Life Sciences | Open Access Articles | Digital Commons Network™

Assessing The Impact Of The 4r Nutrient Management On Nitrogen Use Efficiency In Corn, Pedro Morinigo, Dorivar A. Ruiz Diaz Jan 2023

Assessing The Impact Of The 4r Nutrient Management On Nitrogen Use Efficiency In Corn, Pedro Morinigo, Dorivar A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Determining the best management practices for nitrogen (N) fertilizer application to corn is crucial to achieving the objectives of the 4R of nutrient stewardship. Although producers have a wide range of options regarding N fertilization, identifying the right rate, source, placement, and timing (4R) can significantly impact productivity and nitrogen use efficiency. Our objectives were to evaluate the nitrogen agronomic efficiency (NAE), and the corn grain yields as affected by different rates, sources, placements, and timing methods of N fertilizer application under rainfed and irrigated conditions in Kansas. Two rainfed locations in Riley and Republic counties and two irrigated locations …

Go to article

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 …

Go to article

Southwest Research-Extension Center Field Day 2019, R. Gillen Jan 2019

Southwest Research-Extension Center Field Day 2019, R. Gillen

Kansas Agricultural Experiment Station Research Reports

Agricultural research was conducted at the Southwest Research-Extension Center in Kansas. Topics include cropping, tillage, soil fertility, and weed science.

Go to article

Southwest Research-Extension Center Reports: Field Day 2017, R. Gillen Jan 2017

Southwest Research-Extension Center Reports: Field Day 2017, R. Gillen

Kansas Agricultural Experiment Station Research Reports

Full report of agricultural research for 2017 for the Kansas Southwest Research-Extension Center. Field Day 2017.

Go to article

Long-Term No-Till In A Wheat-Sorghum-Fallow Rotation, A. Schlegel, L. Stone Jan 2015

Long-Term No-Till In A Wheat-Sorghum-Fallow Rotation, A. Schlegel, L. Stone

Kansas Agricultural Experiment Station Research Reports

Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation. In 2014, available soil water at wheat planting was 2 inches greater for no-till (NT) than for reduced-tillage (RT) or conventional tillage (CT). For grain sorghum in 2014, available soil water at planting was greatest with RT and least with CT. Averaged across the 14-year study, available soil water at wheat and sorghum planting was similar for RT and NT and about 1 inch greater than CT. Averaged across the past 14 years, NT wheat yields were 5 bu/a greater than RT and …

Go to article

Large-Scale Dryland Cropping Systems, A. Schlegel Jan 2015

Large-Scale Dryland Cropping Systems, A. Schlegel

Kansas Agricultural Experiment Station Research Reports

A large-scale dryland cropping systems research and demonstration project at the Southwest Research-Extension Center near Tribune, Kansas, evaluated two summer crops (corn and grain sorghum) along with winter wheat in crop rotations varying in length from 1 to 4 years. The rotations were continuous grain sorghum, wheat-fallow, wheat-corn-fallow, wheat-sorghum-fallow, wheat-corn-sorghum-fallow, and wheatsorghum- corn-fallow. The objective of the study is to identify cropping systems that enhance and stabilize production in rain-fed locations to optimize economic crop production. Averaged across the past 7 years, wheat yields ranged from 22 to 25 bu/a and were not affected by length of rotation. Corn and …

Go to article

Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond Jan 2015

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

Kansas Agricultural Experiment Station Research Reports

(Abstract only. Link to:http://newprairiepress.org/kaesrr/vol1/iss3/6/) Article is nearly identical to
Long-Term Nitrogen and Phosphorus Fertilization of Irrigated Grain Sorghum, previously published in Kansas Fertilizer Research 2015, included in this PDF.

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 2014, N applied alone increased yields 49 bu/a, whereas N and P applied together increased yields up to 81 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 73 bu/a. Application of 40 lb/a N (with P) was …

Go to article

Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond Jan 2015

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

Kansas Agricultural Experiment Station Research Reports

(Abstract only. Link to: http://newprairiepress.org/kaesrr/vol1/iss3/7/)
Article is nearly identical to Long-Term Nitrogen and Phosphorus Fertilization of Irrigated Corn, previously published in Kansas Fertilizer Research 2015, included in this PDF.

Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated corn in western Kansas. In 2014, N applied alone increased yields 58 bu/a, whereas P applied alone increased yields only 12 bu/a. Nitrogen and P applied together increased yields up to 152 bu/a. This is slightly above the 10-year average, when N and P fertilization increased corn yields up to 146 bu/a. Application …

Go to article

Teff Grass Response To Nitrogen Fertilization, J. D. Holman, D. H. Min, S. Maxwell Jan 2015

Teff Grass Response To Nitrogen Fertilization, J. D. Holman, D. H. Min, S. Maxwell

Kansas Agricultural Experiment Station Research Reports

Teff, a warm season annual grass native to Africa, is gaining popularity as a forage crop in the United States. Little information regarding nitrogen fertilization is available for teff grass production. This field experiment was conducted to evaluate teff grass response to varying nitrogen fertilization rates under dryland conditions. There was no yield response to increasing nitrogen rate or nitrogen source applied.

Go to article

Southwest Research-Extension Center Field Day 2014 Jan 2014