Nitrogen use by winter wheat and changes in soil nitrate nitrogen levels with supplemental irrigation based on measurement of moisture content in various soil layers

Guo, Zengjiang; Zhang, Yongli; Zhao, Jinsong; Yu, Shen; Zhang, Yu

doi:10.1016/j.fcr.2014.05.016

Cited by 54 publications

(40 citation statements)

References 36 publications

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“…It was observed a direct effect (DE) with sign and magnitude similar to the correlation coefficient (r) of the NRE over the NUE under low (DE = 0.94, r = 0.617) and high (DE = 0.65, r = 0.721) N supply, corroborating the studies of Barraclough et al (2014), Guo et al (2014) and Le Gouis et al (2000). Although NUtE has been associated with the NUE (r = 0.487 and r = 0.516), this was mainly due to indirect effects (IE) of NRE (IE = 0.587) under low N supply.…”

Section: Resultssupporting

confidence: 84%

“…Rahman et al (2011) indicated values between 28.8 and 40.0 kg grains per kgN applied that depended on the genotype and N levels effect, which ranged from 80 to 120 kg N•ha -1 . The variability of modern cultivars response to NUE has been attributed to NUpE (Sadras and Lemaire 2014), NUtE (Barraclough et al 2010), and NRE (Kichey et al 2007;Pask et al 2012;Guo et al 2014). The accumulation of phytomass (Giambalvo et al 2010) and leaf chlorophyll content (Wani et al 2011;Silva et al 2014) are traits that have been linked to NUE and can, therefore, be applied for indirect selection of cultivars that use this nutrient more efficiently.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen use efficiency in modern wheat cultivars

et al. 2016

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Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Nitrogen use efficiency in modern wheat cultivars

et al. 2016

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“…In addition, the accumulation of nitrate-nitrogen in the 0-200-cm soil layers in much of China's farmland is the result of a long period of uninhibited use of N fertilizers [45], and thus irrigation easily increased the risk of N leaching [46]. Applying N after anthesis produces a greater effect on yield in the Northwest China ( Figure 9C, Table 1), while a study indicated that late nitrogen uptake is less associated with yield improvements [47], and no N application after anthesis significantly increased wheat yield as compared with N application after anthesis (Table 1). It is considered that grain nitrogen (and therefore protein) yield is more source-limited than dry matter yield during grain growth [48].…”

Section: N Management Practicesmentioning

confidence: 99%

Synthesis of Climate, Soil Factors, and Nitrogen Management Practices Affecting the Responses of Wheat Productivity and Nitrogen Use Efficiency to Nitrogen Fertilizer in China

et al. 2018

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The reported effects of nitrogen (N) fertilizer on wheat yield and nitrogen use efficiency (NUE) vary greatly, due to differences in climate, soil factors, and N management practices in different regions of China. We collected literature published during 1950-2017 that reported the yield and NUE for wheat in China, under N application and control treatments, and analyzed the data therein. A significant increase in yield was observed with N application, and varied with climate, soil factors, and N management practices in different regions. A larger increase in yield was observed under an average annual temperature of 13-15 • C, an average annual precipitation of >800 mm, respectively. Greater yield-increasing effects were observed in soil with a coarse soil texture, lower soil total N, available N, and a soil pH of ≤7 and >8, respectively. In Northwest China, the yield increase was greater under multiple coated urea applications after anthesis, while the higher NUE was observed under single coated urea application before anthesis. In North China, the yield and NUE were greater under multiple coated urea applications before anthesis. In South China, the yield and NUE were greater under multiple N applications. Consequently, to improve wheat yield and NUE, site-specific N management practices should be adopted.

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“…At 10 DAA, the treatments with moisture of 100% FC showed higher NH 4 + concentrations, probably because the lower availability of oxygen in this treatment limits the oxidation of NH 4 -N to NO 3 -N (Guo et al, 2014;Chen et al, 2015).…”

Section: Experiments 2 Transformation Of the Soil Mineral-n From Diffmentioning

confidence: 99%

Urea coated with poultry litter as an option in the control of nitrogen losses

Dall’Orsoletta

Rauber

Schmitt

et al. 2017

Rev. bras. eng. agríc. ambient.

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The volatilization of ammonia (NH3) and nitrate leaching (NH3-) are the main processes of nitrogen (N) loss in the soil. The objective of the study was to evaluate N losses by NH3 volatilization and mineral N transformations in the soil with urea coated with poultry litter (urea + litter) compared with other sources of N, under two moisture conditions. The experiment was conducted in a controlled environment with a 5 x 2 factorial arrangement with four replicates, five N sources (urea, SuperN®, Kimcoat®, urea + litter and control without fertilizer) and two moisture contents [80 and 100% of field capacity (FC)]. The total volatilized NH3 did not differ between the sources, regardless of the soil moisture condition, ranging from 10.8 to 13.2% of the total N applied. The transformation of NH4+ into NH3- did not vary between the sources, except for the control, but it differed between soil moisture contents, with equilibrium estimated at 31 and 38 days, in the treatments with 80 and 100% FC, respectively. The urea + litter has N losses by NH3 volatilization and speed of transformation of the soil mineral N similar to those of the other sources, and can be used to substitute them.

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Nitrogen use by winter wheat and changes in soil nitrate nitrogen levels with supplemental irrigation based on measurement of moisture content in various soil layers

Cited by 54 publications

References 36 publications

Nitrogen use efficiency in modern wheat cultivars

Nitrogen use efficiency in modern wheat cultivars

Synthesis of Climate, Soil Factors, and Nitrogen Management Practices Affecting the Responses of Wheat Productivity and Nitrogen Use Efficiency to Nitrogen Fertilizer in China

Urea coated with poultry litter as an option in the control of nitrogen losses

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