2020
DOI: 10.1139/cjps-2019-0276
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Response of canola, wheat, and pea to foliar phosphorus fertilization at a phosphorus-deficient site in eastern Saskatchewan

Abstract: Foliar fertilization is a potential strategy to supplement P requirements when conditions permit. In 2016 and 2017, canola, pea and wheat were grown in a randomized complete block design trial near Pilger, Saskatchewan, Canada, along with a completely randomized design controlled environment experiment that was conducted with the same soil in the winter of 2016. Each crop received a total P application of 20 kg P2O5 ha-1, with varying proportions of the P applied as seed placed monoammonium phosphate (MAP) sup… Show more

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Cited by 9 publications
(14 citation statements)
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“…Although foliar-applied P appears to be effectively taken up by wheat leaves and can increase biomass for some treatments in a controlled environment, a translation to increased grain yield was not measured in the field. Lack of grain-yield response to foliar-applied P in wheat in the field has been reported before (Sherchand and Paulsen 1985;Mosali et al 2006;Froese et al 2020) and is in line with the inconclusive results reviewed by Noack et al (2010), and with more recent investigations where grain P concentrations (Ali et al 2014) or P-use efficiency (Froese et al 2020) were increased as a result of foliar applications but no benefits in yield were found. Overall, 50% of the experiments reported in the literature (including both controlled environment and field experiments) have been non-responsive (Noack et al 2010).…”
Section: Field Experiments: Testing Formulations Timing and Ratessupporting
confidence: 85%
See 1 more Smart Citation
“…Although foliar-applied P appears to be effectively taken up by wheat leaves and can increase biomass for some treatments in a controlled environment, a translation to increased grain yield was not measured in the field. Lack of grain-yield response to foliar-applied P in wheat in the field has been reported before (Sherchand and Paulsen 1985;Mosali et al 2006;Froese et al 2020) and is in line with the inconclusive results reviewed by Noack et al (2010), and with more recent investigations where grain P concentrations (Ali et al 2014) or P-use efficiency (Froese et al 2020) were increased as a result of foliar applications but no benefits in yield were found. Overall, 50% of the experiments reported in the literature (including both controlled environment and field experiments) have been non-responsive (Noack et al 2010).…”
Section: Field Experiments: Testing Formulations Timing and Ratessupporting
confidence: 85%
“…There is scope to investigate the effectiveness of other P formulations as foliar fertilisers because the accompanying cation and formulation pH can affect foliar P uptake (Koontz and Biddulph 1957). Previous studies have investigated the influence of replacing hydrogen from phosphoric acid with ammonium, sodium or potassium (K) and altering the pH (Tukey et al 1956), but more recent evaluations of formulations is considered a gap (Froese et al 2020). It is generally accepted that a low formulation pH of 2-3 facilitates more rapid uptake of foliar P (Swanson and Whitney 1953;Tukey et al 1961;Bouma 1969), although it is often associated with necrotic spots and high leaf burn.…”
Section: Introductionmentioning
confidence: 99%
“…Sufficient amounts of phosphorus taken by plants are also necessary for an optimal production yield. In the case of low P supplies in the soil or conditions decreasing its intake by plants, fertilization by phosphorus significant increases not only legume production, but also its quality [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. One of the phosphorus forms naturally presented in plants is phytic acid.…”
Section: Introductionmentioning
confidence: 99%
“…In these aforementioned conditions, the foliar P application has a potential to increase the yield and quality of seeds [ 23 , 24 ]. However, there have been relatively few reports on analyses of the productivity and seed quality of legumes [ 10 ] or normal [ 11 ] and low-phytate pea cultivars grown under varying foliar P fertilization levels.…”
Section: Introductionmentioning
confidence: 99%
“…In general, studies with P foliar applications show inconclusive results, as summarized in the review by Noack et al [10]. The lack of a positive yield effect has been demonstrated in previous studies of wheat [29,47] and maize [25], whereas other investigations have detected a yield effect as a result of P foliar fertilization [48,49]. Nevertheless, the potential of P foliar application is apparent as revealed by the significant increases in P concentration and content.…”
Section: Discussionmentioning
confidence: 99%