Nitrogen Fertilizer Sources and Application Timing Affects Wheat and Inter-Seeded Red Clover Yields on Claypan Soils

Nelson, Kelly A.; Motavalli, Peter P.; Nathan, Manjula

doi:10.3390/agronomy4040497

Cited by 14 publications

(14 citation statements)

References 30 publications

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“…Para ampliar su eficiencia la aplicación de urea además de considerar el pH, contenido de humedad del suelo y nitrógeno disponible entre otros, debe darse un adecuado manejo agronómico, que incluye el tipo de aplicación, evitando el esparcimiento del fertilizante al 'voleo' (Nelson et al, 2014). El momento óptimo de aplicación y dosis de fertilizante son relevantes, ya que se debe ajustar la cantidad y sincronizar el suministro del elemento con las necesidades de absorción del cultivo.…”

Section: Discussionunclassified

Urea (NBPT) una alternativa en la fertilización nitrogenada de cultivos anuales

Morales

Rubí-Arriaga²,

López-Sandoval³

et al. 2019

Remexca

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Los fertilizantes nitrogenados son necesarios, ya que gracias a ellos se mejora la producción de los cultivos. Después del agua y la temperatura se considera como el tercer factor en importancia en la producción de alimentos de origen vegetal. La urea como fertilizante, presenta la ventaja de proporcionar un alto contenido de nitrógeno (46%), el cual, es esencial en el metabolismo de la planta. La mayor desventaja que tiene es la pérdida de nitrógeno (N) en forma de gas amoniaco (NH3), proveniente de su descomposición al ser aplicada al suelo. La urea de liberación lenta es utilizada para reducir las pérdidas por volatilización después de la fase de hidrólisis y por lixiviación luego de la nitrificación del amonio. Para reducir las pérdidas por volatilización y mantener una disponibilidad adecuada de N en el suelo, diferentes estrategias de manejo agronómico han sido evaluadas. La triamida N-(n-butil) tiofosfórica (NBPT), inhibidor de la ureasa, impide temporalmente la degradación enzimática de la ureasa y minimiza la pérdida por volatilización de NH3, aumentando en consecuencia la absorción de N del fertilizante por el cultivo. El estudio se realizó durante 2018. En el documento elaborado se aborda el papel del N en las plantas cultivadas, algunas implicaciones ecológicas, él uso de la urea y especialmente se hace una recopilación de las características de la urea NBPT y de las investigaciones más relevantes sobre el uso de este fertilizante y su incidencia en el incremento del rendimiento en cultivos anuales.

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Section: Discussionunclassified

Urea (NBPT) una alternativa en la fertilización nitrogenada de cultivos anuales

Morales

Rubí-Arriaga²,

López-Sandoval³

et al. 2019

Remexca

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“…Khalil et al (2011), in a study conducted at Peshawar in Pakistan using three N rates ranging from 80 to 160 kg ha –1 and Sij et al (2011) in a study performed at Vernon, TX, using various N rates between 0 and 136 kg ha –1 , observed that wheat biomass production increased almost linearly with an increase in N rate. Similarly, Nelson et al (2014), in a study conducted at Novelty, MO, involving various N rates ranging from 0 to 112 kg ha –1 , and Li et al (2016), in a study conducted at Guangzhou in China using various N rates between 0 and 300 kg ha –1 , found that wheat biomass production increased with an increase in N rate up to 112 kg ha –1 at Novelty and 150 kg ha –1 at Guangzhou. However, no studies have examined N effects as influenced by planting date, soil type, climate, and weather conditions.…”

mentioning

confidence: 82%

Simulating Winter Wheat Forage Production in the Southern United States Using a Forage Wheat Model

Woli¹,

Rouquette²,

Smith³

et al. 2019

Agronomy Journal

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Core Ideas Winter wheat biomass had one‐phase exponential association with N application rate. A finer, more fertile soil produced more biomass than a coarser, less fertile soil. Biomass significantly decreased with a delay in planting for N rates ≥135 kg ha–1. The effect of the initial drought on biomass was higher with an increase in N rate. The reduction in biomass due to the terminal drought was greatest at 135 kg N ha–1. ABSTRACT Winter wheat (Triticum aestivum L.) is an important component of pastures in the southern United States. This study examined winter wheat biomass responses to N application rate as influenced by soil type, planting date, drought, and El Niño‐Southern Oscillation (ENSO) for the Pineywoods region of Texas using a new forage wheat model that had been incorporated into the Decision Support System for Agrotechnology Transfer suite of crop models. Biomass was simulated for various scenarios comprising two soils, three planting dates, seven N rates, and 74 yr of weather data. The biomass response to N rate was represented by a one‐phase exponential association. Biomass generally peaked at 135 kg N ha−1 on the finer, more fertile Lilbert soil and at 269 kg N ha−1 on the coarser, less fertile Darco soil. Biomass decreased with a delay in planting date at N rates ≥135 kg N ha−1 for Lilbert and ≥202 kg N ha−1 for Darco. The effect of drought during September to October was greater for a higher N rate, the Darco soil, and an earlier planting date. The effect of drought during March to April was greatest at 135 kg N ha−1 and greater on Darco, with up to 45% reduction in biomass compared with 35% on Lilbert. Biomass reduction was up to 45% for the mid‐October planting and 32% for the mid‐September planting. Winter wheat biomass yield was not significantly affected by ENSO. These findings might assist winter wheat forage growers in this region in identifying soil type–, planting date–, and weather‐specific N rates to optimize forage production.

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“…The first paper of this group, by Nelson et al [8], pointed out that enhanced-efficiency N sources (urea-based fertilizers) can increase wheat profitability. In particular, polymer-coated urea (PCU) or N-(n-butyl) thiophosphoric triamide (NBPT) treated urea, can increase fertilizer uptake and enhance NUE by reducing N loss.…”

Section: Nitrogen Efficiency Improvement Strategiesmentioning

confidence: 99%

Towards a Better Understanding of Agronomic Efficiency of Nitrogen: Assessment and Improvement Strategies

Montemurro

Diacono

2016

Agronomy

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Agronomic N-use efficiency is the basis for economic and environmental efficiency, and an effective agro-ecosystem management practice, improving nutrient use efficiency, is a crucial challenge for a more sustainable production of horticultural, industrial and cereal crops. However, discrepancy between theory and practice still exists, coming from large gaps in knowledge on net-N immobilization/mineralization rates in agro-ecosystems, as well as on the effects of indigenous and applied N to crop response. A more thorough understanding of these topics is essential to improve N management in agricultural systems. To this end, the present Special Issue collects research findings dealing with different aspects of agronomic efficiency of N in different agro-ecosystems, and environmental impact derived from fertilization management practices. In particular, the Special Issue contains selected papers, which concern a wide range of topics, including analyzing tools, options of management, calculation equation and modeling approaches.

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Nitrogen Fertilizer Sources and Application Timing Affects Wheat and Inter-Seeded Red Clover Yields on Claypan Soils

Cited by 14 publications

References 30 publications

Urea (NBPT) una alternativa en la fertilización nitrogenada de cultivos anuales

Urea (NBPT) una alternativa en la fertilización nitrogenada de cultivos anuales

Simulating Winter Wheat Forage Production in the Southern United States Using a Forage Wheat Model

Towards a Better Understanding of Agronomic Efficiency of Nitrogen: Assessment and Improvement Strategies

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