Interactive effects of nitrogen fertilization and irrigation on grain yield, canopy temperature, and nitrogen use efficiency in overhead sprinkler-irrigated durum wheat

Mon, Jarai; Bronson, K. F.; Hunsaker, Douglas J.; Thorp, Kelly R.; White, Jeffrey W.; French, Andrew N.

doi:10.1016/j.fcr.2016.02.011

Cited by 117 publications

(80 citation statements)

References 38 publications

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“…Cependant, cette interaction est significative sur la paille à la récolte. Selon Mon et al (2016), la fertilisation azotée affecte significativement la biomasse aérienne à partir d'un seuil d'humidité. Ce qui pourrait expliquer les effets observés de cette interaction aux différentes dates de prélèvement.…”

Section: Discussionunclassified

Optimisation du NPK et urée basée sur les informations climatiques pour accroitre la production du sorgho en zones soudano-sahéliennes du Sénégal

Ganyo¹,

Muller²,

Gaglo³

et al. 2019

J. App. Bioscience.

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Ganyo et al., J. Appl. Biosci. 2018 Optimisation du NPK et urée basée sur les informations climatiques pour accroitre la production du sorgho en zones soudano-sahéliennes du Sénégal ABSTRACT Optimizing NPK and urea based on weather forecast to increase sorghum production in Sudano-Sahelian zones in Senegal Objective: Rainfall variability and soil nutrients deficiency accentuated by climate change affects sorghum production in Senegal. This work aims to study the responses of sorghum (Sorghum bicolor L. Moench) to contrasting application of NPK and urea that could be based on weather forecasts. Methodology and results: A split-plot experiment with four replications was carried out at "Nioro du Rip" and "Sinthiou Malème" (Senegal) on sandy soils in rainfed conditions. Four sorghum varieties (Fadda, Faourou, Soumalemba et Soumba) were submitted to five fertilizer treatments defined as T1 = no fertilizer; T2 = 150 kg/ha of NPK (15-15-15) at emergence + 50 kg/ha of urea (46%) at tillering + 50 Kg/ha of urea at stem extension (recommended practice in Senegal for sorghum); T3 = half rate of T2 applied at the same stages; T4 = 150 kg/ha of NPK + 50 kg/ha of urea at stem extension + 50 kg/ha of urea at heading (delay T2) and T5 = half rate of T4 applied at the same stages. Late fertilization allowed plants stressed to recover growth as if fertilizer is applied early in-season. Yield varied according to locations. The application of full dose late inseason (T4) was more beneficial to late application of half rate (T5). Varieties responded differently to fertilization with Soumalemba wich responded better to late application. Conclusion and application of results: It appears from this study that late fertilization has been beneficial for both grain and biomass. It remains an alternative to fertilization management as recommended or practiced by farmers in the event of an unfavorable rain season, especially in agro-pastoral countries like Senegal. Technical support structures for farmers should integrate rainfall forecasts or observations into fertilization recommendations in order to optimize fertilizer efficiency and sorghum productivity.

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Section: Discussionunclassified

Optimisation du NPK et urée basée sur les informations climatiques pour accroitre la production du sorgho en zones soudano-sahéliennes du Sénégal

Ganyo¹,

Muller²,

Gaglo³

et al. 2019

J. App. Bioscience.

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“…A high clearance, self-propelled tractor (Hamby Inc., Lubbock, TX) was used to apply N under the sprinkler, just prior to an irrigation. It used variable-rate Turbodrop Variable Rate fertilizer nozzles (Greenleaf Technologies, Covington, LA) on drops at 1-m horizontal spacing, and with a Raven SCS 440 controller (Raven Industries, Sioux Falls, SD), Raven butterfly valve, Raven GPS, and flow meter (Mon et al, 2016). Agrotain Plus was added to UAN at the rate of 0.8% by weight for 2013 to 2015.…”

Section: Methodsmentioning

confidence: 99%

Improving Nitrogen Fertilizer Use Efficiency in Surface‐ and Overhead Sprinkler‐Irrigated Cotton in the Desert Southwest

Bronson

Hunsaker

Mon

et al. 2017

Soil Science Soc of Amer J

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Nitrogen fertilizer use efficiency (NUE) is low in surface-irrigated cotton (Gossypium hirsutum L.), especially when adding N to irrigation water. A NO 3 soil-test algorithm was compared with canopy reflectance-based N management with surface-overhead sprinkler-irrigation in central Arizona. The surface irrigation studies also compared fertigation of N fertilizer with knifing-in of N and the addition of a urease and nitrification inhibitor (Agrotain Plus, Koch Agronomic Services, Wichita, KS) to urea ammonium nitrate (UAN). Cotton lint and seed yields responded positively to N fertilizer in all four site-years. Recovery efficiency (RE) of N at low N fertilizer rates (60 to 76 kg N ha-1) ranged from 21 to 61% with surface irrigation and from 81 to 97% with overhead sprinkler irrigation. Deep percolation below 1.8 m was 4 to 11% of applied surface irrigations and rain, but was undetectable in the overhead sprinkler. Leaching of NO 3 was apparently the largest N loss pathway in the surface-irrigated system. Fertigating UAN into surface irrigation resulted in similar lint yields and RE as knifing UAN. Use of Agrotain Plus with UAN gave similar yields and RE as using UAN alone. Reflectance-based N management using normalized difference vegetation index-amber (NDVIA) saved 50% of N fertilizer of the full soil-test based dose without a yield reduction in three of four site-years. Nitrogen fertilizer was over-prescribed with the soil-test-based treatment. This may have been due to not accounting for N mineralization, which the reflectance method indirectly measures.

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“…For the fertilized plots, because mineralization rates would be expected to be higher in fertilized than in the control plots [28], it is estimated that they received a rate of about 230 kg N ha −1 cycle −1 (150 from applied fertilizer + 80 from soil mineralization). Thus, if the response of yields to N fertilization was linear, yields would be around 7600 kg ha −1 , but in reality, this response is well known to increase less as N availability is increased [23,29]. In addition to mineral N resulting from OM mineralization in the present study, another contributing factor could have been related with reduced ammonia losses under CA.…”

Section: Discussionmentioning

confidence: 68%

“…Gupta et al (2009) [22] found a mean AE N for the 150 kg N ha −1 of 16.4 kg grain kg −1 N with a mean yield associated with that treatment of 4545 kg ha −1 , across three growing cycles and two soil types, with comparable N use efficiency, but lower yields than those recorded in this study. In a study conducted in Arizona, U. S. A., Mon et al (2016) [23] reported mean AE N and associated grain wheat yields during two years (2013 and 2014), for the treatment of 168 kg N ha −1 (their highest yielding treatment), across five irrigation levels, of 17 kg grain kg −1 N and approximately, 4300 kg ha −1 , respectively (in 2013) and 9 kg N ha −1 and approximately 3400 kg ha −1 , respectively (in 2014). In this same study [23], much lower AE N and yield levels were reported as N rates increased.…”

Section: Discussionmentioning

confidence: 99%

“…In a study conducted in Arizona, U. S. A., Mon et al (2016) [23] reported mean AE N and associated grain wheat yields during two years (2013 and 2014), for the treatment of 168 kg N ha −1 (their highest yielding treatment), across five irrigation levels, of 17 kg grain kg −1 N and approximately, 4300 kg ha −1 , respectively (in 2013) and 9 kg N ha −1 and approximately 3400 kg ha −1 , respectively (in 2014). In this same study [23], much lower AE N and yield levels were reported as N rates increased. Duan et al (2014) [24] reported a robust paper about NUE across four wheat production regions in China over a 15 year period and across several fertilizer treatments.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

et al. 2018

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Sustainable crop production systems can be attained by using inputs efficiently and nitrogen use efficiency (NUE) parameters are indirect measurements of sustainability of production systems. The objective of this study was to investigate the effect of selected nitrogen (N) management treatments on wheat yields, grain and straw N concentration, and NUE parameters, under conservation agriculture (CA). The present study was conducted at the International Maize and Wheat Improvement Center (CIMMYT), in northwest, Mexico. Seventeen treatments were tested which included urea sources, timing, and methods of fertilizer application. Orthogonal contrasts were used to compare groups of treatments and correlation and regression analyses were used to look at the relationships between wheat yields and NUE parameters. Contrasts run to compare wheat yields or agronomic efficiency of N (AE N ) performed similarly. Sources of urea or timing of fertilizer application had a significant effect on yields or AE N (p > 0.050). However, methods of application resulted in a highly significant (p < 0.0001) difference on wheat yields and agronomic efficiency of N. NUE parameters recorded in this study were average but the productivity associated to NUE levels was high. Results in this study indicate that wheat grew under non-critically limiting N supply levels, suggesting that N mineralization and reduced N losses from the soil under CA contributed to this favorable nutritional condition, thus minimizing the importance of N management practices under stable, mature CA systems.

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Interactive effects of nitrogen fertilization and irrigation on grain yield, canopy temperature, and nitrogen use efficiency in overhead sprinkler-irrigated durum wheat

Cited by 117 publications

References 38 publications

Optimisation du NPK et urée basée sur les informations climatiques pour accroitre la production du sorgho en zones soudano-sahéliennes du Sénégal

Optimisation du NPK et urée basée sur les informations climatiques pour accroitre la production du sorgho en zones soudano-sahéliennes du Sénégal

Improving Nitrogen Fertilizer Use Efficiency in Surface‐ and Overhead Sprinkler‐Irrigated Cotton in the Desert Southwest

Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

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