Effect of stripe rust on the yield response of wheat to nitrogen

Devadas, Rakhesh; Simpfendorfer, S.; Backhouse, David; Lamb, David

doi:10.1016/j.cj.2014.05.002

Cited by 56 publications

(43 citation statements)

References 10 publications

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“…Consistent with previous studies (Ash and Brown 1991;Devadas et al 2014), increased rates of N application increased the severity of stripe rust in wheat during grain fill. Analysis of the hyperspectral indices at crop growth stages GS 47 and GS 75 point to the contrasting response of different VIs to changes in stripe rust infection or N deficiency (Figs.…”

Section: Discussionsupporting

confidence: 91%

Sequential application of hyperspectral indices for delineation of stripe rust infection and nitrogen deficiency in wheat

et al. 2015

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Nitrogen (N) fertilization is crucial for the growth and development of wheat crops, and yet increased use of N can also result in increased stripe rust severity. Stripe rust infection and N deficiency both cause changes in foliar physiological activity and reduction in plant pigments that result in chlorosis. Furthermore, stripe rust produce pustules on the leaf surface which similar to chlorotic regions have a yellow color. Quantifying the severity of each factor is critical for adopting appropriate management practices. Eleven widely-used vegetation indices, based on mathematic combinations of narrow-band optical reflectance measurements in the visible/near infrared wavelength range were evaluated for their ability to discriminate and quantify stripe rust severity and N deficiency in a rustsusceptible wheat variety (H45) under varying conditions of nitrogen status. The physiological reflectance index (PhRI) and leaf and canopy chlorophyll index (LCCI) provided the strongest correlation with levels of rust infection and N-deficiency, respectively. When PhRI and LCCI were used in a sequence, both N deficiency and rust infection levels were R. Devadas (&) Climate Change Cluster (C3), correctly classified in 82.5 and 55 % of the plots at Zadoks growth stage 47 and 75, respectively. In misclassified plots, an overestimation of N deficiency was accompanied by an underestimation of the rust infection level or vice versa. In 18 % of the plots, there was a tendency to underestimate the severity of stripe rust infection even though the N-deficiency level was correctly predicted. The contrasting responses of the PhRI and LCCI to stripe rust infection and N deficiency, respectively, and the relative insensitivity of these indices to the other parameter makes their use in combination suitable for quantifying levels of stripe rust infection and N deficiency in wheat crops under field conditions.

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Section: Discussionsupporting

confidence: 91%

Sequential application of hyperspectral indices for delineation of stripe rust infection and nitrogen deficiency in wheat

et al. 2015

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“…However, this was not an advantage due to the high infection resulting in shriveled kernels. Decreased photosynthesis reduced starch biosynthesis and seed size (Hailu 2003;Devadas et al 2014). In contrast to our results, Kumar and Raghavaiah (2004) reported that when leaf and stripe rust covered or killed the flag leaf area, grainfilling period is shortened, which resulted in lowered protein content in kernels.…”

Section: Effect Of Stripe Rust On Grain Protein Contentcontrasting

confidence: 81%

“…Compared to the protected plots, grain protein content of the most susceptible genotypes G3, Nurkent and Karacada g-98 in the infected plots was significantly higher in Diyarbakır and Adıyaman locations (Table 5). Decreased photosynthesis reduced starch biosynthesis and seed size (Hailu 2003;Devadas et al 2014). However, this was not an advantage due to the high infection resulting in shriveled kernels.…”

Section: Effect Of Stripe Rust On Grain Protein Contentmentioning

confidence: 99%

Stripe Rust Partial Resistance Increases Spring Bread Wheat Yield in South‐eastern Anatolia, Turkey

Aktaş

Zencirci

2016

Journal of Phytopathology

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Stripe rust caused by Puccinia striiformis f.sp. tritici is the most serious disease of wheat globally including south‐eastern Anatolia of Turkey, where wheat originated. In this study, 12 spring wheat genotypes were artificially inoculated and preserved in two locations, Diyarbakır and Adıyaman, during the 2011–2012 season to investigate loss in yield and yield components. Genotypes were evaluated at the adult plant stage using two partial resistance parameters: final disease severity and area under the disease progress curve (AUDPC). AUDPC ranged from 14.8 to 860 in Diyarbakır, and 74 to 760 in Adıyaman. Yield loss ranged from 0.6 to 68.5% in Diyarbakır and 9.8 to 56.8% in Adıyaman. Genotypes G1, G5, G7 and G8 were found to lose less yield, while higher yield loss was observed in G3, G4 (Nurkent), G5 and G9 (Karacadağ‐98). The highest loss in thousand kernel weight was observed in a susceptible cultivar Karacadağ‐98 in Diyarbakır followed by 43.4 and 24.4% in Adıyaman. Test weight loss reached 8.89% in Diyarbakır and 20.8% in Adıyaman. Yield loss and AUDPC had a positive significant relationship. Based on the values of AUDPC, final disease severity and yield loss, three major clusters were formed for 12 wheat genotypes. Partially resistant genotypes were found to lose less grain yield and seemed to be stronger against severe stripe rust pressure.

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“…Nitrogen is an essential plant nutrient that affects productivity, crop water use and water use efficiency (WUE) of wheat (Cossani et al, 2010;Devadas et al, 2014;Garnett et al, 2009;Morell et al, 2011). For example, Behera and Panda (2009) reported that the crop evapotranspiration (ET) in the 80 kg N ha −1 treatment was higher by 22 mm from 2002 to 2003, 28.3 mm from 2003 to 2004 and 37.3 mm from 2004 to 2005 than that in the 0 kg N ha −1 treatment under 40% maximum allowable depletion of available soil water.…”

Section: Introductionmentioning

confidence: 99%

Water use and soil nitrate nitrogen changes under supplemental irrigation with nitrogen application rate in wheat field

Wang

Guo

et al. 2015

Field Crops Research

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Effect of stripe rust on the yield response of wheat to nitrogen

Cited by 56 publications

References 10 publications

Sequential application of hyperspectral indices for delineation of stripe rust infection and nitrogen deficiency in wheat

Sequential application of hyperspectral indices for delineation of stripe rust infection and nitrogen deficiency in wheat

Stripe Rust Partial Resistance Increases Spring Bread Wheat Yield in South‐eastern Anatolia, Turkey

Water use and soil nitrate nitrogen changes under supplemental irrigation with nitrogen application rate in wheat field

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