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Kansas Agricultural Experiment Station Research Reports

Calcium

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Full-Text Articles in Life Sciences

Comparison Of Mehlich-3 And Ammonium Acetate Extractable Calcium And Magnesium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz, L. Hargrave Jan 2021

Comparison Of Mehlich-3 And Ammonium Acetate Extractable Calcium And Magnesium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz, L. Hargrave

Kansas Agricultural Experiment Station Research Reports

The use of the Mehlich-3 (M3) soil test procedure to assess the plant availability of numerous macro and micronutrients has become common at soil testing labs across the US. Mehlich-3 is used for soil tests for phosphorus (P) and potassium (K) in Kansas; however, data for other base cations for existing methods are scarce for Kansas soils. The objective of this study was to investigate the relationship between M3 and ammonium acetate (AA) extractable calcium (Ca) and magnesium (Mg). Regression analyses indicate a near 1:1 linear relationship between M3-Mg and AA-Mg across a wide range of soil pH and ...


Evaluation Of Soil Parameters After Long-Term Subsurface Drip Irrigation Under Minimum Tillage System, E. B. Rutter, D. A. Ruiz Diaz Jan 2021

Evaluation Of Soil Parameters After Long-Term Subsurface Drip Irrigation Under Minimum Tillage System, E. B. Rutter, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to evaluate soil parameters after the long-term use of sub-surface drip irrigation under no-till, with the use of high pH irrigation water. Results from this study showed that stratification of soil pH and soil test phosphorus (P) was more prominent when compared to other soil parameters. However, the stratification of pH and soil test P is likely the combined effect of surface fertilizer application and sub-surface irrigation water. The stratification of other parameters, such as soil calcium (Ca) and sodium (Na) and electrical conductivity (EC), was less clear. Soil test potassium (K) showed some ...


Effects Of Dietary Total Calcium To Total Phosphorus Ratio On Growth Performance, Carcass Characteristics, Bone Mineralization, And Economics In 58- To 281-Lb Pigs, C. M. Vier, S. S. Dritz, M. D. Tokach, M. A. Gonçalves, U. A. Orlando, J. R. Bergstrom, J. C. Woodworth, R. D. Goodband, J. M. Derouchey Jan 2018

Effects Of Dietary Total Calcium To Total Phosphorus Ratio On Growth Performance, Carcass Characteristics, Bone Mineralization, And Economics In 58- To 281-Lb Pigs, C. M. Vier, S. S. Dritz, M. D. Tokach, M. A. Gonçalves, U. A. Orlando, J. R. Bergstrom, J. C. Woodworth, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 1,134 barrows and gilts (PIC; 359 × Camborough) with an initial pen average body weight (BW) of 58.0 ± 1.57 lb were used in a 110-d growth trial to determine the effects of feeding different analyzed total calcium to phosphorus (Ca:P) ratios on performance of growing-finishing pigs from 58 to 281 lb. Pens of pigs were randomly assigned to 1 of 6 dietary treatments in a randomized complete block design with BW as a blocking factor. There were 7 replicate pens per treatment and 27 pigs per pen. The experimental diets were corn-soybean meal-based, and ...


Effects Of Dietary Ca And P Concentrations On Growth Performance Of 13- To 25-Lb Pigs, F. Wu, M. D. Tokach, J. M. Derouchey, S. S. Dritz, J. C. Woodworth, R. D. Goodband Jan 2017

Effects Of Dietary Ca And P Concentrations On Growth Performance Of 13- To 25-Lb Pigs, F. Wu, M. D. Tokach, J. M. Derouchey, S. S. Dritz, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 360 nursery pigs (PIC 1050 × 280, initially 13.3 ± 2.39 lb) were used in a 45-d growth study to determine the effects of feeding 2 standardized total tract digestible (STTD) P and 3 Ca concentrations on growth performance. In a completely randomized design, pens of pigs (10 pigs per pen, 6 pens per treatment) were allotted randomly to 1 of 6 dietary treatments. Dietary treatments were arranged in a 2 × 3 factorial, with 2 levels of STTD P (at or above NRC requirement estimates) and 3 levels of Ca (0.65, 0.90, and 1.20 ...


Effects Of Dietary Calcium And Phosphorus Concentrations And Addition Of Phytase On Growth Performance Of Nursery Pigs, F. Wu, M. D. Tokach, J. M. Derouchey, S. S. Dritz, J. C. Woodworth, R. D. Goodband Jan 2017

Effects Of Dietary Calcium And Phosphorus Concentrations And Addition Of Phytase On Growth Performance Of Nursery Pigs, F. Wu, M. D. Tokach, J. M. Derouchey, S. S. Dritz, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 720 nursery pigs (PIC 1050 × 280, initially 13.4 ± 0.47 lb) were used in a 42-d growth study to determine the effects of feeding 2 calcium (Ca) and 3 standardized total tract digestible (STTD) phosphorus (P) concentrations on growth performance and bone ash content. Pens of pigs (10 pigs/pen, 12 pens/treatment) were blocked by initial pen weight, and within blocks pens were allotted randomly to 1 of 6 dietary treatments. Dietary treatments were arranged in a 2 × 3 factorial, with 2 levels of Ca (0.58 vs. 1.03%) and 3 levels of STTD ...


Assessment Of Sampling Technique From Feeders On Copper, Zinc, Calcium, And Phosphorus Analysis, A. M. Jones, J. C. Woodworth, C. Vahl, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. M. Derouchey Jan 2017

Assessment Of Sampling Technique From Feeders On Copper, Zinc, Calcium, And Phosphorus Analysis, A. M. Jones, J. C. Woodworth, C. Vahl, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

While numerous research articles have been published on how to collect a representative sample, and analytical or laboratory-to-laboratory variation, we are unaware of any studies to examine exactly how many samples to collect from feeders, or whether they should be pooled or not to minimize analytical variation. Therefore, this study was designed to evaluate different sampling procedures and the number of samples to collect, and achieve an accurate assessment of nutrient fortification in swine diets.

Diet samples were collected from a study evaluating the effects of increasing Cu on growth performance of finishing pigs. Treatments were arranged in a split-plot ...