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Kansas Fertilizer Research 2020, D. A. Ruiz Diaz Jan 2020

Kansas Fertilizer Research 2020, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

A summary of research conducted in 2018-2020 on fertilizer use and management practices for crops in Kansas. Published in 2020 from the Kansas State University Agricultural Experiment Station and Cooperative Extension Service https://www.ag.k-state.edu/.


Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond Jan 2020

Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond

Kansas Agricultural Experiment Station Research Reports

Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated corn in western Kansas. In 2019, N applied alone increased yields by 71 bu/a, whereas P applied alone increased yields 10 bu/a. Nitrogen and P applied together increased yields up to 131 bu/a, which is 10 bu/a less than the 10-year average of 141 bu/a. Application of 120 lb N/a (with highest P rate) produced 97% of maximum yield in 2019, which is slightly greater than the 10-year average. Application of 80 instead of 40 lb ...


Soil Phosphorus Fractions After Long-Term Fertilizer Placement In Different Kansas Soils, M. J. Coelho, D. A. Ruiz Diaz Jan 2020

Soil Phosphorus Fractions After Long-Term Fertilizer Placement In Different Kansas Soils, M. J. Coelho, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Phosphorus (P) fertilizer placement can affect the long-term dynamics and forms of P, and the overall soil P pools. These changes can vary by soil type, and affect P uptake and use efficiency by crops. The objective of this study was to evaluate the changes in the labile P fractions in three Kansas soil types under P fertilizer placements (broadcast versus deep band) after ten years of crop rotation. Three field studies were conducted at Scandia, Ottawa, and Manhattan. Three treatments were evaluated: 1) a control with no P fertilizer application and two fertilizer treatments (80 lb P2O ...


Relationships Between The Haney H3a And Conventional Soil Tests For Phosphorus And Potassium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz Jan 2020

Relationships Between The Haney H3a And Conventional Soil Tests For Phosphorus And Potassium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

The Haney H3A soil test procedure has gained popularity in recent years for soil health evaluation and has been used in some circles to adjust fertilizer management practices. However, data relating this test to current soil tests, relative crop yield, or total nutrient uptake are nonexistent in Kansas soils. The objective of this study is to evaluate the correlation between H3A soil test phosphorus (P) and potassium (K) with soil tests currently used in Kansas (e.g. Mehlich-3). Soils from a nitrogen response study were extracted using both Mehlich-3 and H3A (version 4) soil test procedures. Mehlich-3 and Haney extractable ...


Response To Mixing Wheat Seed With Fertilizer In The Drill At Planting, C. Weber, D. A. Ruiz Diaz Jan 2020

Response To Mixing Wheat Seed With Fertilizer In The Drill At Planting, C. Weber, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Mixing dry phosphorus (P) fertilizer with winter wheat seed is common in Kansas to provide a starter fertilizer benefit to the crop. This study was designed to evaluate the effects of dry P sources, rates, and times fertilizer mixed with wheat seed, effects on early growth and overall productivity and yield of the crop. Two winter wheat studies were conducted in the 2018–2019 wheat growing season at Manhattan (site 1) and Topeka (site 2) Kansas. The previous crop for site 1 was soybean and corn at site 2. The winter wheat was no-till drilled at 70 lb/a and ...


Determining The Phosphorus Release Curve For Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, H. I. Calderón, J. M. Faser, B. L. Guo Jan 2020

Determining The Phosphorus Release Curve For Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, H. I. Calderón, J. M. Faser, B. L. Guo

Kansas Agricultural Experiment Station Research Reports

A total of 280 nursery pigs (DNA 241 × 600, initially 22.8 lb) were used in a 21-d growth trial to determine the available P (aP) release curve for Smizyme TS G5 2,500 (Origination, LLC., Maplewood, MN). Pigs were weaned at approximately 21 d of age, randomly allotted to pens based on initial body weight (BW), and fed common starter diets. On d 21 post-weaning, considered d 0 of the study, pens were blocked by BW and randomly allotted to 1 of 7 dietary treatments with 5 pigs per pen and 8 pens per treatment. Seven 1-ton batches of ...


Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer Jan 2020

Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Tall fescue production was measured during the second year of a study with locations started in fall of 2016 and fall of 2017. In the second year at both sites, phosphorus (P) fertilization rate did not affect harvest yields. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, fall harvest yields at Site 1 in 2018 were greater without N, but were greater with spring N application at Site 2 in 2019. In both site-years, the second-year tall fescue total yield rank as affected by ...


Determination Of Efficacy Of Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. Faser Jan 2019

Determination Of Efficacy Of Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. Faser

Kansas Agricultural Experiment Station Research Reports

A total of 320 nursery pigs (DNA; 241 × 600; initially 22.9 lb BW) were used in a 21-d growth trial to determine the available P (aP) release curve for Smizyme TS G5 2,500 (Origination, Inc., Saint Paul, MN). Pigs were weaned at approximately 21 d of age, randomly allotted to pens based on initial body weight (BW), and fed common starter diets. On d 21 post-weaning, considered d 0 of the study, pens were blocked by BW and randomly allotted to 1 of 8 dietary treatments with 5 pigs per pen and 8 pens per treatment. Eight 1-ton ...


Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer Jan 2019

Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

A tall fescue production study was conducted at two locations, beginning in the fall of 2016 and the fall of 2017. At both sites, phosphorus (P) fertilization rate only affected the spring harvest, with few differences in yield. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, at Site 1 in 2017 fall harvest yields were greater from the spring N applica­tion, but this response was less at Site 2 in 2018. In both years, applying N increased tall fescue yield, but at Site ...


Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney Jan 2018

Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Tall fescue is the major cool-season grass in southeastern Kansas. Perennial grass crops, as with annual row crops, rely on proper fertilization for optimum production; however, meadows and pastures are often under-fertilized and produce low quantities of low-quality forage. Even when new stands are established, this is often true. The objective of this study was to determine whether N, P, and K fertilization improves yields during the early years of a stand.


Standardized Total Tract Digestible Phosphorus Requirement Of 13- To 28-Lb Pigs Fed Diets With Or Without Phytase, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband Jan 2018

Standardized Total Tract Digestible Phosphorus Requirement Of 13- To 28-Lb Pigs Fed Diets With Or Without Phytase, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 1,080 nursery pigs (PIC 280 ×1050, initially 13.0 ± 2.38 lb BW) were housed in 3 commercial research rooms and used in a 46-d study to determine the effects of increasing standardized total tract digestible (STTD) phosphorus (P) concentrations in diets with and without phytase on growth performance and percentage bone ash. Pens of pigs (10 pigs per pen, 9 pens per treatment) were balanced for equal pen weights and allotted randomly to 1 of 12 treatments. Dietary treatments were arranged in 2 sets of dose titration with 6 levels of STTD P with and ...


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 ...


Nitrogen And Phosphorus Application Effects On Pearl Millet Forage Yield And Nutritive Value, D. D. Serba, A. Obour Jun 2017

Nitrogen And Phosphorus Application Effects On Pearl Millet Forage Yield And Nutritive Value, D. D. Serba, A. Obour

Kansas Agricultural Experiment Station Research Reports

There is limited information on the nitrogen (N) and phosphorus (P) fertilizer requirement of pearl millet forage in dryland systems. Determination of optimum N and P rates for pearl millet forage production in dryland environments of the Great Plains will have economic advantage for farmers and ranchers growing pearl millet for forage. A field experiment was conducted in 2016 at the Agricultural Research Center-Hays, KS, to investigate N and P fertilizer application effects on forage yield and nutritive value of pearl millet. Factorial combinations of five levels of N (0, 30, 60, 90, and 120 lb/a) and three levels ...


Impact Of Cover Crops And Phosphorus Fertilizer Management On Nutrient Cycling In No-Tillage Corn-Soybean Rotation, R. E. Carver, N. O. Nelson, D. S. Abel, K. Roozeboom, G. J. Kluitenberg, P. J. Tomlinson, J. R. Williams Jun 2017

Impact Of Cover Crops And Phosphorus Fertilizer Management On Nutrient Cycling In No-Tillage Corn-Soybean Rotation, R. E. Carver, N. O. Nelson, D. S. Abel, K. Roozeboom, G. J. Kluitenberg, P. J. Tomlinson, J. R. Williams

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to quantify the effects of cover crops and different fertilizer management techniques on the amount of nutrients being removed and recycled in the soil system. This study was conducted at Ashland Bottoms, KS, from 2014-2016. A 2 × 3 factorial design with three replicates was utilized in this study. The fertilizer management treatments included a control of 0 lb/a P2O5, along with fall broadcast and spring injected applications of P2O5 based on a build and maintain recommendation system. Results show that total uptake of K2O and ...


Standardized Total Tract Digestible Phosphorus Requirement Of 25- To 50-Lb Pigs, C. M. Vier, F. Wu, S. S. Dritz, M. D. Tokach, M. A. Goncalves, U. A. Orlando, J. C. Woodworth, R. D. Goodband, J. M. Derouchey Jan 2017

Standardized Total Tract Digestible Phosphorus Requirement Of 25- To 50-Lb Pigs, C. M. Vier, F. Wu, S. S. Dritz, M. D. Tokach, M. A. Goncalves, U. A. Orlando, J. C. Woodworth, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 1,080 barrows and gilts (PIC; 337 × Camborough, initial pen average BW of 25.2 ± 0.64 lb) were used in a 21-d trial to determine the standardized total tract digestible (STTD) P requirement of nursery pigs from 25 to 50 lb. Two groups of pigs were weaned at approximately 21 d and allotted to pens according to BW and gender. There were 6 replicate pens per treatment and 23 to 27 pigs per pen. Pens of pigs were randomly allotted to experimental diets based on average BW at d 21 and 24 post-weaning, in a randomized ...


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 ...


Effects Of Standardized Total Tract Digestible Phosphorus On Growth Performance, Carcass Characteristics, Bone Mineralization, And Economics Of 53- To 287-Lb Pigs, C. M. Vier, F. Wu, M. B. Menegat, H. S. Cemin, S. S. Dritz, M. D. Tokach, M. A. Goncalves, U. A. Orlando, J. C. Woodworth, R. D. Goodband, J. M. Derouchey Jan 2017

Effects Of Standardized Total Tract Digestible Phosphorus On Growth Performance, Carcass Characteristics, Bone Mineralization, And Economics Of 53- To 287-Lb Pigs, C. M. Vier, F. Wu, M. B. Menegat, H. S. Cemin, S. S. Dritz, M. D. Tokach, M. A. Goncalves, U. A. Orlando, J. C. Woodworth, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 1,130 barrows and gilts (PIC; 359 × Camborough, initial pen average BW of 53.2 ± 1.61 lb) were used in a 111-d growth trial to determine the standardized total tract digestible (STTD) P requirement of growing-finishing pigs from 53 to 287 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 26 to 27 pigs per pen (at least 13 barrows and gilts per pen). The experimental diets were corn-soybean meal-based and were ...


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 ...


Productivity Of A Triticale And Crimson Clover Winter Cover Crop For Dairies, K. Olagaray, C. Takiya, M. Scheffel, T. Brown, J. S. Stevenson, D. H. Min, B. Bradford Jan 2017

Productivity Of A Triticale And Crimson Clover Winter Cover Crop For Dairies, K. Olagaray, C. Takiya, M. Scheffel, T. Brown, J. S. Stevenson, D. H. Min, B. Bradford

Kansas Agricultural Experiment Station Research Reports

The potential for a winter cover crop to align with agronomic objectives and to support milk production was evaluated at the Kansas State University Dairy Teaching and Research Center, Manhattan, KS. August planting of a triticale and crimson clover blend following corn silage harvest resulted in production of more than 3.5 tons of dry matter prior to subsequent corn planting. After ensiling, the impact of triticale/crimson clover silage (TCS) on milk production was evaluated in 48 mid- to late-lactation Holstein cows. Cows were blocked by parity (1 and 2+) and milk production, then randomly assigned within block to ...


Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney Jan 2017

Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Tall fescue production was studied during a third year at two locations. In 2015, Site 1 was affected by an interaction between nitrogen (N) and phosphorus (P) fertilization rates; while in 2016, Site 2 mainly received production differences by N fertilization rates. Potassium (K) fertilization caused little effect at both sites.

Third-year production of tall fescue was affected by an interaction between nitrogen (N) and phosphorus (P) fertilization rates at Site 1 in 2015, but mainly by N fertilization rates at Site 2 in 2016, with little effect from potassium (K) fertilization at either site.


Soybean Sudden Death Syndrome Influenced By Macronutrient Fertility On Irrigated Soybeans In A Corn/Soybean Rotation, Eric Adee, Dorivar Ruiz Diaz, C. R. Little Jan 2017

Soybean Sudden Death Syndrome Influenced By Macronutrient Fertility On Irrigated Soybeans In A Corn/Soybean Rotation, Eric Adee, Dorivar Ruiz Diaz, C. R. Little

Kansas Agricultural Experiment Station Research Reports

The effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on a corn/ soybean cropping sequence were evaluated from 1983 to 2016, with corn planted in odd years. There was a negative relationship between the P rate applied during the corn years and the severity of sudden death syndrome (SDS) in 2014 and 2016 soybean.


Sudden Death Syndrome And Soybean Planting Date, Eric Adee, C. R. Little, I. A. Ciampitti Jan 2017

Sudden Death Syndrome And Soybean Planting Date, Eric Adee, C. R. Little, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

The effect of planting date on severity of sudden death syndrome (SDS) and yield was evaluated for the second year in two studies at the Kansas River Valley experiment fields in 2016. One study was established to promote SDS and the other to minimize SDS. In both studies the severity of SDS was greatest with the earlier planting dates. The yield was greatest with the earlier planting date, except for the most susceptible variety. The severity of SDS was not as great as had been observed in previous years. There is a very positive benefit to planting in early May ...


Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer Jan 2016

Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

(Abstract only. Link to: http://newprairiepress.org/kaesrr/vol1/iss4/1/) Article is nearly identical to Nitrogen, Phosphorus, and Potassium Fertilization for Newly Established Tall Fescue previously published in Southeast Agricultural Research Center 2015, included in this PDF.

First-year production of tall fescue (Site 1 in 2013 and Site 2 in 2014) was affected by nitrogen (N) and phosphorus (P), but not potassium (K) fertilization. Environmental conditions likely influenced the growth of the fescue and the response to fertilizer N and P in the first year of production at the two sites.


Evaluation Of Phosphorus Source And Chelate Application As Starter Fertilizer In Corn, C. L. Edwards, D. Ruiz Diaz Jan 2016

Evaluation Of Phosphorus Source And Chelate Application As Starter Fertilizer In Corn, C. L. Edwards, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

The differences between common phosphorus (P) fertilizers as a starter in corn production have been studied for many years. However, little research has been conducted showing which P fertilizer sources are most effective with varying compositions of ortho- and poly-phosphate. The objectives of this study were to evaluate three commercially available P fertilizers, 0-16-19, 10-34-0, and 0-18-18 (N-P2O5-K2O) as starter band with and without the addition Cee*Quest-70 (CQ-70), a glucoheptonate chelate. The study was conducted at two locations, Scandia and Rossville, in 2014 and 2015. Experimental design was a randomized, complete block with ...


Evaluating The Interaction Between Chelated Iron Source And Placement On Phosphorus Availability In Soybean, C. L. Edwards, D. Ruiz Diaz Jan 2016

Evaluating The Interaction Between Chelated Iron Source And Placement On Phosphorus Availability In Soybean, C. L. Edwards, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

In agriculture, chelating agents are used to supplement micronutrients, such as iron (Fe). However, little research has been conducted at the field-scale level to evaluate chelating agent effects on phosphorus (P). The objectives of this study were to evaluate three commercially available chelated Fe sources on early soybean growth and nutrient uptake. The study was conducted at six locations in 2014 and 2015. The experimental design was a randomized, complete block with a factorial treatment arrangement. The two factors included fertilizer source and fertilizer placement. The fertilizer sources were P only, EDTA-Fe, HEDTA-Fe, and one glucoheptonate product, Cee*Quest N5Fe758 ...


Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond Jan 2016

Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond

Kansas Agricultural Experiment Station Research Reports

Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated corn in western Kansas. In 2015, N applied alone increased yields 70 bu/a, whereas P applied alone increased yields only 12 bu/a. Nitrogen and P applied together increased yields up to 129 bu/a. This is below the 10- year average, where N and P fertilization increased corn yields up to 144 bu/a. Applica­tion of 120 lb/a N (with P) produced about 98% of maximum yield in 2015, which is 5% more than the 10-year average. Application ...


Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond Jan 2016

Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond

Kansas Agricultural Experiment Station Research Reports

Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas. In 2015, N applied alone increased yields 66 bu/a, whereas N and P applied together increased yields up to 92 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 76 bu/a. Application of 40 lb/a N (with P) was sufficient to pro­duce 88% of maximum yield in 2015 which is slightly above the 10-yr average. Applica­tion of potassium (K) has had no effect on ...


Determining The Phosphorus Release For Natuphos E 5,000 G Phytase For Nursery Pigs, K. M. Gourley, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, S. S. Dritz, R. D. Goodband Jan 2016

Determining The Phosphorus Release For Natuphos E 5,000 G Phytase For Nursery Pigs, K. M. Gourley, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 286 nursery pigs (PIC 327 × 1050; initially 24.3 lb and d 42 of age) were used in a 21-d growth trial to determine the available P (aP) release curve for a novel phytase source (Natuphos E 5,000 G, BASF Corporation, Florham Park, NJ). Pigs were randomly allotted to pens at weaning. On d 0 of the experiment (d 18 after weaning), pens were allotted in a randomized complete block design to 1 of 8 treatments. There were 4 pigs per pen and 9 pens per treatment. Pigs were fed a corn-soybean meal-based diet formulated to ...


Evaluating The Effect Of Superdosing Natuphos E 5,000 G Phytase On Nursery Pig Performance, K. M. Gourley, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, S. S. Dritz, R. D. Goodband Jan 2016

Evaluating The Effect Of Superdosing Natuphos E 5,000 G Phytase On Nursery Pig Performance, K. M. Gourley, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 360 nursery pigs (DNA 200 × 400, initially 12.92 lb) were used in a 42-d growth trial to determine the effect of superdosing a novel phytase source (Natuphos E 5000 G, BASF Corporation, Florham Park, NJ). Pigs were randomly allotted to pens at weaning in a randomized complete block design to 1 of 8 dietary treatments. There were 5 pigs per pen and 9 pens per treatment. Diets were fed in 3 phases from d 0 to 7, 7 to 21, and 21 to 42. Dietary treatments were a negative control (NC) with 0.40, 0.30 ...