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

Reed, Vaughn; Watkins, Patrick; Souza, João Luís Bigatão; Arnall, Daryl B.

doi:10.1002/cft2.20133

Cited by 4 publications

(9 citation statements)

References 20 publications

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“…As the depths approached the surface, the M3P values increased as well, detailing stratification in the nutrient availability. Relative yield across all data points ranged from 0.29 to 1.58, with only four of the seven locations responding to the addition of P fertilizer (data not shown) (Reed et al., 2021).…”

Section: Resultsmentioning

confidence: 99%

“…Not all treatments included in the trial were used in the analysis of this study, as some treatments were not yield limiting. Therefore, the treatments that were used for this study were all treatments from nonresponsive locations, and treatments that were at or above the rate that maximized yield in Reed et al (2021). These treatments were the 67 kg ha −1 at Red Rock 1, 56 kg ha −1 at Red Rock 2, and 34 kg ha −1 at Waukomis 2.…”

Section: Methodsmentioning

confidence: 99%

“…The data used in this study are a subset of data presented in Reed et al. (2021). Data were collected from across seven producer‐managed on‐farm locations across the 2014–2015 and 2015–2016 growing seasons.…”

Section: Methodsmentioning

confidence: 99%

“…Most universities rely upon P fertilizer recommendations built on correlation/calibration studies conducted in conventional tillage systems. While some work suggests that the use of conventional tillage P recommendations are adequate for no‐till management systems (Reed et al., 2021), researchers are still interested in determining if altering the soil sampling scheme could lead to increased accuracy. The objective of this study was to determine the soil sampling depth that had the greatest relationship with P yield response in winter wheat ( Triticum aestivum L.).…”

Section: Introductionmentioning

confidence: 99%

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Soil sampling depth impact on phosphorus yield response prediction in winter wheat

Reed

Finch

Souza

et al. 2022

Agricultural & Env Letters

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Nutrient stratification of no-till managed soil can affect soil test analysis levels of plant-available phosphorus (P). Research has suggested sampling to different depths due to soil acidity, but little work has been conducted to investigate any change to sampling recommendations for immobile nutrients. The objective of this study was to determine the soil sampling depth that had the greatest relationship with yield response to fertilizer-P. The depths sampled in this study were 0-5, 0-10, 0-15, 10-30, 5-10, 5-15, 10-15, and 15-30 cm. The results indicated that the top 15 cm of a soil profile had the greatest amount of Mehlich 3 extractable P (M3P) available and that the 5-to-10 and 5-to-15-cm depths had the highest correlation with relative yield. Soil depths outside of the proposed root zone of winter wheat (Triticum aestivum L.) (15-30 cm) had the lowest correlation with yield response. INTRODUCTIONNutrient stratification can affect soil test analysis levels of plant-available phosphorus (P). Increased nutrient stratification occurs in areas where no-till managed soils are not constantly being inverted by tillage practices. Stratification of nutrients has been well documented in notill scenarios (Hansel et al., 2017;Howard et al., 1999;Souza, 2020;Wright et al., 2007). This begs researchers to question if altering current soil sampling strategies could lead to more accurate representation of plant-available nutrients.Research has suggested different depths for sampling for soil acidity for more accurate liming recommendations. Reeves and Liebig (2016) suggested a depth of 7.6 cm for soil pH, as most acidification due to fertilizer inputs occurs Abbreviations: M3P, Mehlich 3 extractable phosphorus.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil sampling depth impact on phosphorus yield response prediction in winter wheat

Reed

Finch

Souza

et al. 2022

Agricultural & Env Letters

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“…The lack of response to P fertilizers under the low STP conditions at the N40 location has been reported by Reed et al . (2021) but the cause remains unknown. The limited responses to P fertilization in P-deficient soils are unique, as other studies have reported increases in yield by correcting P deficiencies (Bushong et al ., 2014; Chatterjee and Franzen, 2020).…”

Section: Discussionmentioning

confidence: 99%

Impact of in-furrow fertilizers on winter wheat grain yield and mineral concentration

Finch

Reed²,

Williams³

et al. 2022

J. Agric. Sci.

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Placement of fertilizer in the seed furrow to increase nutrient availability is a common practice in row-crop production. While in-furrow application of fertilizer is widely utilized in the production of winter wheat (Triticum aestivum L.), there is a lack of work evaluating new formulations and nutrient combinations that are available. The objective of this study was to quantify the effects of in-furrow fertilizer products and combinations of products on winter wheat grain yield, nitrogen and mineral concentrations. Trials were conducted across five site-years in central Oklahoma using 11 fertilizer formulations placed in-furrow at the time of planting. In locations that soil test phosphorus (STP) levels or potassium were above sufficiency, the use of in-furrow fertilizers did not improve yield over the control. Inconsistency of response was noted at locations where STP levels were below the critical threshold. While one location showed no response to the addition of P regardless of source, two other locations had significant yield responses from three or more P-containing fertilizers. The addition of both sulphur and zinc resulted in increased yield over the base product at one low STP location. Nutrient concentrations were also influenced in nutrient-limited soils; however, no trends in response were present. Based upon the results of this study, the application of in-furrow fertilizer has the potential to increase winter wheat grain yield and nutrient concentration, when soil nutrients are limiting. As expected the addition of fertilizer when soil test levels are at or above a sufficiency did not increase grain yield.

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Soil biological and physical measurements did not improve the predictability of corn response to phosphorus fertilization

Groebner,

Clark,

Svedin

et al. 2024

Agronomy Journal

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Including soil health and physical measurements with traditional soil fertility measurements has the potential to improve corn (Zea mays L.) P fertilizer recommendations. The objectives for this study were to (1) evaluate the accuracy of current South Dakota corn P recommendations in predicting yield increases and (2) determine if the predictability of yield response to P fertilization improves by including selected soil biological, physical, and chemical measurements. This project was conducted in central and eastern South Dakota from 2019 to 2022 at 117 experimental sites that varied in management, landform, and soil type. A treatment of 48.9 kg P2O5‐P ha−1 was compared to a control with no P fertilizer. Soil samples (0–15 cm) collected before fertilization were analyzed for selected soil physical, chemical, and biological parameters. Analysis suggested that the current critical P value of 16 mg Olsen‐P kg−1 was still accurate as it was still within the 68% confidence interval for the linear (12–19 mg kg−1) and quadratic plateau (16–26 mg kg−1) models. Using the critical value of 16 mg Olsen‐P kg−1, we correctly predicted P responsiveness 70% of the time. The accuracy of predicting P responsiveness was not further improved by considering selected enzymes, permanganate oxidizable C, soil respiration, total C, or total N, but was improved by considering pH, soil organic matter, and apparent cation exchange capacity. Therefore, the use of typical soil fertility measurements without soil physical and biological measurements is currently the best option for predicting the responsiveness of corn to P fertilization in South Dakota.

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

Cited by 4 publications

References 20 publications

Soil sampling depth impact on phosphorus yield response prediction in winter wheat

Soil sampling depth impact on phosphorus yield response prediction in winter wheat

Impact of in-furrow fertilizers on winter wheat grain yield and mineral concentration

Soil biological and physical measurements did not improve the predictability of corn response to phosphorus fertilization

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