Different increases in maize and wheat grain zinc concentrations caused by soil and foliar applications of zinc in Loess Plateau, China

Wang, Jianwei; Mao, Hui; Zhao, Hubing; Huang, Duan; Wang, Zhaohui

doi:10.1016/j.fcr.2012.07.010

Cited by 129 publications

(114 citation statements)

References 65 publications

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“…This study together with those studies suggest that biofortification of maize with Zn by an agronomic approach is also promising as in the case of wheat (Cakmak 2008). Without Zn application, grain Zn HI was about 50 %, similar with previous studies (Jarausch-Wehrheim et al 1999;Wang et al 2012). However, a larger portion of Zn was allocated to vegetative organs with declining grain Zn HI when Zn was applied irrespective of placement (Table 3).…”

Section: Discussionsupporting

confidence: 74%

“…Thus, Zn application evenly within soil layers of 0-30 cm or alternatively 0-15 cm (by spraying Zn solutions on the topsoil before plowing or by broadcasting Zn-enriched NPK fertilizer and then mixing it into plow layer during field preparation) is expected to match well with root distribution, which would be expected to best enable Zn uptake by roots and, therefore, accumulation into the shoot. Furthermore, low in-season RE Zn (<1 %) matched with previous studies (Zhao et al 2011;Wang et al 2012), indicating that considerable amount of available Zn was retained in soil and a residual effect of Zn application therefore would be expected.…”

Section: Discussionsupporting

confidence: 66%

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Zinc fertilizer placement affects zinc content in maize plant

et al. 2013

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Background and aims Adequate zinc (Zn) in maize (Zea mays L.) is required for obtaining Zn-enriched grain and optimum yield. This study investigated the impact of varying Zn fertilizer placements on Zn accumulation in maize plant. Methods Two pot experiments with same design were conducted to investigate the effect of soil Zn h etero ge neity by mixing Zn SO 4 ·7H 2 O (10 mg Zn kg −1 soil on an average) in 10-15, 0-15, 25-30, 0-30, 30-60 and 0-60 cm soil layers on maize root growth and shoot Zn content at flowering stage in experiment-1, and assessing effects on grain Zn accumulation at mature stage in experiment-2. Results In experiment-1, Zn placements created a large variation in soil DTPA-Zn concentration (0.3-29.0 mg kg −1 ), which induced a systemic and positive response of root growth within soil layers of 0-30 cm; and shoot Zn content was increased by 102 %-305 % depending on Zn placements. Supply capacity of Zn in soil, defined as sum of product of soil DTPA-Zn concentration and root surface area at different soil layers, was most related to shoot Zn content (r=0.82, P<0.001) via direct and indirect effects according to path analysis. In experiment-2, Zn placements increased grain Zn concentration by up to 51 %, but significantly reduced the grain Zn harvest index from 50 % by control to about 30 % in average. Conclusion Matching the distribution of soil applied Zn with root by Zn placement was helpful to maximize shoot Zn content and grain Zn concentration in maize.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 66%

Zinc fertilizer placement affects zinc content in maize plant

et al. 2013

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“…O trigo (Triticum aestivum L.) é o segundo cereal mais produzido no mundo e em diversos países é a fonte de aproximadamente metade das calorias e proteínas consumidas pela população (Wang et al, 2012). No Brasil, é a cultura de inverno de maior importância, cultivada principalmente nas regiões Sul, Sudeste e Centro-Oeste.…”

Section: Introductionunclassified

Produtividade Do Trigo Irrigado Submetido À Aplicação De Nitrogênio E À Inoculação Com Azospirillum Brasilense

Nunes

Aquino

Santos

et al. 2015

Rev. Bras. Ciênc. Solo

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E-mail: leonardo.aquino@ufv.br resumo inocular sementes de trigo com Azospirillum brasilense pode ser benéfico à cultura do trigo, bem como reduzir a necessidade de aplicação de n. no entanto, são escassos trabalhos que mensurem o benefício dessa prática no trigo irrigado com expectativa de alta produtividade e demanda de n. objetivou-se com este trabalho avaliar a produtividade e o conteúdo de n na planta do trigo irrigado, submetido a doses de n, com ou sem a inoculação com A. brasilense. Foram conduzidos dois experimentos em 2011 e repetidos em 2012. em cada ano de cultivo, instalou-se um experimento na área considerada de baixa disponibilidade de n no solo (cultivo em sucessão ao milho) e outro na com alta disponibilidade (cultivo em sucessão à soja ou cenoura). Os tratamentos consistiram de cinco doses de N e da inoculação ou não com A. brasilense. as doses de n testadas foram 20, 60, 100, 140 e 180 kg ha -1 na área com baixa disponibilidade de n e 20, 50, 80, 110 e 140 kg ha -1 na com alta disponibilidade. o teor de n na folha índice foi aumentado pela inoculação com A. brasilense. entretanto, o N absorvido não foi influenciado pela inoculação da bactéria. As doses de N aumentaram a produtividade do trigo e esse aumento foi mais evidente no cultivo na área com baixa disponibilidade de n no solo. palavras-chave: Triticum aestivum L., fixação de N 2 , bactérias diazotróficas.Recebido para publicação em 24 de junho de 2014 e aprovado em 7 de outubro de 2014.

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“…Thus, this newly discovered possibility of micronutrient uptake as particles from both shoot and root could direct completely novel R&D efforts in fertilizer delivery strategies that allow uptake of nanopackaged Because micronutrients packaged and delivered to crops as nanoparticles (NPs) often demonstrate superiority in performance indicators over salts or bulk micronutrients, these outcomes could be taken as a collective research focus involving the development and use of novel micronutrient-packaging strategies, namely nanoparticles, for enhanced crop performance over bulk minerals or nutrient salts administered through different plant organs. Image modified from Prasad et al (2012), Raliya and Tarafdar (2013), and Servin et al (2015a), with permission micronutrients, so that they accumulate, are redistributed, and solubilized inside plant tissues, as shown for Cu, Zn, and also Mg (Dimkpa et al 2012b(Dimkpa et al , 2013aWang et al 2012aWang et al , b, 2013aLv et al 2014). Nanofertilizers are already used in crop production in China, but reported only for urea (Huang et al 2015), and should therefore be extended to micronutrients.…”

Section: Some Ways Forwardmentioning

confidence: 99%

“…Notably, the presence of nutrient NPs in shoots has been demonstrated from both root (Zhu et al 2008;Dimkpa et al 2012bDimkpa et al , 2013aWang et al 2012a, b;Ghafariyan et al 2013;Bandyopadhyay et al 2015) and foliar (Wang et al 2013a, b) applications in wheat, watermelon (Citrullus lanatus), corn, alfalfa, pumpkin (C. pepo), and soybean, among other crops. Regardless of the application route, the presence of micronutrient particles could be residual enough to allow transportation from point source to distal plant parts (Wang et al 2012a(Wang et al , b, 2013a, or they could dissolve in planta, sometime after uptake, releasing the cognate metal ions for plant metabolism. This latter possibility is suggested by the in planta formation of metal-organic/amino acids or phosphate complexes (Zhu et al 2008;Dimkpa et al 2012bDimkpa et al , 2013aLv et al 2014).…”

Section: Uptake Of Nanoparticulate Nutrientsmentioning

confidence: 99%

Fortification of micronutrients for efficient agronomic production: a review

Dimkpa

Bindraban

2016

Agron. Sustain. Dev.

276

163

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Micronutrients are essential mineral elements required for both plant and human development. However, micronutrients are often lacking in soils, crop, and food. Micronutrients are therefore used as fertilizer to increase crop productivity, especially when the application of conventional NPK fertilizers is not efficient. Here, we review the application of micronutrients in crop production. Reports show that micronutrients enhance crop nutritional quality, crop yield, biomass production, and resiliency to drought, pest, and diseases. These positive effects range from 10 to 70 %, dependent on the micronutrient, and occur with or without NPK fertilization. We discuss the uptake by plants of micronutrients as nanosize particulate materials, relative to conventional uptake of ionic nutrients. We also show that packaging of micronutrients as nanoparticles could have more profound effects on crop responses and fertilizer use efficiency, compared to conventional salts or bulk oxides.

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Different increases in maize and wheat grain zinc concentrations caused by soil and foliar applications of zinc in Loess Plateau, China

Cited by 129 publications

References 65 publications

Zinc fertilizer placement affects zinc content in maize plant

Zinc fertilizer placement affects zinc content in maize plant

Produtividade Do Trigo Irrigado Submetido À Aplicação De Nitrogênio E À Inoculação Com Azospirillum Brasilense

Fortification of micronutrients for efficient agronomic production: a review

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