture, Western Australia, Series 4
High grain protein levels are preferred for many end-uses of wheat. However, there has been little or no incentive for farmers to use practices which would increase protein levels, because wheat payments are made without a price differential for proteinlevel, except where wheat could qualify for the Australian Hard grade.
Harvest Index Of Lupins, Low Tillering Cereals And Maturity By Sowing Date In Cereals., R. J. Delane, J. C. Mathews, J. A. Bright
Harvest Index Of Lupins, Low Tillering Cereals And Maturity By Sowing Date In Cereals., R. J. Delane, J. C. Mathews, J. A. Bright
Experimental Summaries - Plant Research
Trial 87GE21
Effect of plant density on branching, pod setting and yield development of lupins.
Location: Geraldton
To determine the influence of plant density and between-plant variability in vegetative growth on the branching, pod setting and yield development of lupins
Trial 87GE9
Chemicals to control vegetative growth and improve pod set in lupins.
Location: West Binnu
To examine the effect of a number of growth regulating chemicals on the branching, pod setting and yield of lupins under conditions favoring high biomass production.
Trial 87GE19
Chemicals to control vegetative growth and improve pod set in lupins.
Location: Nabawa
To examine the …
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Experimental Summaries - Plant Research
Project title: Evaluation of existing diagnostic procedures for the recommendation of trace element fertilizers.
Aim: To compare the accuracy and reliability of a range of tissue and soil tests being variously promoted for use to farmers for the diagnosis and prognosis of zinc and copper deficiencies in wheat crops on Western Australian farms.
Trial 87N23
Nitrogen rates on the main copper plots of the long term copper residual trial at Newdegate Research Station.
Location: Newdegate Research Station
To determine the effects of rates of nitrogen on the copper status of plants.
Trial 87LG33
Effects of rates of nitrogen on the …
Nitrogenous Fertilizers For Cereals Results From 1987 Trials, M G. Mason
Nitrogenous Fertilizers For Cereals Results From 1987 Trials, M G. Mason
Experimental Summaries - Plant Research
Effect of stubble treatment on nitrogen fertilizer requirement. 78C3
Effect of Stubble Treatment on Nitrogen Fertilizer Requirement 78WH3
Effect of Stubble Treatment on Nitrogen Fertilizer Requirement 78M2
Nitrogen Rate on Continuous Wheat with Varying Levels of Retained Stubble *84WH46
Rates of Nitrogen on Continuous Wheat on Heavier Land 87C1
Rates of Nitrogen on Wheat on Heavy Land *87M04
Nitrification of Sources of Nitrogen on Slightly Acid to Neutral Soil 87BA3
Nitrification of Sources of Nitrogen on Medium Soil 87A1
Nitrification of Sources of Nitrogen on Very Acid Soils 87M3
Nitrification of Sources of Nitrogen on Moderately Acid Soil 87WH1
Rate …
Phosphorus Levels And Disease On Lupins, J W. Bowden
Phosphorus Levels And Disease On Lupins, J W. Bowden
Experimental Summaries - Plant Research
Trial 87LG39 (81LG29) 87ME62
Location: Pingaring.
It has been suggested that high levels of phosphorus application to lupins can reduce the impact of leaf and root diseases. Two old rotation trials provided a range of disease burdens, across which phosphate rates on lupins were applied. Disease scores, vegetative yields, phosphorus concentration and seed yields were measured.
(Details in Mark Sweetingham's report)
Residual Value Of Phosphate Fertilizers., M D A Bolland, M Baker, C. H. Phillips, D. Proudmore
Residual Value Of Phosphate Fertilizers., M D A Bolland, M Baker, C. H. Phillips, D. Proudmore
Experimental Summaries - Plant Research
Trial 84M63
Residual value of phosphate fertilizers.
Location: South Carrabin Block of Merredin Research Station.
4th successive crop on new land. Trial has shown that the effectiveness of the different types of rock phosphate were about the fifth to one tenth as effective as the fresh (triple) superphosphate applied in 1984. The effectiveness of the superphosphate, decreased by 60 between year 1 and 2, and by a further 10-15% by 1987. This experiment will continue as pasture for 1988 and 1989, and will be re-cropped in 1990. The experiment is also assessing soil testing for P. but soil test data …
Eastern Wheatbelt Nutrition Studies, W Porter, S Carr
Eastern Wheatbelt Nutrition Studies, W Porter, S Carr
Experimental Summaries - Plant Research
To determine the effectiveness of foliar applied phosphate relative to soil applied phosphorus.
To compare the effectiveness of the number of times of application of foliar phosphorus.
87M81, 87ME106
Peanuts In The Ord, D L. Mcneil, D. W. Bennett
Peanuts In The Ord, D L. Mcneil, D. W. Bennett
Journal of the Department of Agriculture, Western Australia, Series 4
The peanut industry on the Ord River Irrigation Area is expected to gross about $1.9 million at the end of the decade, a tidy return for an industry that only started truly commercial plantings some six yesrs ago.
At present the Ord River Irrigation Area produces about 2.5 per cent of Australia's total production, but it hopes to increase this to 7 per cent. High yields and plantings on non-staining soils make peanuts one of the most succesful crops grown on the Ord.
Barley Agronomy., K. J. Young
Barley Agronomy., K. J. Young
Experimental Summaries - Plant Research
Trial 87E6, 87MT45, 87SG11, 87ES8
Locations: Esperance Downs Research Station, Mount Barker Research Station, Salmon Gums Research Station, Melijinup Field Station,
Barley variety x time of planting
To study phenological development and its effect on yield in a range of barley cultivars at four planting dates.
Trial 87E42
Aphicide toxicology x barley variety.
Location: EDRS
To measure the effect of disulfoton (Disyston *R) applied as granules at seeding on barley, to determine if there is any phytotoxicity.
Trial 87ES40, 87E32
Barley variety x cereal aphids.
Location: Malijinup Field Station, Esperance Downs Research Station
To study the development of cereal aphids …
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Experimental Summaries - Plant Research
Contents
A. Crop establishment methods for lupin disease management
1. Pleiochaeta root rot
1.1 Depth of sowing
87LG32, 87LG36, 87ME60, 87ME75
1.2 Cultivation and sowing depth
87WH47, 87NO77, 87M54
1.3 Seeding machinery and sowing depth
2. Brown leaf spot/Pleiochaeta root rot
Phosphorus nutrition and crop rotation
87ME62, 87LG39
3. Rhizoctonia hypocotyl rot
Fungicide seed treatment and sowing depth
87BA25
4. Rhizoctonia root rot
4.1 Cultivation and sowing depth
87NO74
4.2 Fungicide seed treatment
87NO78
B. Fungicide drench trials to determine casual organisms of root/hypocotyl rot 87NO75, 87NO76.
Division S-4-Soil Fertility And Plant Nutrition: Recovery Of Fertilizer Nitrogen By Wheat As Affected By Fallow Method, J. F. Power, Wallace Wilhelm, John W. Doran
Division S-4-Soil Fertility And Plant Nutrition: Recovery Of Fertilizer Nitrogen By Wheat As Affected By Fallow Method, J. F. Power, Wallace Wilhelm, John W. Doran
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The fate of fertilizer N applied to crops is of both environmental and economic concern. To follow fertilizer N recovery in western Nebraska, depleted-15N NH4NO3 was surface broadcast in April on winter wheat (Triticum aestivum L.) growing on plots fallowed the previous year by plowing, subtillage, and no-till. Quantities of labeled N taken up by the growing crop, in the upper 100 mm of soil as inorganic N, and in both visible and partially decomposed crop residues, were followed on two sets of plots through the crop-fallow-crop sequence (approximately 117 weeks). About 16 to …
A Review Of Deep Tillage Research In Western Australia, M W. Perry
A Review Of Deep Tillage Research In Western Australia, M W. Perry
Division of Plant Research : Technical Report Series
A history of deep tillage in Western Australia, R.J. Jarvis. Biology of root growth in cereals, M.W. Perry. Physics of soil compaction and root grow thin compacted media, A.P. Hamblin. Effects of deep tillage on root growth and wateruse of wheat and lupins, D. Tennant. Nutrition or water - why the response to ripping, W.J. Bowden. Crop response to deep tillage, R.J. Jarvis. Response of crops and pastures to deep tillage, C. Henderson. Soil compaction, deep tillage and root disease, J. Wilson. Deep tillage in farming systems: timing of deep tillage and interactions with rotation and conventional tillage practice, J. …
1986 Update Of Agronomic And Animal Performance Of Different Tall Fescue Varieties, Paul B. Burrus Ii, Robert C. Buckner, James A. Boling, Lowell P. Bush, N. Gay, R. W. Hemken, Garry D. Lacefield, J. Kenneth Evans, M. R. Siegel
1986 Update Of Agronomic And Animal Performance Of Different Tall Fescue Varieties, Paul B. Burrus Ii, Robert C. Buckner, James A. Boling, Lowell P. Bush, N. Gay, R. W. Hemken, Garry D. Lacefield, J. Kenneth Evans, M. R. Siegel
Agronomy Notes
The objective of the tall fescue breeding program at the University of Kentucky is the development of varieties characterized by superior nutritive value (including reduced levels of perloline and loline alkaloids), minimal infestation of the fungal endophyte, Acremonium coenophialum), higher palatability, improved disease resistance, and wider adaptation through the derivation of intergeneric and interspecific hybrids of ryegrass and tall fescue species. Kentucky 31, Kenwell, and Kenhy were varieties released from this breeding program. Johnstone tall fescue, developed cooperatively by the Kentucky Agricultural Experiment Station and USDA-ARS, is the most recently released variety. It is characterized as having low levels of …
Phosphorus Nutrition, M Da Bolland
Phosphorus Nutrition, M Da Bolland
Experimental Summaries - Plant Research
76WH10, 77WH2, 77MT2, Phosphorus sources trial.
84NO69, 84E31, 84M63, Residual value of phosphate fertilisers.
86M1, Residual value of superphosphates for lupins and wheat grown in a 1-year lupin: 1-year wheat rotation.
85NO63, 85KA79, Assessment of different soil and plant tissue methods for determining the phosphorus requirement of several crop and pasture species.
85KA78, Assessment of different soil and plant tissue methods for determining the P requirements of crop and pasture species.
86N01, Residual value of superphosphate.
85BA34, Residual value of superphosphate for lupins, wheat and barley.
85BA35, Residual value of superphosphate for lupins:oat:wheat rotation
Tissue Testing Program 1986, R F. Brennan
Tissue Testing Program 1986, R F. Brennan
Experimental Summaries - Plant Research
Rates of Nitrogen on the long term copper trial at N.R.S., 86N36. Effects of Nitrogen on the copper and zinc status of wheat, 86LG32, 86LG33. Residual value of copper, zinc and sulphur with DAP under continuous cropping, 86LG34. Copper sprays on wheat, 86LG30. Trace element, nutrition of lupins, 67E8 and 67E9. Effects of rates of nitrogen on copper and zinc status of wheat, 86E43 and 86E44. Residual value of nitrogen on copper and zinc status of wheat, 86JE41. Rates of Nitrogen on the zinc status of wheat, 86JE42. Residual value of zinc using DAP, 83ES35. Residual value of Mo for …
Studies On The Effects Of Nutrition And Tillage On Cereal Root Diseases, R F. Brennan
Studies On The Effects Of Nutrition And Tillage On Cereal Root Diseases, R F. Brennan
Experimental Summaries - Plant Research
Take-all and manganese / ammonium interaction, 84E1.
Split applications of nitrogen and take-all, 84E2.
Take-all and manganese / ammonium interaction, 84LG2.
Micronutrients (Cu, Zn) and Take-all.
Nitrogen and phosphorus rates and Take-all, 83ES42.
Nitrogen and phosphorus rates and Take-all, 83ES43.
Nitrogen and phosphorus rates and Take-all, 83ES41.
Herbicide Tolerance Of Recommended Cereal Varieties, D. Bowran, R. Watson
Herbicide Tolerance Of Recommended Cereal Varieties, D. Bowran, R. Watson
Experimental Summaries - Plant Research
Herbicide tolerance of recommended cereal varieties Barley response to Glean, 86 GE 52, 86 GE 56, 86N0107, 86N0112, 86KA74, 86KA78. Tolerance of lupins to selected broadleaf herbicides, 86 GE 59, 86 GE 49. Herbicide tolerance of recommended cereal varieties, 86ME98. Herbicide tolerance of recommended cereal varieties effect of non-phenoxy herbicides on phenoxy sensitive wheat varieties, 86A12, 86A13. Herbicide tolerance of recommended cereal varieties barley response to metribuzin, 86LG37, 86LG59. Tolerance of recommended pea varieties to herbicides, 86NO111. Stirling barley tolerance to Glean and Ally, 8 6N0119. Effect of plant-back time on response to Till-master, 86WH48. Tolerance of lupins to selected …
Research Into Lupin Root Diseases, M W. Sweetingham
Research Into Lupin Root Diseases, M W. Sweetingham
Journal of the Department of Agriculture, Western Australia, Series 4
increased yield from wheat after lupins, obtained without the need for applied nitrogen, has led many farmers to adopt a 1:1 wheat-lupin rotation. One of the advantages of lupins is the cleaning effect they have by reducing wheat diseases such as septoria and yellow leaf spot and root diseases, in particular take-all.
Before the present research projext started, little was known about lupin root diseases, or what effect lupins grown in close rotation with wheat might have on the build-up of root disease of lupins.
Lupin Processing : A New Development, R S. Coffey
Lupin Processing : A New Development, R S. Coffey
Journal of the Department of Agriculture, Western Australia, Series 4
For a number of years Grain Pool marketing representatives have approachd stockfeed manufacturers around the world in an attempt to broaden the market for Western Australian lupin seed.
Wherever there was enough consumer interest to conduct a nutritional evaluation of the product, lupins were found to be non competitive for inclusion in both pig and poultry rations, while at the same price being acceptable as a cattle feed ingredient. The reason for this disparity proved to be the varying degrees of fibre digestability of lupins for the various livestock tested.
It became apparent that the fibrous lupin seed coat or …
1. Cereal Agronomy, 2. Pesticides, J. H. Moore, G. R. Dean
1. Cereal Agronomy, 2. Pesticides, J. H. Moore, G. R. Dean
Experimental Summaries - Plant Research
Best bet minimum tillage, 86AL38, 86AL39, 86AL40. Minimum tillage factors, 86AL62. South coast potential yield factors, 86 AL 81, 86AL82. Time of planting by variety interaction - south coast, 86AL87. Capeweed control in cereals with residual herbicides, 86AL45. Sprayseed/glean, roundup/glean tank mixes for grass control, 86AL43. Sorrel control systems, 86AL43. Sorrel control for pasture establishment. Pre plant ally on barley, 86AL86. Pre plant ally on oats, 86AL84, 86AL85. Pre plant ally on clover, 86AL63. Pre plant ally on peas, 86AL65. Pre plant ally on rape, 86AL67. Double knockdowns, 86AL68, 86MT67. Rate, time of spraying and scarifying interaction on pre-p1ant herbicides, …
Soil Science Research Report - 1986
Soil Science Research Report - 1986
Soil Science Research Reports
Wheat Experiments
Effect of Long Term Seed and Broadcast P on Winter Wheat Yields .......... 1
Effect of Method and Time of P Application on Winter Wheat Grain yield .......... 3
Corn Experiments
BKR Demonstration Farm - Comparison of Lime Sources and Rates in a Corn-Soybean Rotation .......... 5
Effect of Band Spacing on the Effectiveness of Dual Placed N and P on Corn Yield and P Uptake .......... 8
Effect of Broadcast Phosphorus on P Response of Ridge-Planted Corn .......... 10
High Yield Corn-Soybean-Wheat Rotation Study .......... 12
The Influence of Soil Bulk Density, Soil Water Regime and Fertilization …
Serradella Prospects At Esperance, Michael D A Bolland
Serradella Prospects At Esperance, Michael D A Bolland
Journal of the Department of Agriculture, Western Australia, Series 4
Yellow serradells is a promising introduced annual legume suitable for some of Western Australia's well drained sandy acid soils where other pasture legumes failto persist.
In the Esperance area serradella grows siccessfully on some sandy soils more than 0.5 metres deep. I develops deep roots rapidly - up to three times deeper than subterranean clover - and this is probably the main reason for its persistance.
At present only two late maturing, registered serradella cultivars are available to farmers in southern Australia. This article describes research at Esperance to delect earlier flowering cultivars for persistence in areas with less than …
Genetics Of Flower Abortion And Pod Type In Soybean, Krishna P. Sharma
Genetics Of Flower Abortion And Pod Type In Soybean, Krishna P. Sharma
Electronic Theses and Dissertations
Field studies were conducted in 1982, 1983 and 1984 in ten soybean (Glycine max (L.) Merrill) genotypes of maturity group 00 to III, to evaluate the effects of genotype and year on flower abortion (FA), flowers/raceme (FPR), raceme length (RL), pod types (PT), seeds/raceme (SPR), seed weight (SW), and yield/raceme (YPR). Reproductive efficiency index (REI) was calculated for parental genotypes and their segregating populations. The effects of main stem node position and raceme flower position on FA and PT were also studied. Genetic studies were on F2's of 13 crosses plus F3 and F4 generations of …
Protein Enrichment Of Cereal Grains For Livestock, Andrew C. Dunlop, C. L. Mcdonald
Protein Enrichment Of Cereal Grains For Livestock, Andrew C. Dunlop, C. L. Mcdonald
Journal of the Department of Agriculture, Western Australia, Series 4
Every year Western Australian farmers feed about 759,000 tonnes of cereal grain to livestock, mostly to sheep but also to dairy and beef cattle. These grains are fed as drought feeds, as supplements to augment poor quality or scarce paddock feed or in growth rations to attain higher levels of production. Many grains fed, however, have a low protien content and are therefore used inefficiently by animals.
Several methods of improving the low protien content of feed grains have been tested. They include the addition of lupin seed, spraying oats with urea and gassing oats with ammonia.
Tolerance Of Cereal Crops To Herbicides, D G. Bowran
Tolerance Of Cereal Crops To Herbicides, D G. Bowran
Journal of the Department of Agriculture, Western Australia, Series 4
Herbicides have come to play an important role in the control of weeds in Western Australian cereal crops, with some estimates showing that sufficient herbicide was applied to treat every hectare of cereal grown in 1984.
While the use of herbicides reduces competition from weeds, they may have a hidden cost. As chemicals which affect plants, herbicides may also affect plants, herbicides may also affect and damage the crop which they are protecting. The crop may possibly fail, and some or all of the economic benefits obtained from the chemical control of weeds may not be realised.
Growth And Magnesium Uptake Of Tall Fescue Lines At High And Low Potassium Levels, J. H. Edwards, Jeffrey F. Pedersen
Growth And Magnesium Uptake Of Tall Fescue Lines At High And Low Potassium Levels, J. H. Edwards, Jeffrey F. Pedersen
Department of Agronomy and Horticulture: Faculty Publications
Five tall fescue (Festuca arundinacea Schreb.) clonal lines with diverse root and xylem diameters were grown in nutrient solutions with magnesium (Mg) concentrations of 42, 125 and 250 µm and potassium K concentrations of 133 and 333 µm. Leaf Mg concentrations increased with increasing Mg rates at both low and high K concentrations. The tall fescue line with the largest root and xylem diameters had low leaf Mg concentrations, indicating a possible increased Mg tetany potential when consumed by cattle. The response of the K/(Mg+Ca) ratio in the plant, an indicator of tetany potential, to varying solution Mg at low …