Optimum Timing and Rate of Trinexapac‐ethyl to Reduce Lodging in Spring Wheat

Wiersma, J. V.; Dai, Ji; Durgan, Bev R

doi:10.2134/agronj2010.0398

Cited by 40 publications

(61 citation statements)

References 36 publications

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“…Increased wheat grain yield following PGR application was also reported by Matysiak (2006) and Penckowski et al (2009). In contrast, Rajala and Peltonen‐Sainio (2002), Wiersma et al (2011), and Knott et al (2016) did not observe increased grain yield following PGR applications. In the present study, PGR increased yield even when lodging was minimal or nonexistent perhaps due to physiological changes within the plant as increased tiller density following PGR application has been reported in multiple wheat cultivars and cool‐season turfgrasses (Ervin and Koski, 2001; Hafner, 2001; Rajala and Peltonen‐Sainio, 2001).…”

Section: Wheat Grain Yield Response To Plant Growth Regulator and Nitcontrasting

confidence: 56%

“…Multiple researchers have reported decreased height and decreased lodging following PGR application to wheat (Matysiak, 2006; Nolte, 2007; Penckowski et al, 2009; Wiersma et al, 2011; Knott et al, 2016). Decreased lodging was attributed to increased stalk strength, as well as decreased plant height (Matysiak, 2006).…”

Section: Using Plant Growth Regulators To Improve Small Grains Producmentioning

confidence: 99%

“…Feekes 7 or 8 PGR application timings at the 12 oz/ac rate did not impact lodging incidence (data not shown), but lodging severity increased with later applications ( P = 0.09 in 2013 and 0.10 in 2014). Wiersma et al (2011) determined that PGR reduced lodging incidence when applied at Feekes 5 as compared to Feekes 8. Decreased plant height and reductions in lodging are often related and attributed to increased stem strength and diameter (Hafner, 2001; Matysiak, 2006; Wiersma et al, 2011).…”

Section: Plant Growth Regulator Effects On Greenness Height and Lodmentioning

confidence: 99%

“…Wiersma et al (2011) determined that PGR reduced lodging incidence when applied at Feekes 5 as compared to Feekes 8. Decreased plant height and reductions in lodging are often related and attributed to increased stem strength and diameter (Hafner, 2001; Matysiak, 2006; Wiersma et al, 2011). To take full advantage of lodging protection, growers may be advised to apply PGR earlier in the growing season (i.e., Feekes 5–6).…”

Section: Plant Growth Regulator Effects On Greenness Height and Lodmentioning

confidence: 99%

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Plant Growth Regulator and Nitrogen Applications for Improving Wheat Production in Michigan

Swoish

Steinke

2017

Crop Forage & Turfgrass Mgmt

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Core Ideas Averaged across all plant growth regulator (PGR) application rates and timings, grain yields increased 5% across the four study years compared to no PGR application. Plant growth regulator applied at 12 oz/ac decreased lodging 67 to 83% compared to untreated plots in all three years that lodging occurred. Rates >12 oz/ac decreased plant height an additional 1.6 to 1.8 inches but offered no yield benefit. Despite a lack of consistent yield response, if a grower encounters a high‐yielding, intensively managed variety that is prone to lodging, then a PGR application might be a crop management tool to consider. To improve wheat (Triticum aestivum L.) production and harvestability in Michigan, growers are increasing nitrogen rates and utilizing plant growth regulators (PGR). The effects of PGR application rate and timing (Deckerville, MI, 2012–2013) and PGR application across N rates (Lansing, MI, 2014–2015) on wheat growth and grain yield were investigated. Plant growth regulator applications (12 oz/ac) significantly reduced mature plant height (2.0–4.2 inches) across all four site years. Application rates >12 oz/ac resulted in greater height reductions but offered no yield benefit. Plant lodging was significantly reduced (50–83%) following PGR application in all years except 2015, when no lodging occurred. Grain yield was significantly increased by 6.0 and 4.8 bu/ac in 2012 and 2014 following PGR application at 12 oz/ac. Timing of PGR application (Feekes 7 or 8) did not significantly affect grain yield in 2012 or 2013, but earlier applications increased grain yield. No interactions between N rate and PGR application were observed in 2014 or 2015. Results indicated that PGR application decreased the incidence of plant lodging in years where lodging occurred. Motives for utilizing a PGR in a wheat management regime may depend more on cultivar susceptibility to plant lodging and average plant height with less emphasis based solely on greater N application rates as the latter did not consistently result in taller plants.

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Section: Wheat Grain Yield Response To Plant Growth Regulator and Nitcontrasting

confidence: 56%

Section: Using Plant Growth Regulators To Improve Small Grains Producmentioning

confidence: 99%

Section: Plant Growth Regulator Effects On Greenness Height and Lodmentioning

confidence: 99%

Section: Plant Growth Regulator Effects On Greenness Height and Lodmentioning

confidence: 99%

See 2 more Smart Citations

Plant Growth Regulator and Nitrogen Applications for Improving Wheat Production in Michigan

Swoish

Steinke

2017

Crop Forage & Turfgrass Mgmt

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“…The common view is to consider the height of the plant as the main target for preventing lodging (Wiersma et al, 2011). Many breeders therefore focused on selecting dwarfing genes to reduce lodging susceptibility and increase potential yields through chemical and agronomic practices.…”

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confidence: 99%

Effect of Selected Plant Growth Regulators on Yield and Stem Height of Spring Wheat in Ontario

Zhang¹,

Su²,

Tabori³

et al. 2017

JAS

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Lodging is an important limiting factor in wheat because it affects growth, yield and grain quality. Plant growth regulators (PGRs) are often used to restrain elongation of internodes, improve lodging traits, and protect yield potentials. An experiment was set up in the greenhouse at the Ottawa Research and Development Centre (ORDC) to study the effect of the selected PGRs (Manipulator, the active ingredient of which is chlormequat; and Palisade, the active ingredient of which is trinexapac-ethyl) on yield, stem height and morphological traits in six spring wheat cultivars (AC Carberry, AAC Scotia, Hoffman, Fuzion, FL62R1, and AW725). Both PGRs reduced plant height and caused a 6% to 48% reduction in the length of the second basal internode. The mixture of the two PGRs had a synergistic affect and made the stem shorter. The application of PGRs significantly reduced lodging, increased stem diameter, thickness, filling degree, and stem strength, and increased leaf relative chlorophyll content. However, application of PGRs significantly reduced grain yield, and the combination of the two PGRs (Manipulator and Palisade) had a synergistic effect and lowered the yield. In general, the effect of Palisade was more evident than that of Manipulator.

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Integrating multiple inputs for soft red and white winter wheat

2021

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Michigan winter wheat (Triticum aestivum L.) growers continue to adopt intensive management strategies. However, instead of broadscale implementation of an entire collection of inputs simultaneously, practitioners question which inputs may better contribute to improved production. Studies evaluated soft winter wheat plant growth, grain yield, and expected economic net return for multiple agronomic and nutrient inputsacross varying production intensities. Field trials established in Richville and Lansing, MI, during 2017 and 2018 evaluated six agronomic inputs including: seeding rate, fungicide, plant growth regulator (PGR), autumn starter fertilizer, weekly nitrogen (N) applications, and a high N rate. Autumn-applied starter fertilizer was the only individual input resulting in a consistent grain yield response. Removal of autumn starter fertilizer from high-input (HI) management decreased grain yield an average of 1.6 Mg ha -1 while increasing grain yield 1.1 Mg ha -1 on average when added to low-input (LI) management. Autumn starter fertilizer accounted for 71% of the grain yield difference between HI and LI. Although greater management intensity increased grain yield compared to LI management in 3 of 4 site-years, expected net return was greater when utilizing LI management. Results suggest producers consider current soil, plant, and climate conditions at the time of application and across variabilities through the field as weather factors may control much of the uncertainty growers encounter when deliberating between individual or multiple input adoption.

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Optimum Timing and Rate of Trinexapac‐ethyl to Reduce Lodging in Spring Wheat

Cited by 40 publications

References 36 publications

Plant Growth Regulator and Nitrogen Applications for Improving Wheat Production in Michigan

Plant Growth Regulator and Nitrogen Applications for Improving Wheat Production in Michigan

Effect of Selected Plant Growth Regulators on Yield and Stem Height of Spring Wheat in Ontario

Integrating multiple inputs for soft red and white winter wheat

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