Nitrate leaching in a silage maize field under different irrigation and nitrogen fertilizer rates

Gheysari, Mahdi; Mirlatifi, S M; Homaee, Mehdi; Asadi, Mohammad Esmaeil; Hoogenboom, Gerrit

doi:10.1016/j.agwat.2009.01.005

Cited by 217 publications

(102 citation statements)

References 28 publications

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“…Deep percolation is considered to be one of the main factors determining the amount of N leached [46]. Matching irrigation rates with plant uptake ensures efficient water and N uptake while reducing deep percolation losses of water and nutrient [22].…”

Section: Deep Percolation At Different Levels Of N and Water Under Drmentioning

confidence: 99%

Effect of Nitrogen and Irrigation Application on Water Movement and Nitrogen Transport for a Wheat Crop under Drip Irrigation in the North China Plain

Sui

Wang

Gong

et al. 2015

Water

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For improving water scarcity and groundwater pollution from agriculture, two-year experiments (2011)(2012)(2013) with three water levels (0.3, 0.5 and 0.8 evaporation (E) in 20-cm-diameter pans) and four nitrogen (N) levels (120, 140 and 190 kg·ha in 2013) were conducted to study effects of water and N availability on water movement and N transport for a wheat crop under drip irrigation in the North China Plain. The results indicated that under drip irrigation, deep percolation at 1-m depth was stable at 0.5-0.8 E with the same N rate for winter wheat. At 0.5-0.8 E, deep percolation was also relatively stable with increasing N rate from 120 to 140 kg·ha . The irrigation schedule and N rates only affected N leaching below the root zone of winter wheat (60-cm depth), while the N residual in the soil layer presented more risk to the environment than N leaching. In general, the 290-kg-ha −1 N level was not recommended using drip fertigation for winter wheat in the North China Plain. The empirical equation given by the Ministry of Geology and Mineral Resources was also not recommended for estimating the drainage under drip irrigation. OPEN ACCESSWater 2015, 7 6652

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Section: Deep Percolation At Different Levels Of N and Water Under Drmentioning

confidence: 99%

Effect of Nitrogen and Irrigation Application on Water Movement and Nitrogen Transport for a Wheat Crop under Drip Irrigation in the North China Plain

Sui

Wang

Gong

et al. 2015

Water

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“…Apart from some residual roots within a depth of 20 cm, there was no visible heterogeneity in the sandy soil. The natural groundwater table was deeper than 5 m. After photographing dye stained patterns of soil layers, undisturbed soil samples of 100 cm 3 were collected at depths of 0-10, 10-20, 20-50 and 50-100 cm. The samples were used to measure soil properties, including soil texture, bulk density, porosity and saturated soil hydraulic conductivity.…”

Section: Experimental Site and Measurementsmentioning

confidence: 99%

“…Wastewater primarily represents a source of water and nutritive elements, such as nitrogen, phosphorous and potassium, which contribute to the growth of many crops [1]. However, the excessive input of wastewater into the soil may lead to adverse effects on the soil and groundwater by causing nitrogen leaching below the root zone [2][3][4], destroying crops and causing economic losses to farmers [5]. Furthermore, pollutants in wastewater, particularly heavy metals and organic matter, can potentially threaten the environment and human health [6].…”

Section: Introductionmentioning

confidence: 99%

Root Nitrogen Uptake in Wastewater-Irrigated Pepper Fields

Lu¹,

Wang²,

Dou³

2015

JRST

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Given the shortage of fresh water in semi-arid and arid zones, wastewater is becoming an increasingly important source of irrigation. This study analyzes the principles of root water/nitrogen uptake dynamics in wastewater-irrigated pepper fields. Comparison of pepper root uptake rates of nitrogen show that the root uptake rate of NO 3 -N is an order of magnitude higher than that of NH 4 -N. When the original NO 3 -N content in the soil is high, additional wastewater irrigation will not increase the root uptake of NO 3 -N. The pepper root water uptake rates gradually increase with increasing light intensity and air temperature.

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“…Regarding agronomic factors, García-Garizábal et al (2009) verified that an adequate management of irrigation water can reduce significantly the masses of salts and nitrates exported from an agrarian watershed. Gheysari et al (2009) indicate that it is possible to control the levels of nitrate leaching from the root zone with an appropriate joint management of irrigation and fertilization. Also, it has been demonstrated that a decrease in nitrogenous fertilization can considerably decrease nitrate leaching levels without causing a drop in productivity (Moreno et al, 1996;Cui et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Watershed Monitoring for the Assessment of Irrigation Water Use and Irrigation Contamination

García-Garizábal¹,

Abrahão²,

Causapé³

2012

Irrigation - Water Management, Pollution and Alternative Strategies

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Nitrate leaching in a silage maize field under different irrigation and nitrogen fertilizer rates

Cited by 217 publications

References 28 publications

Effect of Nitrogen and Irrigation Application on Water Movement and Nitrogen Transport for a Wheat Crop under Drip Irrigation in the North China Plain

Effect of Nitrogen and Irrigation Application on Water Movement and Nitrogen Transport for a Wheat Crop under Drip Irrigation in the North China Plain

Root Nitrogen Uptake in Wastewater-Irrigated Pepper Fields

Watershed Monitoring for the Assessment of Irrigation Water Use and Irrigation Contamination

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