Yield response to heat stress as affected by nitrogen availability in maize

Ordóñez, Raziel A.; Savin, Roxana; Cossani, C. Mariano; Slafer, Gustavo A.

doi:10.1016/j.fcr.2015.07.010

Cited by 90 publications

(55 citation statements)

References 83 publications

(115 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yield improvement in temperate maize is attributed to greater high temperature stress tolerance, N uptake and associated N efficiency. However, these results were, in contrast to previous reports that observed that sensitivity of yield to heat stress, increased with the level of N availability in wheat (Altenbach et al 2003, Zahedi et al 2004, in barley (Passarella et al 2008) and in maize (Ordóñez et al 2015). On the one hand, these previous studies were conducted under more or less controlled environments which therefore extended the magnitude of HTS (for example, the maximum air temperature in Ordonez's experiment exceeded 40°C, which rarely appeared in field conditions).…”

Section: Resultscontrasting

confidence: 54%

“…Field experiments on wheat showed that the degree of damage under HTS increased with higher nitrogen availability, consequently resulting in a reduction in final yield (Morris et al 2006). However, several investigations demonstrated that sensitivity of crop yield to heat stress was increased with nitrogen fertilization in wheat (Altenbach et al 2003, Zahedi et al 2004, in barley (Passarella et al 2008) and in maize (Ordóñez et al 2015). Maize will be more often subject to HTS in the context of climate changes.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of nitrogen regimes on narrowing the magnitude of maize yield penalty caused by high temperature stress in North China Plain

Peng¹,

Chen²,

Adamou³

et al. 2017

Plant Soil Environ.

View full text Add to dashboard Cite

Further enhancement of maize (Zea mays L.) productivity will benefit from a thorough understanding of thermotolerance. The effects of nitrogen fertilization regimes (ratio of nitrogen (N) doses prior to planting: V7:V15:R3) on reducing yield penalty imposed by high temperature stress are discussed in this study. Field experiments were conducted in 2013 and 2014 using three nitrogen fertilization regimes (N1 – 120:180:0:0; N2 – 60:90:150:0; N3 – 60:90:60:90) and CK (control) treatment (1:0:0:0) to discuss the effect of nitrogen fertilization regimes on alleviating high temperature stress of spring maize. Total N rates for 2013 and 2014 were 280 and 300 kg/ha, respectively. Yield in 2013 and 2014 was averaged as 9.37 and 12.35 t/ha for N3, respectively, which was 13.47% higher than CK. During the grain-filling stage, leaf area index and the SPAD (soil plant analysis development) value in N3 were the highest, but electrical conductivity and malondialdehyde content of ear leaf in N3 were the lowest. Moreover, photosynthetic rate of ear leaf in N3 increased by 9.95% compared to CK. These results indicate that nitrogen fertilization regimes, especially with N3 treatment, can help maintain relatively higher photosynthetic supply capacity during the grain-filling stage under high temperature stress, thereby resulting in improved grain yield.

show abstract

Section: Resultscontrasting

confidence: 54%

mentioning

confidence: 99%

Effect of nitrogen regimes on narrowing the magnitude of maize yield penalty caused by high temperature stress in North China Plain

Peng¹,

Chen²,

Adamou³

et al. 2017

Plant Soil Environ.

View full text Add to dashboard Cite

show abstract

“…There were different N fertilization regimes in all experiments, and two heat stress conditions in Exp. To impose heat stress, we enclosed part of the plots with transparent polyethylene film (100-mm thickness) mounted on wood structures at the beginning of each heating period and removed it at the end (as illustrated in Ordóñez et al, 2015), leaving open the bottom 30 cm of all sides of each structure. There were two N fertilization rates in Exp.…”

Section: Hybrids Nitrogen Fertilization Regimes and Heat Stress Trementioning

confidence: 99%

“…1, 3, 6, and 7 (Table 1). This increased maximum daily air temperature in the enclosed canopies by ?5°C (averaged across different heights of the canopy, see details in Ordóñez et al, 2015) while minimum temperature was unchanged. 1 to 5 and three different rates combined with two application timings in Exp.…”

Section: Hybrids Nitrogen Fertilization Regimes and Heat Stress Trementioning

confidence: 99%

Maize Grain Weight Sensitivity to Source–Sink Manipulations under a Wide Range of Field Conditions

et al. 2018

Self Cite

View full text Add to dashboard Cite

Physiological causes for grain weight determination in maize (Zea mays L.) are not clear. Source–sink relationships during grain filling modulate grain weight, and there are controversies regarding the degree of source limitation that may exist during grain filling. We aimed to analyze likely causes of the responsiveness of maize grain weight to defoliation and degraining treatments imposed 15 d after silking, quantifying the responsiveness of grain weight to these source–sink manipulations in a large number of field conditions (52 background conditions in which source–sink manipulations were imposed). Grain weight was largely unresponsive to increases in source availability but was diminished by defoliations in six out of seven experiments. Interestingly, grain weight reductions due to defoliation were not hierarchical (grains from different positions along the ear responded similarly) and were not worsened by imposing a simultaneous heat stress. Heat affected the grain growth capacity directly, and indirect effects (through reducing source strength due to accelerated senescence) were not evident. The penalty imposed by heat was neither increased by defoliation nor diminished by degraining, and the reduction in grain weight was similar for grains with different potential size. Our study reinforced the concept that maize yield is limited by the sink strength during grain filling, even when grain weight may respond to reductions in the grain filling source–sink ratio.

show abstract

“…Hatfield and Prueger (2015) and Hatfield (2016), using controlled environment studies with temperatures greater than or equal to 3°C above normal temperatures, showed maize yield reductions of over 50% in grain yield along with an increased rate of phenology. Ordóñeza et al (2015) under field conditions observed maize yield reductions from 13 to 88% due to increased temperature (over 6°C above normal temperatures). The impact of the high temperatures occurred during the grain-filling period which was attributed to the impact of high temperatures on pollen survivability and high nighttime temperatures on the efficiency of the grain-filling process.…”

Section: Introductionmentioning

confidence: 99%

Vulnerability of grain crops and croplands in the Midwest to climatic variability and adaptation strategies

2017

View full text Add to dashboard Cite

Maize (Zea mays L.) and soybean (Glycine max (L.) Merr.) are the dominant grain crops across the Midwest and are grown on 75% of the arable land with small but economically important crops of wheat (Triticum aestivum L.) and oats (Avena sativa L.) but economically important crops. Historically, there have been variations in annual yields for maize and soybean related to the seasonal weather patterns. Key concerns are the impacts of future climate change on maize and soybean production and their vulnerability to future climate changes. To evaluate these, we analyzed the yield gaps as the difference between the attainable and actual yield at the county level and observed meteorological data to determine which seasonal meteorological variables were dominant in quantifying the actual/attainable yields. July maximum temperatures, August minimum temperatures, and July-August total precipitation were found to be the significant factors affecting the yield gap. These relationships were used to estimate the change in the yield gap through 2100 using both the RCP 4.5 and 8.5 climate scenarios for these variables for selected counties across the Midwest. Yield gaps increased with time for maize Climatic Change (2018) 146:263-275 DOI 10.1007/s10584-017-1997 Contribution from the USDA-ARS and Midwest Climate Hub. Soybean was not as sensitive as maize because the projected temperatures do not exceed optimum temperature ranges for growth and reductions in production that are more sensitive to precipitation changes during the reproductive stages. Adaptation strategies for maize and soybean will require more innovation than simple agronomic management and require the linkage between geneticists, agronomists, and agricultural meteorologists to develop innovative strategies to preserve production in the Midwest.

show abstract

Yield response to heat stress as affected by nitrogen availability in maize

Cited by 90 publications

References 83 publications

Effect of nitrogen regimes on narrowing the magnitude of maize yield penalty caused by high temperature stress in North China Plain

Effect of nitrogen regimes on narrowing the magnitude of maize yield penalty caused by high temperature stress in North China Plain

Maize Grain Weight Sensitivity to Source–Sink Manipulations under a Wide Range of Field Conditions

Vulnerability of grain crops and croplands in the Midwest to climatic variability and adaptation strategies

Contact Info

Product

Resources

About