Relation of nitrate N accumulation in dryland soil with wheat response to N fertilizer

Miao, Yanfang; Wang, Z. H.; Li, S. X.

doi:10.1016/j.fcr.2014.09.016

Cited by 57 publications

(26 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nitrate-N concentrations above the Environmental Protection Agency's (EPA's) primary drinking water standard of 10 mg L -1 have been linked to adverse health effects such as methemoglobinemia (Knobeloch et al 2000;Fewtrell 2004) and cancer (De Roos et al 2003;Ward et al 2005). Beyond health concerns, nitrate leaching can result in economic losses for agricultural producers (Janzen et al 2003;Miao et al 2014), making greater N use efficiency (NUE)-conceived here as the ratio of crop N uptake to plant available N-a promising shared goal for sound environmental stewardship and economic sustainability. In the 720,000-ha semiarid Judith River Watershed (JRW) of central Montana, a large agricultural production region in the northern Great Plains (NGP), nitrate-N concentrations in shallow wells are commonly above the EPA drinking water standard.…”

Section: Introductionmentioning

confidence: 99%

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

John

Jones

Ewing

et al. 2017

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Nitrate (NO 3 -) leaching into groundwater is a growing global concern for health, environmental, and economic reasons, yet little is known about the effects of agricultural management practices on the magnitude of leaching, especially in dryland semiarid regions. Groundwater nitrate-nitrogen (nitrate-N) concentrations above the drinking water standard of 10 mg L -1 are common in the Judith River Watershed (JRW) of semiarid central Montana. A 2-year study conducted on commercial farms in the JRW compared nitrate leaching rates across three alternative management practices (AMP: pea, controlled release urea, split application of N) and three grower standard practices (GSP: summer fallow, conventional urea, single application of urea). Crop biomass and soil were collected at ten sampling locations on each side of a management interface separating each AMP from its corresponding GSP. A nitrogen (N) mass balance approach was used to estimate the amount of nitrate leached annually. In 2013, less nitrate leached the year after the pea AMP (18 ± 2.5 kg N ha -1 ) than the year after the fallow GSP (54 ± 3.6 kg N ha -1 ), whereas the two AMP fertilizer treatments had no effect on nitrate leaching compared to GSPs. In 2014, leaching rates did not differ between each AMP and its corresponding GSP. The results suggest that replacing fallow with pea has the greatest potential to reduce nitrate leaching. Future leaching research should likely focus on practices that decrease deep percolation, such as fallow replacement with annual or perennial crops, more than on N fertilizer practices.

show abstract

Section: Introductionmentioning

confidence: 99%

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

John

Jones

Ewing

et al. 2017

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

show abstract

“…But Miao et al [23] reported that by increasing cumulative nitrate N amounts, the seed yields and percentages increased by N addition rapidly declined, and when the cumulative nitrate amount was over 250 N kg/ha, there was no significant yield increase. In this trial, reducing fertilization treatment (RF) could work in harmony with the demand of crop as well as decrease nitrate accumulation risks.…”

Section: Discussionmentioning

confidence: 99%

Effect of different fertilization managements on nitrate accumulation in a Mollisol of Northeast China

Zhang

et al. 2016

Chem. Biol. Technol. Agric.

View full text Add to dashboard Cite

Background:In a continuous spring maize system in Northeast China, the accumulation and succession characteristics of nitrate in Mollisol with four fertilization treatments, including no fertilization (CK), farmers' conventional fertilization (FC), recommendation fertilization (RF), and controlled release fertilizer application (CRF), were compared over a 6-year field plot trial.Results: On average, the RF and CRF treatments decreased nitrate nitrogen by 16.6 and 39.5 % in the 0-90 cm soil layer, respectively, and maintained a relatively high maize grain yield, as compared to the FC treatment. The accumulation of nitrate nitrogen was more obvious in the CRF treatment compared with the other fertilizer treatments under the arid climate. However, the high precipitation resulted in the leaching of nitrate nitrogen into the deeper soil layer in all the fertilizer treatments. The maximum of nitrate nitrogen in the 0-90 cm soil layer was 81.4 kg N/ha at a nitrogen fertilizer rate of 250 kg N/ha in the long-term trial, which was within the rational and safe level for groundwater. Conclusions:The best fertilization strategy to decrease nitrate accumulation in soil should consider both soil characteristics and precipitation.

show abstract

“…The field experiment was conducted at a site within the winter wheat‐growing region of the Loess Plateau in Yongshou County, in the Weibei highlands of Shaanxi Province, China (35.7° N, 108.2° E, 995 m above sea level). The climate here is subhumid (average annual precipitation 500 mm, average annual temperature 10.8 °C, potential evaporation 807.4 mm) (Miao, Wang, & Li, 2015). In this area, the groundwater table is too deep to be accessed by crops, and no water is available for irrigation, so dryland farming is practiced.…”

Section: Methodsmentioning

confidence: 99%

Winter wheat nitrogen utilization under different mulching practices on the Loess Plateau

et al. 2020

View full text Add to dashboard Cite

Winter wheat (Triticum aestivum L.) is one of the most important cereal crops in the world, and mulching is mostly practiced in the semi-arid region of Northwest China. We examined the effect of different mulching practices on soil N, plant N uptake, N use efficiency and yield of wheat with similar fertilizer rate. The experiment was conducted for 5 yr with four replicates. The five practices included: Control (CK), nitrogen fertilizer and no mulching (NM), nitrogen fertilizer plus plastic film mulching (PM), nitrogen fertilizer plus ridge mulching and furrow seeding (RM+FS), and nitrogen fertilizer plus straw mulching (SM). We found that yield and biomass of winter wheat were significantly affected by different mulching practices during the five growing seasons. Compared to the NM treatment, the PM, SM, and RM+FS treatments increased grain yield by 13, 9, and 4%, respectively, and biomass by 19, 13, and 10%, respectively. Compared to the NM, the RM+FS and PM treatments tended to decrease average grain, straw, and chaff N concentration, while straw mulching tended to increase average grain, straw, and chaff N concentration. Compared to the NM treatment, all mulching treatments consistently increased NUE, and straw mulching had the most significant effect. Nitrate-N in the NM was most likely to leach into deep layers, followed by the SM and the lowest nitrate-N leaching risk was in the two plastic film mulching treatments. The PM could increase winter wheat yield and decrease the risk of nitrate-N leaching. Thus, PM performed better among the mulching practices.

show abstract

Relation of nitrate N accumulation in dryland soil with wheat response to N fertilizer

Cited by 57 publications

References 30 publications

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

Effect of different fertilization managements on nitrate accumulation in a Mollisol of Northeast China

Winter wheat nitrogen utilization under different mulching practices on the Loess Plateau

Contact Info

Product

Resources

About