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- Grains and field crops (8)
- Western Australia (7)
- Wheat (4)
- Yields (4)
- Cereals (3)
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- Potatoes (3)
- Barley (2)
- Cropping systems (2)
- Nitrogen fertilizers (2)
- Variety trials (2)
- Alternaria (1)
- Biosecurity, pests, weeds and diseases (1)
- Blueberries (1)
- Blueberry diseases (1)
- Blueberry pests (1)
- Cost analysis (1)
- Crop losses (1)
- Direct sowing (1)
- Disease control (1)
- Economic analysis (1)
- Esperance region (WA) (1)
- Evapotranspiration (1)
- Forrestania (WA) (1)
- Fungal diseases (1)
- Land capability (1)
- Lupins (1)
- Lupinus angustifolius (1)
- Natural resources (1)
- Oats (1)
- Organic blueberry production (1)
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Articles 1 - 15 of 15
Full-Text Articles in Agronomy and Crop Sciences
Tb198: Economic Analysis Of Organic Pest Management Strategies For Lowbush Blueberries Using Enterprise Budgeting, Andrew C. Files, David Yarborough, Frank Drummond
Tb198: Economic Analysis Of Organic Pest Management Strategies For Lowbush Blueberries Using Enterprise Budgeting, Andrew C. Files, David Yarborough, Frank Drummond
Technical Bulletins
Enterprise budgets were developed for the 12 different pest management treatments of a large-plot organic blueberry transitions project in Maine, covering two prune/harvest cycles (2004–2005 and 2006–2007). Regression analysis of the plot-level yield results for the aggregate of the two prune/harvest cycles indicated that burning fields as compared to mowing fields significantly increased blueberry yields over the aggregate of two prune/harvest cycles. Similarly, adding 1,000 lbs of sulfur before the first prune/harvest cycle significantly increased blueberry yields over the aggregate of two prune/harvest cycles as compared to no addition of sulfur. The addition of fertilizer had no significant impact on …
Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck
Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck
Technical Bulletins
The research presented here describes a set of three different experiments that sought to establish appropriate management practices for hairy vetch in Maine, and to determine whether variability for winter hardiness exists among germplasm available commercially or from gene banks. Specific objectives of the first experiment were to evaluate effects of planting date and companion crop on crop and weed dry weight and total above-ground N content, at two sites differing in drainage. In a second experiment, the winter hardiness of hairy vetch from six commercial sources and the effect of a rye companion crop on hardiness were evaluated. In …
Analysis Of Black Point In Wheat, J M. Wilson
Analysis Of Black Point In Wheat, J M. Wilson
Technical Bulletins
Fungal staining (black point) of wheat can reduce the quality of grain. The most serious problem is a discolouration of products. Discolouration is a consequence of infection by microorganisms. The most likely cause in Western Australia is a species of the common fungus Alternaria. Infection and discolouration occur between flowering and grain maturity, and the optimum environmental conditions are probably consecutive days of high relative humidity together with warm temperatures.
Seed Production And Hard Seededness Of Trifolium Subterraneum Subsp Brachycalycinum, Michael D A Bolland
Seed Production And Hard Seededness Of Trifolium Subterraneum Subsp Brachycalycinum, Michael D A Bolland
Technical Bulletins
Ungrazed swards of some subsp. brachycalycinum strains produced reasonable seed yields compared with subsp. subterraneum on the sandplain soils and annual Medicago species on the alkaline mallee soils. However, in swards which were grazed by sheep up to the start of flowering, subsp. brachycalycinum produced disappointing seed yields compared with subsp. subterraneum and annual Medicago species. On a sandy soil, prevention of burr burial compared with covering developing burrs with sand drastically reduce ation an inhibiting light factor operates to drastically reduce seed production.
Wheat And Barley Experiments On The Kumarl Soils At Salmon Gums, D A. Collins, Michael D A Bolland, R D. Fletcher
Wheat And Barley Experiments On The Kumarl Soils At Salmon Gums, D A. Collins, Michael D A Bolland, R D. Fletcher
Technical Bulletins
The water-holding capacity of these soils, and their location in a low rainfall area combine to make them marginal for producing grain. In contrast to sowing wheat on ley pasture, mechanically fallowing the year before planting markedly improved grain yields by 1.3 to 4 times.
Residual Value Of Rock Phosphate Fertilizers, J W. Bowden, Michael D A Bolland
Residual Value Of Rock Phosphate Fertilizers, J W. Bowden, Michael D A Bolland
Technical Bulletins
The residual value of Christmas Island C-grade ore, 500 degrees C heated (calcined) C-grade ore (Calciphos), and superphosphate was measured in three experiments. Plant yield, and bicarbonate-soluble phosphorus extracted from the top 10 cm of soil were used to indicate the effectiveness of the four fertilizers. Using either of these indicators, superphosphate was the most effective fertilizer.
Continuous Cereal Cropping With Alternative Tillage Systems In Western Australia, R J. Jarvis, N D. Delroy, A P. Hamblin
Continuous Cereal Cropping With Alternative Tillage Systems In Western Australia, R J. Jarvis, N D. Delroy, A P. Hamblin
Technical Bulletins
In 1977, a ten year series of continuous cropping trials was commenced to compare the effect of four farm tillage systems. This bulletin reports the grain yield results for the first six years of these trials.
Tb97: Evapotranspiration From Vegetative Surfaces In Maine, Stewart M. Goltz
Tb97: Evapotranspiration From Vegetative Surfaces In Maine, Stewart M. Goltz
Technical Bulletins
Diurnal evapotranspiration measurements were made over lowbush blueberries and potatoes in Maine during selected portions of the 1977 and 1978 growing seasons. Half hourly measurements were made using a Bowen ratio-energy budget method. Data from these measurements provided the principal energy budget components, an evaluation of potential evapotranspiration, and an array of diagnostic measures used to evaluate the partitioning of available energy into sensible and latent heat. Evapotranspiration rarely reached potential values and a large variability was found to exist. In an attempt to provide a reliable daily estimate of evapotranspiration from potatoes, using a minimum number of environmental measurements, …
Response To Nitrogen Fertilisers Of Wheat, Oats, And Barley In Western Australia, M G. Mason, R N. Glencross
Response To Nitrogen Fertilisers Of Wheat, Oats, And Barley In Western Australia, M G. Mason, R N. Glencross
Technical Bulletins
Trials were mainly sited in areas normally receiving more than 450 mm average annual rainfall. Response curves were fitted to each set of data and then averaged to give overall response curves for each crop. There was little difference between the crops in absolute or percentage response to nitrogen fertiliser but the nitrogen fertiliser rate required for maximum yield was highest for wheat and lowest for oats.
Nitrogen Fertilisers For Rape (Brassica Campestris And B Napus) And Wheat In Western Australia, M G. Mason
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.
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
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.
Lupin Wild Types Introduced Into Western Australia To 1973, G B. Crosbie, John S. Gladstones
Lupin Wild Types Introduced Into Western Australia To 1973, G B. Crosbie, John S. Gladstones
Technical Bulletins
Collection site data, preliminary rating of field characteristics and disease reactions, and measurements of seed protein oil contents.
Tb85: A New Potato Scab Problem In Maine, F. E. Manzer, G. A. Mcintyre, D. C. Merriam
Tb85: A New Potato Scab Problem In Maine, F. E. Manzer, G. A. Mcintyre, D. C. Merriam
Technical Bulletins
The scientific literature is filled with conflicting reports on the development of the common scab disease of potatoes and its causal organism. One unresolved question is soil reaction, once thought to be the answer in controlling this disease. Scientific studies an d practical experience over a long period had shown that acid soils having a pH of approximately 5.3 or below usually did not support common scab development, though sporadic and unexplained reports of disease occurrence in these soils were observed. In the late 1950s, however, such reports became more frequent in Maine and before the mid-1960s, losses relate d …
Tb5: Effects Of Factorially Combined Levels Of Sulfur And Magnesium On Potato Plants (Solanum Tuberosum), Harold W. Gausman, George O. Estes
Tb5: Effects Of Factorially Combined Levels Of Sulfur And Magnesium On Potato Plants (Solanum Tuberosum), Harold W. Gausman, George O. Estes
Technical Bulletins
Katahdin potatoes were grown in the greenhouse in 2-gallon, crocks containing a virgin Caribou loam soil. Factorially combined levels of S and Mg, each at an equivalent rate of 0, 10, 20, and 30 pounds per acre, were imposed as treatments for the first five of seven crops. The sixth and seventh crops of potatoes were grown primarily to further deplete the soil of S and Mg and to enhance or accentuate plant deficiency symptoms which occurred quite intensively during growth of the fifth crop of potatoes. The objective was to evaluate effects of factorially combined levels of sulfur and …
Tb3: Studies Concerning Effects Of Chloride And Potassium On The Nutrition Of Potato Plans, Solanum Tuberosum, Harold W. Gausman
Tb3: Studies Concerning Effects Of Chloride And Potassium On The Nutrition Of Potato Plans, Solanum Tuberosum, Harold W. Gausman
Technical Bulletins
To evaluate the premise that Cl- and other anions might influence tuber quality by affecting the esterification of inorganic phosphorus and subsequent energy transformations involving metabolic processes of carbohydrate synthesis or degradation, the author studied the effects of Cl ~ in relation to cations and anions on nutrient uptake and inorganic phosphorus transformations.