Response of Nitrogen Losses to Excessive Nitrogen Fertilizer Application in Intensive Greenhouse Vegetable Production

Zhao, Hui; Li, Xuyong; Jiang, Yan

doi:10.3390/su11061513

Cited by 53 publications

(32 citation statements)

References 46 publications

(60 reference statements)

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“…Moreover, the N rate for split application in summer maize was 310 kg hm −2 in the vertisol soil of Anhui province, whereas the NUE in maize was only 23% [6]. Excessive N application resulted in a large amount of N losses in forms such as surface runoff, ammonia volatilization, nitrate leaching, and denitrification, thus causing serious ecological and environmental problems [1,28,31,32]. Therefore, on the basis of ensuring high yield, reducing N rate and minimizing N loss is one of the important research directions in agricultural sustainability.…”

Section: Optimal Nitrogen Rate Of Rzf For Summer Maizementioning

confidence: 99%

Optimal Nitrogen Application Rates of One-Time Root Zone Fertilization and the Effect of Reducing Nitrogen Application on Summer Maize

et al. 2019

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Improvement in fertilization methods, including the optimal matching of nutrient supply and root nutrient absorption by applying nitrogen (N) in the root zone of crop, is necessary to improve N use efficiency (NUE), maintain high stable yield cultivation of maize, and contribute toward future environmental protection. The current practice of split surface broadcasting (SSB) of N is labor-intensive and the surface broadcasting causes a large amount of N to leach into the environment, yet it does not substantially increase maize yield. Root zone fertilization (RZF) has been identified as an efficient way to solve such problems. However, information on the appropriate amount of N fertilizer under RZF for summer maize remains limited. Therefore, in this study, a two-year consecutive field experiment was conducted during 2015–2016 in Anhui province, China, to investigate the effect of N rate and application method on grain yield, nutrient uptake, and NUE of summer maize. The method chosen is not only important to increase grain yield but also critical for reducing N rate and potential loss in the maize cropping system. The experiment comprised six N rates (90, 135, 180, 225, 270, and 360 kg N hm−2) and two N application methods in both 2015 and 2016. The two N application methods included SSB and one-time RZF. Results showed that grain yield of summer maize increased first and then decreased with the increase of N rate; however, when the N rate increased to 270 kg hm−2, the grain yield increased slowly or even decreased. Compared with SSB, RZF increased grain yield by 4%, and the effect of N on grain yield was mainly related to the number of kernels per ear and 1000-seed weight. One-time RZF increased N apparent recovery efficiency by 18% (7.2 percentage points) compared with SSB and also improved the N agronomic efficiency, N physiological efficiency, and N partial factor productivity. In the comprehensive consideration of yield target, NUE, and soil N balance, the optimal N rate for summer maize in the vertisol soil of Anhui province was 180–225 kg hm−2 for one-time RZF, which reduced N fertilizer by 14% compared with the SSB. Overall, one-time RZF has great potential for green and sustainable agriculture, and thus fertilization machines are worthy of development and application in maize cropping systems.

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Section: Optimal Nitrogen Rate Of Rzf For Summer Maizementioning

confidence: 99%

Optimal Nitrogen Application Rates of One-Time Root Zone Fertilization and the Effect of Reducing Nitrogen Application on Summer Maize

et al. 2019

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“…In fertilizer applications not suitable for the technique, the nitrogen is leaching from the soil or away from the gaseous state and the nutrients such as phosphorus and potassium are transformed into non-volatile forms. As a matter of fact, while 50% of the nitrogen applied to the soil is lost in various ways, 90% of the phosphorus cannot be taken by plants [10,11]. Studies have shown that fertilizer nitrogen use efficiency is very low for wheat, paddy and corn, and nitrogen utilization rate is between 29 and 42% [12].…”

Section: Managing Soil Nutrientsmentioning

confidence: 99%

Soil Management in Sustainable Agriculture

Tuğrul¹

2020

Sustainable Crop Production

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People need food to live, and this is largely due to natural resources. However, time is also required to meet these limited resources and increased consumption demands, and for a renewal cycle. This cycle can be traditional, industrial and commercial, as well as be sustainable. So, what is sustainable agriculture? Sustainable agriculture is the way to increase productivity in agriculture and to increase the level of economic prosperity by protecting all living things on earth, living spaces and natural resources. It is clear that the continuity of all the living things is possible with the food provided by natural resources. At this point, sustainable production, consumption and preservation of the natural balance are of great importance. Today, the world population is rapidly increasing and resources are consumed at the same rate; creating awareness about sustainable food, transferring this consciousness to future generations in a more permanent way, increasing the number of conscious producers and consumers, strengthening awareness for sustainable foods, respecting the natural balance, and gaining a sense of responsibility, saving consumption habits should be our main target.

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“…Es importante destacar que un exceso de N en el sistema de producción contribuye a la contaminación del ambiente, especialmente en los trópicos, donde la eficiencia del nitrógeno de los fertilizantes es baja; aproximadamente un tercio del fertilizante nitrogenado aplicado se pierde en la atmósfera o se filtra hacia aguas subterráneas en forma de amoniaco, óxido nitroso y nitratos; por tanto, se ha sugerido el uso de varias estrategias para mejorar la eficiencia de la fertilización nitrogenada y reducir las pérdidas de N en el ambiente (Prasad, 2013;Sharma and Bali, 2017;Yadav et al, 2017;Zhao et al 2019).…”

Section: Introductionunclassified

EFICIENCIA AGRONÓMICA DE NITRÓGENO Y PRODUCCIÓN DE Cynodon plectostachyus (K. Schum.) Pilg. EN FUNCIÓN DE DOS FRECUENCIAS DE CORTE

Arteaga

García

Cedeño-García

et al. 2019

Chil. j. agric. anim. sci.

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† Fallecido durante proceso de investigación RESUMEN La fertilización nitrogenada y la frecuencia de corte son imprescindibles para mejorar la producción y calidad nutritiva del forraje. El objetivo de la investigación fue evaluar la eficiencia agronómica de N y rendimiento del pasto estrella Cynodon plectostachyus en función de dos frecuencias de corte bajo condiciones de trópico bajo. Los tratamientos consistieron en cinco niveles de N (0, 50, 100, 150 y 200 kg ha-1) y dos frecuencias de corte (30 y 45 días). Las variables evaluadas fueron rendimiento de materia seca (MS) y eficiencia agronómica del N (EAN) aplicado. El rendimiento de MS y la EAN fueron influenciadas significativamente (p < 0,01) por los niveles de N, frecuencias de corte y la respectiva interacción, excepto para EAN donde la interacción no fue significativa (p > 0,05). El rendimiento de MS y EAN mostraron un comportamiento lineal con el incremento de N, independientemente de las frecuencias de corte. Independientemente de los niveles de N, el rendimiento de MS y EAN se incrementaron con la frecuencia de corte más amplia. La MS se incrementó en 8,39; 14,40; 20,14 y 26,24 % con 50, 100, 150 y 200 kg N ha-1 , respectivamente, con respecto a la parcela con omisión de N. La EAN en promedio fue de 2,72; 3,35; 3,59 y 4,18 kg de MS kg-1 de N aplicado con 50, 100, 150 y 200 kg N ha-1 , respectivamente, aunque los niveles de 150 y 200 fueron estadísticamente iguales. La dosis de 150 kg de N ha-1 sería suficiente para la fertilización del pasto.

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Response of Nitrogen Losses to Excessive Nitrogen Fertilizer Application in Intensive Greenhouse Vegetable Production

Cited by 53 publications

References 46 publications

Optimal Nitrogen Application Rates of One-Time Root Zone Fertilization and the Effect of Reducing Nitrogen Application on Summer Maize

Optimal Nitrogen Application Rates of One-Time Root Zone Fertilization and the Effect of Reducing Nitrogen Application on Summer Maize

Soil Management in Sustainable Agriculture

EFICIENCIA AGRONÓMICA DE NITRÓGENO Y PRODUCCIÓN DE Cynodon plectostachyus (K. Schum.) Pilg. EN FUNCIÓN DE DOS FRECUENCIAS DE CORTE

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