Residual Effects of Nitrogen Fertilizer With Polymer-Coated Urea in a Corn Crop

Mello, Tayene Franco; Buzetti, Salatiér; Filho, Marcelo Carvalho Minhoto Teixeira; Galindo, Fernando Shintate; Nogueira, Lais Meneghini

doi:10.1590/1983-21252017v30n306rc

Cited by 10 publications

(11 citation statements)

References 19 publications

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“…According to Mello et al (2017), the responses of improved efficiency fertilizers depend on microbial action. Chemically altered fertilizers will convert some of the nutrients into insoluble forms that become available for plants gradually, whereas the covered or encapsulated formulations, such as those used in this research, consist in soluble compounds surrounded by a water-permeable resin that regulates the nutrient release process.…”

Section: Resultsmentioning

confidence: 99%

“…Fertilization is one of the factors that most affects the productivity and sustainability of agriculture, therefore, fertilizer consumption by the corn crop in Brazil has grown remarkably in recent years, mainly because it has been demonstrated to increase crop productivity (ARAÚJO, 2011;SOUZA et al, 2016;MELLO et al, 2017). Phosphorus (P) is one of the most limiting nutrients for agricultural crops (CHIEN et al, 2011;MCLAUGHLIN et al, 2011), especially in soils of tropical regions, which are generally low in P and moderately to highly acidic (ARAÚJO, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Effect of phosphorus applied as monoammonium phosphate-coated polymers in corn culture under no-tillage system

Lino

Buzetti

Filho

et al. 2018

SCA

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The use of phosphate fertilizers as coated polymers reduces phosphorus losses that occur by adsorption of P to soil particles, thereby providing this essential nutrient for a longer period. The objective of this study was to evaluate the effect of phosphorus doses applied as conventional monoammonium phosphate or as coated polymers on corn grown in a clayey Oxisol, in the Cerrado region. The experiment was conducted in Selvíria - MS, located at 22°22? S and 51°22? W. The experiment was laid out in a randomized block design arranged as a 4 × 2 factorial, with four doses of P2O5 (0, 50, 100, and 150 kg ha-1) and two sources of phosphorus (monoammonium phosphate (MAP) and monoammonium phosphate coated polymers). The experiment was conducted under no-tillage system during the cropping seasons in 2008/09 and 2009/10. The MAP and MAP-coated sources did not differ in most of the yield components in either of the two seasons. We found a quadratic function adjustment for P doses up to 117 and 98 kg ha-1 of P2O5 for P concentration in leaf tissue and grain yield in the 2008/2009 crop, respectively. We also obtained a quadratic function adjustment for P rates for grain yield and number of plants, up to 118 and 113 kg ha-1 of P2O5, respectively, in the 2009/2010 harvest.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of phosphorus applied as monoammonium phosphate-coated polymers in corn culture under no-tillage system

Lino

Buzetti

Filho

et al. 2018

SCA

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“…Resultados semelhantes foram obtidos por Mello et al (2017), trabalhando com 4 doses de N (0, 40, 80 e 120 kg ha -1 ) e 4 formas de ureia (ureia convencional e ureias revestidas por 3 diferentes polímeros), que não verificaram diferença entre as fontes nitrogenadas, corroborando com Valderrama et al (2011), que também não constataram diferença entre a ureia convencional e revestida por polímeros para produtividade de grãos de milho na safra de verão na região de Cerrado. Em contrapartida, Pereira et al (2009), verificaram em Jataí -GO, região de Cerrado com altitude mais elevada, onde a temperatura noturna é menor quando comparada com a do presente estudo, que o revestimento da ureia e o inibidor da urease foram eficientes na redução da volatilização do N (em torno de 50%) da ureia aplicada em cobertura, o que refletiu em maiores produtividades de grãos.…”

Section: Tratamentos Cu Fe Mn Zn ------------------------------(Mg Kgunclassified

“…Como forma de suprir a necessidade de consumo de alimentos no mundo, tem-se intensificado as áreas de cultivo visando maiores produtividades, principalmente por meio de investimentos em pesquisa e desenvolvimento agrícola, sobretudo na obtenção de materiais genéticos mais produtivos e no aumento da eficiência de uso dos fertilizantes aplicados (Mello et al, 2017). Dentre os insumos utilizados na agricultura, os fertilizantes nitrogenados são os que mais oneram o custo de produção, em função do potencial elevado de perdas por volatilização, lixiviação e nitrificação (Robertson & Groffman, 2007), além da demanda de N em culturas não leguminosas.…”

Section: Introductionunclassified

Polímeros orgânicos com ureia dissolvida e doses de nitrogênio no milho

Petean

Filho

Galindo

et al. 2019

RCA

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PALAVRAS-CHAVE Zea mays Fertilizantes de liberação gradual Adubação nitrogenada Eficiência agronômica Produtividade de grãos KEYWORDS Zea mays Gradual release fertilizers Nitrogen fertilization Agronomic efficiency Grain yield Polímeros orgânicos com ureia dissolvida e doses de nitrogênio no milho Organic polymers with dissolved urea and nitrogen rates in maize RESUMO: A eficiência da adubação nitrogenada com ureia pode e deve ser melhorada em função das perdas por volatilização da amônia. Nesse contexto, a utilização de polímeros orgânicos de liberação lenta pode ser uma alternativa para um melhor aproveitamento do fertilizante nitrogenado. O objetivo foi avaliar o efeito de doses de N na forma de polímeros orgânicos à base de látex com ureia dissolvida, no estado nutricional, componentes de produção e produtividade de grãos de milho, assim como, analisar o residual de N dos polímeros orgânicos e a eficiência agronômica dos tratamentos. O experimento foi desenvolvido no município de Selvíria-MS, em um Latossolo Vermelho Distrófico em sistema plantio direto. O delineamento experimental utilizado foi em blocos ao acaso com quatro repetições, dispostos em um esquema fatorial 5 x 4, sendo: 5 fontes de N (P1 = polímero orgânico com 30% de ureia dissolvida em água e 6,86% de N, P2 = polímero orgânico com 70% de ureia dissolvida em água e 19,35% de N, P3 = polímero orgânico com 30% de ureia dissolvida e 9,65% de N, P4 = polímero orgânico com 70% de ureia dissolvida e 11,00% de N e U = ureia com 45% de N) e 4 doses de N (0, 60, 120 e 180 kg ha-1). As fontes de N não diferiram quanto à produtividade de grãos de milho. Porém, nas maiores doses de N (120 e 180 kg ha-1), o polímero P1 obteve as maiores eficiências agronômicas, apesar do P2 ter se sobressaído na dose de 120 kg ha-1 de N. A produtividade de grãos de milho aumentou linearmente com o incremento das doses de N dos polímeros P1, P3 e P4 e até a dose de 107 kg ha-1 de N para o polímero P2.

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“…The effectiveness of the coated fertilizers depends on the solubility of the polymer coating the granule and the hydrolysis, which will regulate the nutrient supply process (Mello et al, 2017). These rates of release and dissolution of water-soluble fertilizers depend on the coating materials (Rodrigues et al, 2013).…”

Section: Nutritional Productive Components and Corn Grain Yieldmentioning

confidence: 99%

Doses of Phosphorus in Monoammonium Phosphate form Incorporated in Biodegradable Polymers for Corn

Martins¹,

Filho²,

Galindo³

et al. 2018

JAS

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The use of monoammonium phosphate (MAP) dissolved in organic polymers can reduce the fixation of phosphorus in the soil, and thus provide greater availability of this nutrient for long-term crops. The objective of this study was to evaluate the effect of doses of phosphorus in conventional form and incorporated MAP in biodegradable polymers, evaluating nutritional status, production components and corn grain yield, as well as the residual effect of P and N. The experiment was conducted in a no- tillage system consolidated for more than 10 years in a Latossolo Vermelho distrófico (Oxisol) with a clay texture located in Selvíria, MS, Brazil. The experimental design was a randomized block design with four replicates, arranged in a 4 × 4 factorial scheme, four forms of MAP (conventional, P1 = polymers with 30% MAP + water, P2 = polymers with 70% MAP + water and P3 = polymers with 30% of MAP), and four doses of P2O5 (0, 60, 120 and 180 kg ha-1), applied soon after emergence of the seedlings in the corn sowing line. Polymer P1 released higher amounts of P to the soil up to the R1 stage of corn, also provided the highest grain yield, indicating to be the most promising for use in Brazilian Cerrado soil.

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Residual Effects of Nitrogen Fertilizer With Polymer-Coated Urea in a Corn Crop

Cited by 10 publications

References 19 publications

Effect of phosphorus applied as monoammonium phosphate-coated polymers in corn culture under no-tillage system

Effect of phosphorus applied as monoammonium phosphate-coated polymers in corn culture under no-tillage system

Polímeros orgânicos com ureia dissolvida e doses de nitrogênio no milho

Doses of Phosphorus in Monoammonium Phosphate form Incorporated in Biodegradable Polymers for Corn

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