Agronomy and Crop Sciences Commons^™

Molybdenum Nutrition., M. M. Riley

Experimental Summaries - Plant Research

Field trials. Residual value of Molybdenum on an acid soil, 81N040. Residual value of Molybdenum on an acid soil, 81M2. Residual value of Molybdenum of an acid soil, 81LG12. Residual value of Molybdenum on an acid soil, 82N07. Residual values of different Molybdenum sources, 84Me10. Residual values of different Molybdenum sources, 84Ge49 Forms and rates of soil and seed applied Molybdenum, 84Me9. Molybdenum requirements of wheat, triticale and lupins, 84Me8. Residual values of Molybdenum with different nitrogen sources, 85M40. The Molybdenum nutrition of various crop and pasture cultivars, 85Mo42. Molybdenum with pre-emergent herbicides, 85TS21. Glasshouse experiments. Reactions of Molybdenum with …

Agronomy Of Oat Varieties., W. K. Anderson

Experimental Summaries - Plant Research

Nitrogen rates x oat varieties, 85MT47. Seed rates x oat varieties, 85MT48. Time-of-sowing x oat varieties, 85MT49. Applied Phenology in crop variety testing, 85WH5, 85N4.

Changes In Forest Soils Following Clearcutting Of Pine Forests In The Ouachita Mountains Of Arkansas, Harlan R. Stoin, Bajuri Bin Kadmin, Lyell F. Thompson

Journal of the Arkansas Academy of Science

Soil characteristics of the mineral surface soil (0-6 cm) on three small watersheds in the Ouachita Mountains of Arkansas from which the pine forests have been clearcut, crushed, and burned for site preparation were studied for the first two years following clearcutting and compared to soils from adjacent uncut pine forest watersheds. Following clearcutting and burning, soil pH was generally higher than in uncut forest soils. The greatest pH differences occurred within several months of burning and generally decreased through the end of the second year. Soil organic matter content was lower immediately following clearcutting and burning and increased to …

Pesticide Use In The 1983 Soybean Crop: Report Of A Survey Of Arkansas Producers, Joseph D. Waldrum

Journal of the Arkansas Academy of Science

No abstract provided.

The Effects Of Nitrogen And Tillage On Denitrification Rates And The Yield Of Corn, Oats, And Soybeans In Eastern South Dakota, Brian Robert Hilton

Electronic Theses and Dissertations

Two field experiments were established in 1983 to evaluate the effect of nitrogen (N) on corn, oats and soybeans grown under various tillage sytems [sic] in east central South Dakota. A corn-oats rotation was grown under moldboard plow (MP), chisel plow (CH), and no-till (NT) tillage systems in a Poinsett silty clay loam soil (Udic Haplaboroll, fine-silty, mixed). In southeast South Dakota a corn-soybean rotation and a continous [sic] corn rotation were grown under MP NT and till plant (TP) and MP CH and NT systems, respectively on an Egan silty clay loam soil (Udic Haplustoll fine silty mixed). Nitrogen …

An Ecological Study Of The Vegetation Of The Grand River/Cedar River, Sioux, And Ashland Districts Of The Custer National Forest, Paul Luther Hansen

Electronic Theses and Dissertations

A land-classification system based on potential natural vegetation is presented for the Grand River/Cedar River, Sioux, and Ashland Districts of the Custer National Forest. The districts are located in northwestern South Dakota, southwestern North Dakota, and southeastern Montana. The vegetation was characterized according to habitat type based on concepts and methods developed by Daubenmire. A total of 169 stands were intensively sampled over a four-year period. Twenty-six habitat types were described including eight steppe, nine shrub-steppe, four woodland, and five forested habitat types. In addition, two shrub-steppe community types were identified. A diagnostic key is provided for field identification of …

Studies On Perennial Weed Control In South Dakota, Steven Robert Gylling

Electronic Theses and Dissertations

Studies were conducted to measure efficacy and economics of selected herbicide treatments for leafy spurge control in pasture, and to characterize the interaction of ammonium sulfate and glyphosate for quackgrass control. Several treatments resulted in leafy spurge control exceeding 90% in the tested pasture. Mean herbage dry-weight yield in treated plots was 2340 kg/ha, a 67% increase over untreated plots. Forage yields did not significantly differ among treatments controlling 90% or more leafy spurge. Marginal net return over marginal cost from herbicide treatments ranged from $35 to loss of $63/ha. Treatments providing satisfactory leafy spurge control with minimum economic risk …

Response Of Five Spring Wheat Cultivars To Drought, Gregory Keith Hess

Electronic Theses and Dissertations

Response of plants to water stress are numerous and interrelated. Morphological traits and growth patterns have been studied and reviewed extensively. Root growth patterns, leaf area and thickness, presence of cuticle hair and waxes, leaf movement, and wilting are only a few traits studied. Metabolic functions and how water stress affects these processes through stomatal behavior, transpiration rates and carbon dioxide exchange rates have also been reviewed. Plant breeders are continually searching for traits which aid in selecting for high yielding genotypes in any one environment. Moisture is often limiting in South Dakota's environment, leading to relatively low grain yields …

Comparison Of Two Phosphorus Tests On Calcareous Soils Of Eastern South Dakota, Mohamed Ali

Electronic Theses and Dissertations

Phosphorus is an important nutrient in crop production, since many soils in their native state do not contain sufficient available phosphorus to maximize crop yield. Now, more than ever, the importance of an adequate supply of plant nutrients to insure [sic] sufficient crop production is being recognized. Soil scientists and agronomists are continually striving to overcome nutrient deficiencies as well as use improved management practices in order that yields may more nearly approach the genetic limit of crop plants. Phosphorous forms sparingly soluble compounds with divalent and trivalent cations in soils. Therefore, the amount of P in the soil solution …

Cereal Weed Control, Cereal Disease, Roundup Effects On Wheat & Barley, Noxious Weed Control., J. H. Moore, E. B. Hoskins, G. Dean

Experimental Summaries - Plant Research

Pre-seeding Grass Control, 85AL41. Sorrel control with Ally, 85AL39. Capeweed control pre-seeding, 85AL40. Effect of PP 450 on wheat diseases, 83AL36. Roundup effects on wheat and barley, 85AL64. History effects on wheat responses, 85AL42. Garlon 480 time of spraying on blackberry. Blackberry herbicide (high volume) demonstrations and observations. Blackberry herbicide (low volume) demo sites. Comparison of sprayers and spray volume for blackberry control. Blackberry herbicides screening. Krenite on blackberry, 76 AL 8. Methods of Krenite application for blackberry Control. Blackberry Wettability. Ropewick applied 2,4-D Amine for Arum Lily control. Arum lily herbicide screening. Herbicide screening for Arum lily control. Herbicide …

Influence Of Soil Acidity On Barley Production., P. J. Dolling, A. R. Little

Experimental Summaries - Plant Research

A soil survey of 38 sites in barley growing areas of Western Australia was carried out in 1984. It was found that 53% of topsoils surveyed had a pH less than 5.5, acid enough to suspect barley yields might be affected. In 1985 an extensive field trial proqramme was established at 9 sites. The sites were selected from the 1984 survey and they varied in their level of acidity from mild to severe. 85NA, 85NA2, 85NA5, 85NA4, 85NA3, 85KA3, 85KA4, 85KA5, 85KA6, 83N046,

The Tolerance Of Cereals To Herbicides, D G. Bowran

Experimental Summaries - Plant Research

Wheat tolerance, Barley tolerance, Oats and Triticale tolerance, Ear development in cereals.

Fungicidal Control Of Wheat Leaf Diseases, A G P Brown

Experimental Summaries - Plant Research

In a further experiment on fungicides to protect wheat during flowering and grain fill from Septoria nodorurn at Badgingarra Research Station, rates below 1 litre and lower carrier volumes were compared for the fungicide Tilt applied at Zadoks stage 50. A few other fungicides were also included. At spraying there was a moderate infection by Septoria nodorurn (85% of leaf damage), Septoria tritici (10%) and Pyrenophora tritici-repentis (5%). Good control was obtained with most treatments (Table 1) with only Benlate at 1 kg/ha appearing ineffective when percentage disease was rated on October 10, 1985. At October 17 disease scores differed …

Barley Agronomy., K. J. Young, B. R. Wylde, B. Raszyk, T. N. Khan

Experimental Summaries - Plant Research

Barley foliar diseases, effect on nitrogen response, 85ES25, 85E24, 85E25, 85MT37, 85ES29, 85MT38, 85E26, 85ES32, 85ES31, 85ES30, 85ES26, 85ES24, 85ES27, 85ES28, 85ES34, 85M27, 85SG27, 85MT42, 85C70,

Manganese Deficiency - Plant Nutrition., J. W. Gartrell, T. C. Johnston, M. M. Riley

Experimental Summaries - Plant Research

Effectiveness of different fertilizers for correcting manganese deficiency in wheat

Apparent critical levels in field experiments

Differences between wheat varieties in ability to absorb and utilize soil and fertiliser manganese under deficiency and near-deficiency conditions in the Great Southern.

84N03, 84N04, 84N05, Mean of 3 experiments, 84N07, 84N06, 85N068, 85N064, 85N065, 85N066, 85N067, 85N069, 85LG36.

Low Tillering Cereals, Early Maturity Of Cereals, Cereal Variety And Reduced Branching Lupins., R. Delane, J. Hamblin

Experimental Summaries - Plant Research

Trial 85C62 - growth and water use of low tillering cereals. Trial 85C62 - yield potential of low tillering cereals. Trial WEUNI - response of low tillering breeding lines and standard varieties to sowing rate. Trial 85C45 - effect of flowering date, seeding rate, deep tillage and applied nitrogen on yield of barley. Trial 85C61 - wheat variety x management interaction on sandplain. Trial 85C55 - growth and water use of reduced branching lupins. Trial 85C56 - normal and reduced branching lupins - planting density response.

Nitrogenous Fertilisers For Cereals, Results., M. G. Mason

Experimental Summaries - Plant Research

78C3, 78WH, 78M, 85C1, 85C2, 85BA1, 85BA2, 85WH, 85WH2, 85A1, 85A2, 85M1, 85M2, 85N1, 85N2, 85MT1, 85MT2, #78BA1, #78WH2, #80BA3, 85M01, 85WH3, 85M06, 85M07, 85M08, 85M09, 85M010, #80WH3, #80M1, #80N3, 85ME73, 85ME7, #85M4, #81LG29, 85N3, 85E1, #84MA2, #84WH46,