Doses De Nitrogênio E Modos De Aplicação De Polímeros Orgânicos Com Ureia Dissolvida Na Cultura Do Milho

Souza, Fernando Henrique Queiroz; Filho, Marcelo Carvalho Minhoto Teixeira; Galindo, Fernando Shintate; Malmonge, Luiz Francisco; Malmonge, José Antônio; Buzetti, Salatiér

doi:10.32929/2446-8355.2016v25n4p361-372

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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%

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

Lino

Buzetti

Filho

et al. 2018

SCA

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…Furthermore, according to Nogueira (2016), if there is a decrease in ear insertion height with increasing boron doses, it may reduce the risk of lodging in corn plants, which could be seen as a positive result since it would be possible to increase the final stand and minimize yield losses during mechanized harvesting. However, there should be concern about the possibility of phytotoxicity from excessive doses.…”

Section: Resultsmentioning

confidence: 99%

Doses and application timing of boron on the agronomic characteristics of corn

De Carvalho,

De Brito,

Yamashita

et al. 2023

CLCS

View full text Add to dashboard Cite

Corn cultivation holds great economic importance in Brazil, as it is grown throughout the country, covering approximately 21.5 million hectares annually, with a production of 113 million tons in the 2021/2022 harvest. However, crop production is directly linked to plant nutrition, and boron (B) is one of the essential micronutrients for plant development. Its deficiency imposes limitations on Brazilian agricultural crops. Therefore, the objective of this study was to evaluate the vegetative and productive characteristics of corn in response to the application of different doses of boron at different application timings. The experimental design used was completely randomized, in a 3x5 factorial scheme, with 4 replications, consisting of the combination of 5 doses of B (0, 0.5, 1, 2, and 4 kg ha-1) applied in the sowing furrow and at the V4 and V7 phenological stages. Plant height, first ear insertion height, stem diameter, number of rows per ear, number of grains per row, number of grains per ear, ear weight, grain weight per plant, and 100-grain weight were evaluated. No significant differences were observed between the doses and/or timing of boron application in the hybrid corn used in this study.

show abstract

“…A elaboração dos polímeros orgânicos foi baseada em Souza et al (2016), que observaram maior eficiência do polímero orgânico com ureia dissolvida (C1) em relação à ureia convencional quando aplicado em superfície no solo, propiciando maior matéria seca de planta de milho. Após elaboração dos polímeros orgânicos à base de látex, estes foram cortados e padronizados com cerca de 2 mm de espessura e 0,50 cm 2 .…”

Section: Methodsunclassified

Polímeros orgânicos com ureia dissolvida e doses de nitrogênio no milho

Petean

Filho

Galindo

et al. 2019

RCA

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Doses De Nitrogênio E Modos De Aplicação De Polímeros Orgânicos Com Ureia Dissolvida Na Cultura Do Milho

Cited by 4 publications

References 0 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

Doses and application timing of boron on the agronomic characteristics of corn

Polímeros orgânicos com ureia dissolvida e doses de nitrogênio no milho

Contact Info

Product

Resources

About