Deep Banding Increases Phosphorus Removal by Soybean Grown under No‐Tillage Production Systems

Hansel, Fernando Dubou; Diaz, D. A. Ruiz; Amado, Telmo Jorge Carneiro; Rosso, Luiz H. Moro

doi:10.2134/agronj2016.09.0533

Cited by 22 publications

(22 citation statements)

References 39 publications

(43 reference statements)

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“…There was no evidence that nutrient placement had an effect on corn or soybean yield for strip‐till (Table 1), which is in agreement with previous reports in corn (Fernández & White, 2012; Rehm & Lamb, 2004) and soybean (Farmaha et al., 2011; Hansel et al., 2017; Yin & Vyn, 2002). However, these results are in contrast with some studies that have reported a yield advantage with deep banding (Farmaha, Fernández, & Nafziger, 2012b; Kang et al., 2014).…”

Section: Resultssupporting

confidence: 90%

“…However, when fertilizer was applied in a subsurface band in STDB, STP levels at the 10‐ to 20‐cm depth at the IR position increased by 7.0–60.5 mg kg −1 over the 8 yr (Supplemental Figure 1c), with incline rates ranging from 2.02 to 7.5 mg kg −1 yr −1 ( R 2 = .28–.64) across the PK fertilizer rates. For the 20‐ to 30‐cm depth increment, fertilizer rates >125 kg PK ha −1 in STDB also increased soil P test levels below the application band, which has been observed in prior studies (Fernández & Schaefer, 2012; Hansel et al., 2017). It is likely that the increase in soil P test levels in this location is the result of downward movement of P with the highest fertilization rate.…”

Section: Resultssupporting

confidence: 83%

“…This difference was a direct result of the observed yield increases for these tillage/fertilizer placement treatments in each crop. However, in contrast to prior studies that found significantly greater PNB with banded P fertilization (Dhillon et al., 2017; Hansel et al., 2017; Peterson et al., 1981; Sander, Penas, & Eghball, 1990), we did not find an advantage of deep banding for PNB or AE compared with broadcast applications (STBC and STDB in Table 2), indicating a similar ability of nutrient removal and yield increase per unit of nutrient applied between the two fertilizer placement methods. This might be due to the optimal soil fertility starting conditions.…”

Section: Resultscontrasting

confidence: 80%

“…However, because many studies on fertilizer placement have reported conflicting results regarding crop performance in comparison to broadcast fertilizer, requirements for effective fertilizer placement remain unclear. Several studies have reported increased grain yield and nutrient accumulation with deep banding of fertilizers relative to broadcast (Farmaha, Fernández, & Nafziger, 2012a; Hansel, Diaz, Amado, & Rosso, 2017; Kang, Yue, & Shi‐qing, 2014; Nkebiwe, Weinmann, Bar‐Tal, & Muller, 2016), whereas others found no differences or inconsistent results (Bordoli & Mallarino, 1998; Randall & Vetsch, 2008; Yin & Vyn, 2002). As summarized by several reviews (Ma, Rengel, & Rose, 2009; Nkebiwe et al., 2016; Randall & Hoeft, 1988), the effectiveness of deep placement of fertilizers may be determined by factors including climatic condition, soil texture, tillage, fertilizing history, nutrient mobility, and crop species.…”

Section: Introductionmentioning

confidence: 99%

“…Hansel et al. (2017) found that STDB increased soil test P levels by 11–19% at the 15‐ to 25‐cm layer, whereas NTBC increased soil test P by 36–43 and 36% at the 0‐ to 5‐cm layer in Brazil in 2014 to 2015. Long‐term studies are lacking to evaluate the soil test P (STP) and soil test K (STK) levels over time at different depths and row positions under various P and K management strategies in conservation tillage.…”

Section: Introductionmentioning

confidence: 99%

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Soil and crop response to phosphorus and potassium management under conservation tillage

et al. 2020

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In conservation tillage systems, proper fertilizer phosphorus (P) and potassium (K) management is critical to optimize yield and minimize negative environmental impacts. The objective of this study was to assess the responses of crop yield, nutrient use efficiencies, root growth, and soil test P and K levels to tillage, fertilizer placement, and fertilizer rates in a corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] rotation.Experiments were conducted for 8 yr in Illinois with tillage/fertilizer placement as the main plot (no-till/broadcast [NTBC], strip-till/broadcast [STBC], and strip-till/deep band [STDB]) and PK fertilizer rates as the subplot. The NTBC treatment consistently reduced yields in corn by 6.2 and 4.5% and in soybean by 3.1 and 6.1% relative to STBC and STDB, respectively. Also, NTBC had greater root length density at inrow and between-row positions relative to STBC and STDB. Nutrient use efficiency indices (partial nutrient balance, agronomic efficiency, and partial factor productivity) declined with increasing P and K rates but were not affected by tillage/fertilizer placement treatments. Deep banding significantly reduced soil P and K concentrations in surface layers while increasing them at the depth of application. These results underscore the reported potential for deep banding combined with strip-till to improve conditions for nutrient uptake while reducing the risk for nutrient losses to the environment. Critical soil test P and K levels (21 mg P kg −1 and 217 mg K kg −1 ) were similar for P and greater for K than the current university recommendations, which highlights the need for continuous refinement of soil fertility recommendations to keep pace with changes in production technologies and yield levels.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 83%

Section: Resultscontrasting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil and crop response to phosphorus and potassium management under conservation tillage

et al. 2020

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Long‐term phosphate fertilization strategies evaluation in a Brazilian Oxisol

et al. 2020

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There are concerns related to the application of phosphate fertilizers to weathered soils that present low soil test phosphorus (STP) due to P adsorption in iron oxyhydroxides. Furthermore, long-term trials are needed to evaluate crop response to corrective P fertilization and its interaction with different maintenance P fertilization strategies in these soils. An experiment involving the combination of three initial corrective P fertilization schemes (control without P correction or with the application of 105 kg P ha −1 as triple superphosphate [TSP] or reactive rock phosphate [RRP]), four P maintenance strategies (a control without the application of maintenance P, or 35 kg P ha −1 yr −1 as TSP, RRP, or a mix of both) and two application methods was cultivated during 16 yr at the Embrapa Cerrados experimental station in Planaltina, DF, Brazil. Corrective P fertilization promoted an early crop yield response. In contrast, high crop yields were only obtained in control treatments with no corrective P fertilization after soil P stocks were increased to a minimum level. With increasing P stocks, broadcast application resulted in slightly better yields. The required residual P stocks in soil to obtain high yields were estimated as equivalent to 113.6 and 205.2 kg P ha −1 for TSP and RRP, respectively. These values allow for STP contents to increase to critical levels, whose value for TSP of 4.1 mg kg −1 Mehlich-1 P is below that recommended for the region, possibly due to the contribution of organic P forms in the long-term no-tillage system.

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