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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 ...


Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, D. Ruiz Diaz Jun 2017

Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

This study compared drilled planted sorghum at four seeding rates to planted sorghum at three different nitrogen (N) fertility levels at two locations in southwest Kansas (Garden City and Tribune). At the Garden City location, no difference was observed in yield among the drilled seeded sorghum populations greater than 27,000 seeds/a compared to the standard planted sorghum (sorghum planted at 27,000 seeds/a with a planter at 30 in.-row spacing). At Tribune, there was no difference in yield between the drilled sorghum and the standard planted sorghum (sorghum planted at 40,000 seeds/a with a ...


Corn Grain Yield Trends From 2012 To 2016: A 26-Year Long-Term Experiment, J. Rivera-Zayas, Charles Rice Jun 2017

Corn Grain Yield Trends From 2012 To 2016: A 26-Year Long-Term Experiment, J. Rivera-Zayas, Charles Rice

Kansas Agricultural Experiment Station Research Reports

Long-term research trials provide an understanding of long-term effects on crop production. This long-term research studied the effect of conventional tillage (CT) and no-tillage (NT) systems. Factors of this 22-year study of corn (Zea mays L.) production also included the application of nitrogen (N) in the forms of ammonium nitrate and manure at rates of 150 lb/N/a. Corn grain yield trends during 2012 to 2016 were affected by the interaction between N source and year (P < 0.05). The interaction between tillage practices and N source and the overall interaction between the last 5 years did not yield performance (P > 0.05). Under the studied conditions the 75 lb/N/a as N fertilizer or manure achieved high corn yields.


Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond Jun 2017

Long-Term 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 2016, N applied alone increased yields 71 bu/a, whereas N and P applied together increased yields up to 93 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 77 bu/a. Application of 80 lb/a N (with P) was sufficient to produce 89% of maximum yield in 2016 which is slightly less than the 10-yr average. Application of potassium (K) has had no effect on sorghum ...


Agricultural Bio-Stimulant Application To Enhance Phosphorus Availability In Grain Sorghum, A. Obour Jun 2017

Agricultural Bio-Stimulant Application To Enhance Phosphorus Availability In Grain Sorghum, A. Obour

Kansas Agricultural Experiment Station Research Reports

This study was conducted to determine the effectiveness of AgZyme and SuperHume (both products of Ag Concepts Corp) application on phosphorus (P) uptake and utilization efficiency in grain sorghum. Treatments were a control, 30 lb P2O5/a, 20 oz/a AgZyme, 20 oz/a AgZyme + 30 lb P2O5/a, 20 oz/a AgZyme + 30 lb P2O5/a + 6 qt/a SuperHume, which were arranged in a randomized complete block design with four replications. Preliminary results in 2016 showed grain sorghum aboveground biomass, grain moisture content, and test weight were not affected ...


Long-Term Tillage And Nitrogen Fertilization Effects On Soil Surface Chemistry, A. Obour, J. D. Holman Jun 2017

Long-Term Tillage And Nitrogen Fertilization Effects On Soil Surface Chemistry, A. Obour, J. D. Holman

Kansas Agricultural Experiment Station Research Reports

Long-term crop management practices can affect nutrient cycling and availability to crops. This study examined the long-term effects of nitrogen (N) fertilizer application (N rates of 0, 20, 40, and 60 lb N/a) and tillage intensity (conventional tillage (CT), reduced tillage (RT), and no-tillage (NT)) on soil phosphorus (P), micronutrients, and soil acidity in a dryland winter wheat (Triticum aestivum L.)–sorghum (Sorghum bicolor L.)–fallow cropping system. Results showed soil organic matter (SOM), iron (Fe), and zinc (Zn) concentrations were greater under NT compared to CT or RT. Similarly, NT ( 32 ppm) increased P accumulation in the upper ...


Biochar And Nitrogen Effects On Winter Wheat Growth, T. E. Zee, N. O. Nelson, G. Newdigger Jun 2017

Biochar And Nitrogen Effects On Winter Wheat Growth, T. E. Zee, N. O. Nelson, G. Newdigger

Kansas Agricultural Experiment Station Research Reports

Biochar, a co-product of thermochemical bioenergy production, may be a valuable soil amendment, but little is known about its potential long-term effects on plant growth and soil fertility. In order to gain more information, this experiment was performed to see if the addition of biochar, in comparison to lime and fertilizer treatments, has the potential to return key nutrients back to the soil or increase crop yield. A field study to investigate the effects of biochar on plant growth was initiated in 2011 near St. John, KS. Treatments included biochar applied at 16.6 ton/a (biochar), lime and annual ...


Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond Jun 2017

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 2016, N applied alone increased yields 85 bu/a, whereas P applied alone increased yields only 12 bu/a. Nitrogen and P applied together increased yields up to 164 bu/a. This is 20 bu/a greater than the 10-year average, where N and P fertilization increased corn yields up to 144 bu/a. Application of 120 lb/a N (with highest P rate) produced about 94% of maximum yield in 2016, which is similar to the ...


Kansas Fertilizer Research 2017 Jun 2017

Kansas Fertilizer Research 2017

Kansas Agricultural Experiment Station Research Reports

Reports on fertilizer and related topics from Kansas State University.


Palmer Amaranth (Amaranthus Palmeri) Suppression With Half Rates Of Dicamba And Atrazine With Increasing Sorghum (Sorghum Bicolor) Density And Nitrogen Rate, I. B. Cuvaca, R. Currie, A. J. Foster Jun 2017

Palmer Amaranth (Amaranthus Palmeri) Suppression With Half Rates Of Dicamba And Atrazine With Increasing Sorghum (Sorghum Bicolor) Density And Nitrogen Rate, I. B. Cuvaca, R. Currie, A. J. Foster

Kansas Agricultural Experiment Station Research Reports

Palmer amaranth (PA) competition can result in severe yield loss in grain sorghum. Increasing sorghum density and nutrient supply could promote early/rapid canopy closure and therefore reduce the amount of light that could otherwise penetrate the canopy and promote PA growth in sorghum. A study was conducted at the Southwest Research-Extension Center near Garden City, KS, to determine if PA could be suppressed with dicamba and atrazine applied as PRE at half rates combined with increasing sorghum density (60,000, 90,000, and 120,000 seeds/a), and nitrogen rate (0, 100, 200 lb/a). Preliminary results indicate that ...


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 ...


Forage Report 2015, J. D. Holman, Jane Lingenfelser, A. Obour, A. Esser, J. L. Moyer, G. Cramer, T. Roberts, S. Maxwell Jan 2017

Forage Report 2015, J. D. Holman, Jane Lingenfelser, A. Obour, A. Esser, J. L. Moyer, G. Cramer, T. Roberts, S. Maxwell

Kansas Agricultural Experiment Station Research Reports

In 2015 summer annual forage variety trials were conducted across Kansas near Garden City, Hays, Hutchinson, Mound Valley, and Scandia. All sites evaluated hay and silage entries, except Hutchinson, which only evaluated hay entries. Companies were able to enter varieties into any possible combinations of research sites, so not all sites had all varieties. Across the sites, a total of 30 hay varieties and 22 silage varieties were evaluated.


Timing Of Side-Dress Applications Of Nitrogen For Corn In Conventional And No-Till Systems, D. W. Sweeney, D. E. Shoup Jan 2017

Timing Of Side-Dress Applications Of Nitrogen For Corn In Conventional And No-Till Systems, D. W. Sweeney, D. E. Shoup

Kansas Agricultural Experiment Station Research Reports

Corn yields were affected by tillage and nitrogen (N) side-dress options in 2016. Corn yields were 12% greater with conventional tillage than with no-till. Side-dress applications of N at V10 resulted in greater corn yield than side-dress N applications at V6.


Wheat Production, Gretchen Sassenrath, D. E. Shoup, R. Lollato Jan 2017

Wheat Production, Gretchen Sassenrath, D. E. Shoup, R. Lollato

Kansas Agricultural Experiment Station Research Reports

Wheat production in southeast Kansas is often limited due to high rainfall during the harvest. In some years, this high rainfall can exacerbate disease pressure, especially fungal infections. This study presents results from a test of fungicide applications to control Fusarium head blight (FHB) or scab in poor quality wheat.


Alternative Cropping Systems With Limited Irrigation, A. Schlegel Jan 2017

Alternative Cropping Systems With Limited Irrigation, A. Schlegel

Kansas Agricultural Experiment Station Research Reports

A limited irrigation study involving four cropping systems and evaluating four crop rotations was initiated at the Southwest Research-Extension Center near Tribune, KS, in 2012. The cropping systems were two annual systems (continuous corn [C-C] and continuous grain sorghum [GS-GS]) and two 2-year systems (corn-grain sorghum [CGS]) and corn-winter wheat [C-W]). In 2016, corn yields were similar in all rotations, as were grain sorghum yields. This tended to agree with the 4-yr average yields, except for average grain sorghum yields being higher following corn than grain sorghum.


Palmer Amaranth (Amaranthus Palmeri) Suppression With Half Rates Of Dicamba And Atrazine With Increasing Sorghum (Sorghum Bicolor) Density And Nitrogen Rate, I. B. Cuvaca, R. Currie, A. J. Foster Jan 2017

Palmer Amaranth (Amaranthus Palmeri) Suppression With Half Rates Of Dicamba And Atrazine With Increasing Sorghum (Sorghum Bicolor) Density And Nitrogen Rate, I. B. Cuvaca, R. Currie, A. J. Foster

Kansas Agricultural Experiment Station Research Reports

Palmer amaranth (PA) competition can result in severe yield loss in grain sorghum. Increasing sorghum density and nutrient supply could promote early/rapid canopy closure and therefore reduce the amount of light that could otherwise penetrate the canopy and promote PA growth in sorghum. A study was conducted at the Southwest Research-Extension Center near Garden City, KS, to determine if PA could be suppressed with dicamba and atrazine applied as PRE at half rates combined with increasing sorghum density (60,000, 90,000, and 120,000 seeds/a), and nitrogen rate (0, 100, 200 lb/a). Preliminary results indicate that ...


Southwest Research-Extension Center, Kansas State University, Staff, Acknowledgments, R. Gillen Jan 2017

Southwest Research-Extension Center, Kansas State University, Staff, Acknowledgments, R. Gillen

Kansas Agricultural Experiment Station Research Reports

2017 Southwest Research-Extension Center Faculty and Staff. Acknowledgments.


Cover Crop Effects On Corn In A Corn/Soybean Rotation, D. E. Shoup, I. A. Ciampitti, J. Kimball, Gretchen Sassenrath Jan 2017

Cover Crop Effects On Corn In A Corn/Soybean Rotation, D. E. Shoup, I. A. Ciampitti, J. Kimball, Gretchen Sassenrath

Kansas Agricultural Experiment Station Research Reports

A research study was established in 2013 in a corn and soybean rotation with cover crops planted soon after each crop harvest. A variety of complex cover crop mixtures were evaluated ranging from single-specie to 7-specie mixtures. Cover crops were terminated in the spring prior to corn planting. Corn yield responded differently among the three years of the study. In general, 2014 and 2016 showed a similar trend of decreased corn yield as the complexity of cover crop specie mixtures increased. Significant corn yield losses ranged from 8.6 to 15.1 bu/a across all cover crop treatments in ...


Double Crop Soybean After Wheat, D. S. Hansel, J. Kimball, D. E. Shoup, I. A. Ciampitti Jan 2017

Double Crop Soybean After Wheat, D. S. Hansel, J. Kimball, D. E. Shoup, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Two double crop (DC) soybean studies were conducted at Ottawa, KS, during the 2016 growing season. Soybean cultivar Asgrow 4232 (MG 4.2) was planted immediately after two different wheat harvest timings (Study 1: early-wheat harvest 18-20% seed moisture content, and Study 2: conventional-harvest, 13-14% seed moisture content). Seven treatments were evaluated in each of the soybean planting dates: 1) common practice, 2) no seed treatment (without seed fungicide + insecticide treatment), 3) non-stay green (without foliar fungicide + insecticide application), 4) high seeding rate (180,000 seeds per acre), 5) wide rows (30-inch row spacing), 6) nitrogen (N) fixation (without late ...


Winter Annual Grass Control In Winter Wheat, D. E. Peterson, C. Thompson, C. L. Minihan Jan 2017

Winter Annual Grass Control In Winter Wheat, D. E. Peterson, C. Thompson, C. L. Minihan

Kansas Agricultural Experiment Station Research Reports

Winter annual grasses can be difficult to manage in winter wheat. A field experiment was established near Manhattan, KS, in 2016 to evaluate various preemergence and postemergence herbicide treatments for control of downy brome, cheat, and feral rye. Most treatments were less effective for control of downy brome than cheat. Preemergence and fall postemergence treatments provided better downy brome control than spring postemergence treatments. All herbicide treatments evaluated provided excellent control of cheat, but postemergence treatments were slightly better than preemergence treatments. The only herbicide to control rye was Beyond, which provided better control when applied fall postemergence than spring ...


Kansas Field Research 2017, Kansas State University Jan 2017

Kansas Field Research 2017, Kansas State University

Kansas Agricultural Experiment Station Research Reports

Kansas Agricultural Experiment Station Research Reports from research field locations.


Irrigated Corn Response To Long-Term Nitrogen And Phosphorus Fertilization, A. Schlegel, H. D. Bond Jan 2017

Irrigated Corn Response To Long-Term Nitrogen And Phosphorus Fertilization, 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 the production of irrigated corn in western Kansas. In 2016, N applied alone increased yields by 85 bu/a, whereas P applied alone increased yields by only 12 bu/a. Nitrogen and P applied together increased yields up to 164 bu/a. This is 20 bu/a greater than the 10-year average, where N and P fertilization increased corn yields up to 144 bu/a. Application of 120 lb/a N (with the highest P rate) produced about 94% of maximum yield in 2016, which ...


Rates Of Armezon Pro For Postemergence Weed Control In Fallow, R. Currie, P. Geier Jan 2017

Rates Of Armezon Pro For Postemergence Weed Control In Fallow, R. Currie, P. Geier

Kansas Agricultural Experiment Station Research Reports

A study was initiated near Garden City, KS, in 2016, comparing the weed control of several tank mixes of Armezon in fallow. Control of kochia and Russian thistle generally increased as Armezon Pro (topramezone + dimethenamid) rates increased from 14 to 20 oz/a. Although these herbicides injured the weeds present, smaller weeds will need to be targeted for effective control. The population of kochia was too thick and the size of the weeds was too large to allow enough coverage for this product to work under the conditions of this trial. The level of tissue damage suggests that further testing ...


Crop Production Summary, Southeast Kansas – 2016, Gretchen Sassenrath, L. Mengarelli, Jane Lingenfelser, X. Lin, D. E. Shoup Jan 2017

Crop Production Summary, Southeast Kansas – 2016, Gretchen Sassenrath, L. Mengarelli, Jane Lingenfelser, X. Lin, D. E. Shoup

Kansas Agricultural Experiment Station Research Reports

Crop production in southeast Kansas is summarized from variety trials and research plot experiments conducted at the Southeast Research and Extension Center fields in 2016.


Annual Summary Of Weather Data For Parsons, M. Knapp Jan 2017

Annual Summary Of Weather Data For Parsons, M. Knapp

Kansas Agricultural Experiment Station Research Reports

Annual Summary of Weather Data for Parsons, Kansas, 2016.


Searc Agricultural Research 2017, L. W. Lomas Jan 2017

Searc Agricultural Research 2017, L. W. Lomas

Kansas Agricultural Experiment Station Research Reports

Southeast Agricultural Research Center, Agricultural Research 2017. Topics include grazing and supplemental feed for beef cattle, forage, pasture, hay, grasses, legumes, tillage, fertilizer, corn, soybeans, wheat, and soil health and variability.


Clarity, Laudis, Diflexx Duo, Atrazine, And Glyphosate For Efficacy In Corn, R. Currie, P. Geier Jan 2017

Clarity, Laudis, Diflexx Duo, Atrazine, And Glyphosate For Efficacy In Corn, R. Currie, P. Geier

Kansas Agricultural Experiment Station Research Reports

A study was initiated near Garden City, KS, in 2016 comparing the weed control of several herbicide treatments in irrigated corn. Control of quinoa, Russian thistle, and kochia was excellent with all herbicide treatments, and late-season control of common sunflower was 100% with all treatments except for those applied preemergence alone. Most treatments controlled green foxtail 95% or more, except Corvus (isoxaflutole + thiencarbazone) plus atrazine preemergence, or the early postemergence (EPOST) treatments containing Liberty 280 (glufosinate). Liberty 280 severely injured the non- Liberty Link corn in this trial, but all other herbicide-treated corn yielded 21 to 45 bu/a more ...


Weather Reports For Research Field Locations, M. Knapp Jan 2017

Weather Reports For Research Field Locations, M. Knapp

Kansas Agricultural Experiment Station Research Reports

Weather Reports for Research Field Locations in Kansas 2016: Ashland Bottoms, Belleville, Colby, Conway Springs, Ellsworth, Hays, Hutchinson, Manhattan, McPherson, Perry and Scandia.


Tillage Study For Corn And Soybean: Comparing Vertical, Deep, And No-Tillage, Eric Adee Jan 2017

Tillage Study For Corn And Soybean: Comparing Vertical, Deep, And No-Tillage, Eric Adee

Kansas Agricultural Experiment Station Research Reports

A tillage study comparing no-tillage, shallow tillage, and deep tillage in alternate or every year for corn and soybeans in annual rotation was conducted at Kansas River Valley Experiment Field for five years. The influence of tillage system on corn yield appears to be increasing with time, soybean yields appear to perform equally well with any of the systems. As the study progresses, the corn yields were increased with deep tillage occurring sometime in the cropping rotation.


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 ...