Proceedings
Authors
| Filter results4 paper(s) found. |
|---|
1. Changes in P Uptake and Partitioning in Soybean Cultivars Released in the Last 90 YearsHistorical changes in nutrient uptake and partitioning of soybean [Glycine max (L.) Merr.] were not studied. Field studies were conducted in 2011 and 2012 to investigate phosphorus (P) uptake changes and partitioning through the growing season in 25 maturity group (MG) II, and 26 MG III cultivars. Plant samples were taken and partitioned at V4 (four trifoliates), R2 (full bloom), R4 (full pod), R6 (full seed), and R8 (physiological maturity) growth stages. In-season samples were partitioned into... |
2. P and K Fertilizer on Bottomland SoilsP and K Fertility on Bottomland Soils 1 William 0. Thom 2 Most of the bottomland soils of western Kentucky are important areas for corn and soybean production. They consist of the Belknap, Karnak, Melvin, Sadler, Stendal and Waverly soil series that are somewhat poorl y to poorl y drained. A phosphorus and potassium study was initiated on the Belknap soil in Webster County. Soybeans and corn were alternated during the 4 year study. The P study consisted of 5 rates (0, 50, 100, 150 and 200 Ibs P 0... |
3. Trapping Function of Grassed FiltersThe potential to contaminate rivers, streams, and other natural water bodies with sediment, nutrients, pesticides and bacteria in runoff from agricultural land is a very important water quality issue. Conservation tillage has proven to be effective in decreasing soil exposure to rainfall, thus decreasing water runoff and erosion potential. Vegetative filters slow down runoff that allows sediment, nutrients, pesticides and bacteria to be deposited. Combining conservation tillage with vegetative filters... |
4. A Nitrogen Rate of Return Calculator for Wheat, Barley, and Canola in ManitobaNitrogen (N) general guidelines in Manitoba ar e reviewed by a panel of government, industry and university experts on an annu al basis and revisions as well as additions and corrections are reflected in the Soil Fertility Guide that is published (as well as posted on the web-site) by Manitoba Agriculture, Food and Rural Initiatives. However, a comprehensive review of the N databases for barley, wheat and canola has not been undertaken since September 1990. Post 1988 database of experiments conducted... |