Recovery of nitrogen from different sources following applications to winter wheat at and after anthesis

Gooding, M. J.; Gregory, P. J.; Ford, Kelsey Lynett; Ruske, R. E.

doi:10.1016/j.fcr.2006.06.002

Cited by 58 publications

(39 citation statements)

References 27 publications

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“…Quando os nutrientes foram aplicados junto com o fungicida, entretanto, houve aumento da MFA, mostrando um efeito complementar entre os dois produtos em relação à sua aplicação isolada (Tabela 4). Esse fato pode estar relacionado com o N do adubo foliar, pois, quando aplicado junto com o fungicida, há aumento da sua absorção e redistribuição na planta (Gooding et al, 2007). Fato semelhante foi observado em outros trabalhos, em que foi obtido o aumento da produção de grãos e do teor de proteínas quando aplicado, na mesma calda de pulverização, o N e o fungicida (Dimmock & Gooding, 2002).…”

Section: Resultsunclassified

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

2012

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Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo Rev. Ceres, Viçosa, v. 59, n.1, p. 71-76, jan/fev, 2012 RESUMO ABSTRACT Influence of leaf mineral nutrition on wheat diseasesThe use of fungicide for controlling of wheat foliar diseases is a common practice among farmers. However, due to the environmental impact caused by widespread use, some alternative pathogen controls are needed. This work aimed to evaluate the effect of leaf mineral nutrition on the control of wheat foliar diseases, and its effect on the plant. The experiment was arranged in a randomized block design with four replications and four treatments: 1-control; 2-leaf fertilization at 30 days after emergence (DAE) and at 75 DAE; 3-fungicide at 30 and 75 DAE; and 4-leaf fertilization at 30 DAE and foliar fertilizing + fungicide at 75 DAE. Nine incidence evaluations were carried out for powdery mildew to calculate the area under the disease progress curve; three evaluations for rust severity and gluma spots; and two evaluations for yellow spot yield, mass of fresh and dry matter of aerial parts and root system were determined. There was reduction in the intensity of powdery mildew as a function of leaf fertilization, only in the first evaluation of Recebido para publicação em

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Section: Resultsunclassified

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

2012

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“…In greenhouse experiments, the recovery of 15 N-labeled N in wheat grain is generally higher for soil applications than foliar ones, although conflicting results have been observed on their capacity to increase the final GPC (Alkier et al, 1972;Rawluk et al, 2000). However, Gooding et al (2007) reported a higher recovery of N in grains in field experiments, after urea foliar application, compared to soil fertilization with ammonium nitrate.…”

mentioning

confidence: 82%

Late‐Season Nitrogen Increases Improver Common and Durum Wheat Quality

2015

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ABSTRACTe foliar N application at a low rate is a strategy that could be applied by farmers in substitution to the traditional late soil application when there are restrictions on N distribution. e aim of this study was to compare the e ect of late-season N fertilization strategies on wheat (Triticum spp.) quality. Field experiments were set up in two di erent soils, in Northwest Italy. e e ect of N fertilization was evaluated on two common (T. aestivum L.) and two durum wheat (T. turgidum L. var. durum Desf.) cultivars. Late-season N was soil-applied (40 kg N ha -1 ) as ammonium nitrate at heading, or foliar sprayed (5 kg N ha -1 ) at owering, and compared with a control without N fertilization a er the vegetative growth stage. Nitrogen soil application increased grain protein content (GPC) (+15%) for both crops. is fertilization strategy led also to higher test weight (+1.4%), kernel hardness (+14%), dough strength (W) (+42%), and lower tenacity/extensibility ratio P/L (-18%) in the common wheat, and to a lower yellowberry percentage in the durum wheat (-29%). e strategy to apply a foliar N fertilizer at anthesis at a lower rate, although it has a greater cost e ectiveness, led to a less e ective bread-or pasta-making quality enhancement, with an average increase of GPC and W only in the silt loam soil by 5 and 18%, respectively. is strategy could lead to more successful increase of GPC in soils with a probable lower nitrate leaching during the vegetative stages.

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“…Others have found later applications of N at the boot stage (GS45) were more effective at increasing CP in hard red winter wheat than applications at or prior to GS30 [3,22,49]. However, Gooding et al [50] noted foliar urea applied at or soon after anthesis increased CP but post anthesis applications pose higher risk of N loss. For an organic producer, the threshold at which tissue N testing is relevant should be based on the producer's means to apply an N source later in the season as well as their access to an organic approved N source with rapid N availability.…”

Section: In-season Test: Tissue Nitrogenmentioning

confidence: 98%

Evaluating Split Nitrogen Applications and In-Season Tests for Organic Winter Bread Wheat

Roche

Mallory

Darby

2017

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Achieving high grain yields and crude protein (CP) standards in organic winter wheat (Triticum aestivum L.) is challenging because ensuring that adequate nitrogen (N) is available at key periods of wheat growth is difficult in organic systems. Split application regimes and in-season N management tests may improve organic production. In field trials conducted over four site-years in Maine and Vermont, USA, N application regimes were analyzed for their effects on organic winter wheat, N uptake, grain yield, and CP. Tiller density and tissue N tests were evaluated as in-season decision tools. Eight treatments arranged in a non-factorial design differed in terms of N application timing (pre-plant (PP), topdress at tillering (T1), and topdress at pre-stem extension (T2)) and N rate. Treatments were: (1) an untreated check, (2) pre-plant N at a low rate of 78 kg N ha −1 (PP L ), (3) pre-plant N at a high rate of 117 or 157 kg N ha −1 (PP H ), (4) T1 78 , (5) PP L + T1 39 , (6) PP L + T2 39 , (7) PP H + T2 39 , and (8) PP L + T1 39 +T2 39 . Responses to N treatments were variable among site-years, however some common results were identified. The PP-only treatments increased grain yields more than they increased CP. The T1 78 and PP H + T2 39 treatments were the most effective at increasing yield and CP, compared with the PP-only treatments. Tiller density and tissue N tests were good predictors of grain yield (r = 0.52, p < 0.001) and CP (r = 0.75, p < 0.001) respectively.Future work should test in-season decision tools using a wider range of tiller densities, and topdress N rates against tissue N measurements.

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Recovery of nitrogen from different sources following applications to winter wheat at and after anthesis

Cited by 58 publications

References 27 publications

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

Late‐Season Nitrogen Increases Improver Common and Durum Wheat Quality

Evaluating Split Nitrogen Applications and In-Season Tests for Organic Winter Bread Wheat

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