Timing of Nitrogen Fertilization in Wheat under Conventional and No‐Tillage System

Melaj, Mariana A.; Echeverría, Hernán Eduardo; López, Silvia; Studdert, Guillermo Alberto; Andrade, Fernando H.; Bárbaro, Néstor

doi:10.2134/agronj2003.1525

Cited by 56 publications

(39 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This excess water might have decreased the difference in grain yield between fertilization times. The lack of difference between fertilization times observed at Tandil grain yield for fertilization at tillering compared with fertilization at sowing was also reported by Videla et al (1996Videla et al ( , 2004 and Melaj et al (2003) at Balcarce and by Lo´pez-Bellido et al (2005) for Mediterranean conditions, in which 50-60% of total annual rainfall was recorded during fall and winter.…”

Section: Grain Yieldsupporting

confidence: 76%

“…Average RE across site-years was 32 and 41% of applied N for fertilization at sowing and tillering, respectively. Melaj et al (2003) and Lo´pez-Bellido et al (2005), working with 15 N under rainfed conditions, reported RE values that ranged from 12 to 24% and from 16 to 52% for fertilization at sowing and tillering, respectively.…”

Section: Grain Yieldmentioning

confidence: 99%

“…Similary, Garcı´a et al (1998) did not determine differences between N fertilization at sowing or split applications (50% at showing and 50% tillering). On the contrary, some studies have showed that, in this area, N fertilization at tillering increased grain yield and NUE compared with fertilization at sowing (Melaj et al 2003;Videla et al 2004). However, the results of this practice depend on environmental conditions after fertilization and, therefore, it is necessary to evaluate wheat N response to timing N fertilization in a wider range of environmental conditions and years (Fagaria and Baligar 2005).…”

mentioning

confidence: 92%

See 2 more Smart Citations

Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina

Barbieri¹,

Rozas²,

Echeverría³

2008

Can. J. Plant Sci.

View full text Add to dashboard Cite

. 2008. Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina. Can. J. Plant Sci. 88: 849Á857. Nitrogen (N) fertilization is an important management practice to increased grain yield; however, it is imperative to increase nitrogen use efficiency (NUE) in order to diminish risks of environmental pollution. The objective of this study was to determine the effect of fertilization times on wheat grain yield, grain N accumulation and grain N recovery efficiency (RE) in different sites and years at the south-eastern wheat belt of the Pampas. The experiments were a factorial combination of N rates and fertilization times (sowing and tillering). Grain yield ranged from 1600 to 7900 kg ha(1 and fertilization at tillering increased grain yield compared with fertilization at sowing (5465 vs. 5110 kg ha(1 ), similar behavior was observed for grain N accumulation (95 vs. 86 kg ha(1 ) and RE (0.41 vs. 0.32). Predicted grain yield by CERES-Wheat model for different N rates and fertilization times was correlated with observed grain yield (r 2 00.71). While fertilization at tillering significantly increased grain yield, CERES-Wheat model estimated nitrate leaching losses that ranged from 12 to 62 kg N ha(1 and from 7 to 16 kg N ha(1 for fertilization at sowing and tillering, respectively. However, denitrification losses ranged from 1.2 to 3.9 and from 0.5 to 2.4 kg N ha (1 for fertilization at sowing and tillering, respectively. Leaching losses for fertilization at sowing are a consequence of water excess early in the growing season and would be the main N loss factor. Therefore, N application at tillering is an appropriate strategy to improve NUE in the south-eastern wheat belt of the Pampas.

show abstract

Section: Grain Yieldsupporting

confidence: 76%

Section: Grain Yieldmentioning

confidence: 99%

mentioning

confidence: 92%

See 1 more Smart Citation

Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina

Barbieri¹,

Rozas²,

Echeverría³

2008

Can. J. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…In contrast, Kelley (2001) found no effect of N on kernel numbers per spike. Kernel weight has been reported to decrease with increased N rates (Batey and Reynish, 1976;Melaj et al, 2003). As expected, most of yield gains from a fungicide application after flag leaf emergence have been associated with increased kernel weight (Ruske et al, 2003b;Olesen et al, 2000;Kelley, 2001), but the current study indicates that fungicides have the greatest impact on kernel weight when N rates are increased.…”

Section: Nitrogen Rate × Fungicide Interaction Effect On Winter Wheatsupporting

confidence: 58%

“…Lower kernel weight with increased N has been reported in several studies (Batey and Reynish, 1976;Melaj et al, 2003), while others report responses to vary depending on the year (e.g., Olesen et al, 2000). It was shown in this study that head density and kernel number tended to increase with N rate; limited resources within the plant were likely divided among more kernels, which resulted in lower kernel weights as N rates were increased (Campbell et al, 1977).…”

Section: Nitrogen Rate × Fungicide Interaction Effect On Winter Wheatsupporting

confidence: 58%

Synergism of Nitrogen Rate and Foliar Fungicides in Soft Red Winter Wheat

et al. 2014

View full text Add to dashboard Cite

Projected global demand for small grain cereals emphasizes the need for sustainable intensi cation with higher crop yields. Field studies on so red winter wheat (Triticum aestivum L.) examined interactions among three fertilizer N rates, eight fungicide application strategies, and various cultivars grown in nine eld environments in Ontario, Canada. A synergistic response occurred when a high rate of N was applied with a fungicide strategy that controlled disease. Overall, compared to a typical N rate of 100 kg ha -1 and no fungicide, yields increased by an average of 1.45 Mg ha -1 when N was applied at 170 kg ha -1 with the most intensive fungicide treatment pooled across sites. is yield response varied from 0.80 to 2.11 Mg ha -1 depending on eld site and pooled across cultivars. Fungicide strategies that included a T2 ( ag leaf timing) or T3 (anthesis timing) produced the highest yields across environments, especially at the high N rate and in most cultivars. e crop response to fungicide depended on the susceptibility of the cultivar to foliar disease and whether the eld environment was favorable for disease development. High N rates increased spike numbers and kernels spike -1 , whereas fungicides mainly increased kernel weight and kernels spike -1 . Prior to an economic analysis, results from this study indicates clear potential for increasing wheat performance by intensifying management with increasing N and deploying fungicide application strategies, especially in some cultivars and in high yielding environments that may be favorable for disease development.

show abstract

Improving winter wheat grain yield and nitrogen use efficiency using nitrogen application time and rate

Aula

Omara

Oyebiyi

et al. 2021

Agrosystems Geosci & Env

View full text Add to dashboard Cite

Preplant nitrogen (N) application, which involves placing nutrients in the soil before seeding, has been an integral part of crop production systems for decades. Some producers are known to apply N at least 21 d before planting. This may increase N loss and lower grain yield. This study evaluated the effect of timing and rate of N application on winter wheat (Triticum aestivum L.) grain yield and N use efficiency (NUE). An experiment with a factorial arrangement of treatments was set up in a randomized complete block design with three replications. Treatments included four N rates (0, 45, 90, and 135 kg ha–1) with each applied 7 or 30 d before planting, and at Feekes 5 (FK5). Grain N was analyzed using LECO CN dry combustion analyzer. The difference method [Grain N from (fertilized plot – check plot)]/N applied was used to compute NUE. Nitrogen application rate significantly affected grain yield (P ≤ .01). Although the rate may be temporally and spatially variable, approximately 90 kg N ha–1 was required to obtain yields that differ markedly from the check. Mid‐season applied N (FK5) had similar yields to preplant applied N in two of four site‐years and significantly increased yield at one site in 2020. Out of two sites, the timing of N application had a substantial effect on NUE in both years (P ≤ 0.11). In this case, NUE was increased by as much as 9.5% for midseason applied N compared to 30 d before planting N application time.

show abstract

Timing of Nitrogen Fertilization in Wheat under Conventional and No‐Tillage System

Abstract: tion rates and greater immobilization generated by surface residues (Rice and Smith, 1984).

Cited by 56 publications

References 21 publications

Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina

Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina

Synergism of Nitrogen Rate and Foliar Fungicides in Soft Red Winter Wheat

Improving winter wheat grain yield and nitrogen use efficiency using nitrogen application time and rate

Contact Info

Product

Resources

About