The Influence of Water and Nitrogen Availability on the Expression of End-Use Quality Parameters of Spring Wheat

Yang, Rui; Torrion, Jessica A.; Walsh, Olga S.; O’Brien, Katherine L.; Liu, Qian

doi:10.3390/agronomy8110257

Cited by 22 publications

(27 citation statements)

References 42 publications

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“…When data were pooled over N rates, the means comparison using the Orthogonal Polynomial Contrasts (Table 5) revealed that wheat yield was not statistically different between medium and high IR treatments. This agrees with the recent deficit IR studies in Idaho and Montana (Torrion & Stougaard, 2017;Yang et al, 2018).…”

Section: Grain Yield and Yield Componentssupporting

confidence: 93%

Grain yield, quality, and spectral characteristics of wheat grown under varied nitrogen and irrigation

Walsh

Torrion

Liang

et al. 2020

Agrosystems Geosci & Env

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Nitrogen and water are two key factors for wheat production due to their major roles in plant growth and development, photosynthesis, yield, and grain protein content. Plant uptake of water and N is fundamentally interactive. Our objectives were: (a) to analyze the effects of different irrigation (IR) and N rates on spring wheat (Triticum aestivum L.) yield and grain protein, and spectral indices (relative greenness [SPAD] and Normalized Difference Vegetation Index [NDVI]), and (b) to identify the optimum IR and N requirements for wheat grain production in semi‐arid conditions of Montana and Idaho. This article details the results from field experiments conducted at three locations for two growing seasons (6 site‐years). Relative greenness measured by SPAD chlorophyll meter was used to assess plant N status, whereas NDVI was used for both plant N status and estimation of wheat yield. Both SPAD and NDVI values increased as N and IR application rates increased. The SPAD and NDVI values explained 80 and 84% of the variation in wheat yield, respectively. We found that IR at 75% of evapotranspiration (ET) throughout the growing season is adequate to optimize wheat yield and grain protein. Nitrogen rate was not correlated with wheat yield at any of the site‐years. Based on this study's results, approximately 150 kg N ha−1 (total, soil residual N plus N added as fertilizer) may be sufficient to optimize yield and grain protein content of irrigated spring wheat in semi‐arid cropping systems.

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Section: Grain Yield and Yield Componentssupporting

confidence: 93%

Grain yield, quality, and spectral characteristics of wheat grown under varied nitrogen and irrigation

Walsh

Torrion

Liang

et al. 2020

Agrosystems Geosci & Env

Self Cite

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“…The results of our study confirm that even if wheat grain yields are not always increased with N applications, N fertilizer could still be beneficial in terms of improved grain quality (grain test weight and grain protein content). This agrees with findings by Yang et al (2018), reporting that although wheat grain yield did not respond to N fertilization, wheat quality parameters (including flower protein content) were positively influenced by N application in all wheat cultivars assessed in that study.…”

Section: Biomass Productionsupporting

confidence: 93%

Nitrogen Fertilizer and Residue Management in Dryland No‐Till Hard Red Spring Wheat

Walsh

2019

Agrosystems Geosci & Env

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Nitrogen may enhance wheat grain quality even when wheat yield is not increased. Nitrogen rate and placement had greater effect on grain protein than wheat yield. Side‐banding N resulted in higher grain protein than broadcasting. Residue management had no effect on wheat production. This article summarizes the results from a 1‐yr field experiment conducted at two locations in northcentral Montana. Nutrient and residue management are important aspects of dryland no‐till cropping systems that directly affect wheat (Triticum aestivum L.) production. The objectives were to assess N response of hard red spring wheat grown in dryland no‐till conditions under varied crop residue management. The effects of N application rate (0, 135, and 270 kg N ha−1) and placement (broadcast vs. side‐banded) and residue management (undisturbed vs. removed) on biomass weight and N content, Normalized Difference Vegetative Index (NDVI), grain yield, grain test weight, and protein content of hard red spring wheat were evaluated. At one of two locations, the 135 kg N ha−1 rate resulted in significantly higher yield, compared with unfertilized check, but further increase of N rate to 270 kg N ha−1 did not improve yield. There was no response of grain yield to N application rate at the second location. At one of two locations, the side‐dress N application resulted in higher wheat yield, but no statistically significant differences in yield associated with N placement was observed at the second location. Biomass N content and grain protein content were significantly affected by the N application rate at both locations. The results of this study confirm that even if wheat grain yields are not always increased with N applications, N fertilizer could still be beneficial in terms of improved grain quality (test weight and protein content).

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“…Our results in grain yield and protein in response to N supplies were consistent with the findings of Yang et al [34] and Klikocka et al [35]. Webster and Jackson [30] found that N top-dressing at anthesis increased grain protein content by 1.6 to 7.4% depending on N rate and soil residual N before anthesis.…”

Section: Yield and Protein Contentsupporting

confidence: 92%

Application of Plant Growth Regulators on Soft White Winter Wheat under Different Nitrogen Fertilizer Scenarios in Irrigated Fields

Qin

Noulas²,

Wysocki

et al. 2020

Agriculture

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Lodging in cereal crops can result in yield loss and harvesting difficulties for growers. Application of plant growth regulator (PGR) has been an indispensable management practice to reduce lodging problems that are often exacerbated during high wind growing conditions and/or high nitrogen (N)/water environments, but the data is limited in the Columbia Basin of Oregon. The objective of this research was to evaluate the effect of two PGR products (chlormequat chloride-CC, trinexapac-ethyl-TE) at different rates and application timings on two soft white winter wheat varieties (ORCH-102 and SY Ovation). Crop growth (stem height and thickness), yield-related (spike density as ears m−2, seeds per spike, grain weight) and quality parameters (test weight, protein) were measured for two cropping seasons from October 2017 to July 2019 following the application of the two PGR products at tillering (GS21-26), stem elongation (GS30-32), and/or flag leaf (GS37-39) stages under a high-N fertilizer scenario. In both growing seasons, no lodging problems were recorded for any treatments. The plant height was reduced after PGR application, but the impact on stem thickness was limited. PGR application slightly affected wheat yield, yield components, testing weight, and protein level in both growing seasons. Our results suggested that the effect of PGR application is relatively limited if no lodging problem occurred.

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The Influence of Water and Nitrogen Availability on the Expression of End-Use Quality Parameters of Spring Wheat

Cited by 22 publications

References 42 publications

Grain yield, quality, and spectral characteristics of wheat grown under varied nitrogen and irrigation

Grain yield, quality, and spectral characteristics of wheat grown under varied nitrogen and irrigation

Nitrogen Fertilizer and Residue Management in Dryland No‐Till Hard Red Spring Wheat

Application of Plant Growth Regulators on Soft White Winter Wheat under Different Nitrogen Fertilizer Scenarios in Irrigated Fields

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