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Agronomy and Crop Sciences

Kansas Agricultural Experiment Station Research Reports

2015

Phosphorus fertilization

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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 …


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 …