Comparison of Phosphorus Use Efficiency Among Various Winter Wheat Accessions Grown in Acid and Calcareous Soils

Penn, Chad J.; Bell, Patrick; Carver, Brett F.; Arnall, Daryl B.; Klatt, A. R.

doi:10.1080/01904167.2015.1009103

Cited by 2 publications

(1 citation statement)

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“…The cultivars planted at Waukomis 3 and 1 were Gallagher and Garrison, which are both rated to have extremely high Al tolerance, greater than any other cultivars in the study (Oklahoma Genetics Inc., 2020). Penn et al (2015) evaluated the phosphorus use efficiency (PUE) of multiple winter wheat accessions and concluded that the mechanism of high PUE may be attributed to plant tolerance of soil acidity. While authors cannot confirm the impact of cultivar selection on the response to P fertilizer, it is hypothesized that these cultivars being highly tolerant may have contributed to a lack of measurable grain yield response.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of incorporated phosphorus fertilizer recommendations on no‐till managed winter wheat

Reed

Watkins

Souza

et al. 2021

Crop Forage & Turfgrass Mgmt

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The current Oklahoma State University Soil, Water, and Forage Analytical Laboratory (OSU) phosphorus (P) recommendations were developed for conventional tillage systems with P fertilizer incorporated in the soil. The rate recommendations were based on a sufficiency approach, and included a pH adjustment factor. Increased adoption of no-till (NT) management across the region has resulted in more surface application of fertilizer, without concomitant changes in OSU recommendations. In the 2014-2015 and 2015-2016 growing seasons, nine on-farm trials were conducted in north-central Oklahoma to evaluate current winter wheat (Triticum aestivum L.) P recommendations, and grain yield responses to fertilizer in both P-sufficient and P-deficient soils, and acidic or non-acidic conditions. Phosphorus fertilizer was recommended for eight of the nine locations, while responses were recorded at only five of those eight locations. The results indicate that OSU P recommendations, with a soil acidity adjustment factor, did not limit winter wheat grain yields in NT management. In addition, the application of 30 lb acre -1 P 2 O 5 offset the effects of soil acidity on P uptake regardless of the degree of acidity. Finally, OSU recommended P on some locations where there was no response, suggesting more work is needed to understand crop response dynamics and build recommendations with increased location specificity.

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Section: Resultsmentioning

confidence: 99%