Desempenho agronômico de híbridos de milho verde em função da adubação nitrogenada de cobertura

Aguiar, Carla Brendha Neves; Coimbra, Ronaldo Rodrigues; Paula, Milton José de; Freitas, Maria Kassia Carneiro de; Oliveira, Rafael José de

doi:10.4322/rca.2012.031

Cited by 4 publications

(6 citation statements)

References 7 publications

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“…Carmo et al (2012), applying 150 kg ha -1 of nitrogen in a summer crop in Palmeiras, Goiás State, Brazil. In the winter/spring season, nitrogen doses did not increase yield (Figure 3), agreeing with Aguiar et al (2012), which applied nitrogen doses from 0 to 144 kg ha -1 to sweet corn grown in Gurupi, Tocantins State, Brazil.…”

Section: Resultssupporting

confidence: 61%

Effect of irrigation and nitrogen fertilization on agronomic traits of sweet corn1

Souza

Cunha

Magalhães

et al. 2015

Pesqui. Agropecu. Trop.

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Irrigation and nitrogen fertilization are management practices that have positive results for the corn crop. This study aimed at evaluating the effect of nitrogen fertilization and irrigation on agronomic traits of sweet corn. Two experiments were carried out in two crop seasons (winter/spring and summer/autumn), in a split-plot design, with the main plots consisting of four irrigation levels (50 %, 75 %, 100 % and 125 % of the crop evapotranspiration - ETc) and subplots consisting of four nitrogen doses (0 kg ha-1, 100 kg ha-1, 200 kg ha-1and 300 kg ha-1), applied at the V3 and V8 stages, via urea, in a randomized blocks design experiment, with four replications. Leaf nitrogen content, root depth, plant height, stem diameter, ear yield and water use efficiency were evaluated. In the winter/spring season, nitrogen fertilization did not affect yield, while in the summer/autumn season the dose that maximized yield was 300 kg ha-1. Sweet corn showed better results when irrigated with replacements of 50 % and 125 % of ETc, respectively in the summer/autumn and winter/ spring seasons.

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Section: Resultssupporting

confidence: 61%

Effect of irrigation and nitrogen fertilization on agronomic traits of sweet corn1

Souza

Cunha

Magalhães

et al. 2015

Pesqui. Agropecu. Trop.

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Section: Resultssupporting

confidence: 88%

“…The ED found were similar to those reported by Aguiar et al (2012) for a CTS; they found a mean ED of 4.60 cm, considering 22 sweet corn genotypes. The higher EL was found in the NTS (Table 4), however, the ears reached diameter and length means consistent with the commercial ear classification in both tillage systems, i.e., ED higher than 3 cm and EL higher than 15 cm (AGUIAR et al, 2012). The higher ear growth in the NTS, shown by the EL (Table 4), may be correlated to the soil cover in this system, which favors soil water storage and availability (FIGUEIREDO;RAMOS;TOSTES, 2008).…”

Section: Resultssupporting

confidence: 88%

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Agronomic Performance of Irrigated Crop Rotations Under Conventional and No-Tillage Systems in the Semiarid Region of Minas Gerais, Brazil

et al. 2022

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The objective of this work was to evaluate the agronomic performance and water use efficiency of crop rotations under conventional system (CTS) and no-tillage system (NTS) through two experiments conducted in the Semiarid region of the northern state of Minas Gerais, Brazil. Experiment 1 consisted of a grain corn-common bean rotation, and experiment 2 consisted of a sorghum-sweet corn rotation. The treatments, in both experiments, consisted of two tillage systems (CTS and NTS) arranged in strip-plots, in two crop years, with ten replications. Yield and production components of all crops and water use efficiency (WUE) of crops grown in the autumn-winter seasons were evaluated within each crop rotation. The data obtained were subjected to analysis of variance and, when significant, the means were subjected to the F test at 5% significance level. The results obtained showed that the NTS increases corn yield in 21.45% in the grain corn-common bean rotation; however, the common bean yield present no difference between tillage systems. NTS increases the sorghum fresh and dry matter yields in 39.65% and 84.26%, respectively, in the sorghum- sweet corn rotation, and the sweet corn total and commercial ear yield in 11.99% and 21.80%, respectively. The NTS increases the WUE of crops grown in the autumn-winter season, in both crop rotations.

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“…Várias estratégias podem ser tomadas com o intuito de aumentar a eficiência no uso de N, tais como a redução das doses de adubos (Aguiar et al, 2012) para níveis que sejam produtivos e seguros; a utilização de leguminosas em rotação, que fornecem N e melhoram várias características do solo; a fixação biológica de N em gramíneas; a agricultura de precisão, e a seleção e/ou o desenvolvimento de cultivares com maior eficiência no uso de N (Carvalho et al, 2012).…”

Section: Introductionunclassified

Variabilidade genética e eficiência de uso do nitrogênio em populações de milho para teor de óleo

Santos¹,

Pelúzio²,

Afférri³

et al. 2014

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RESUMO:Populações de milho (Zea mays L.) com características desejáveis e eficientes quanto ao uso de nutrientes são promissoras para uso em agricultura de baixo nível tecnológico. Assim, o presente trabalho foi realizado com o objetivo de estudar a variabilidade genética e identificar populações eficientes quanto ao uso do nitrogênio (N), visando à produção de óleo nos grãos. Neste sentido, foram realizados quatro ensaios de competição de populações de milho em Palmas, Tocantins, sendo dois ensaios na safra e dois na entressafra, sob condições de alto (150 kg ha -1 de N) e baixo N (0 kg ha -1 de N) em cobertura. O delineamento experimental utilizado em cada ensaio foi de blocos casualizados com três repetições e dez tratamentos. Foi determinada a eficiência do uso de N por meio da metodologia de Fischer e a divergência genética pelo método de agrupamento de otimização de Tocher, para o teor de óleo nos grãos. No estudo da divergência genética, cada ensaio representou uma variável distinta no modelo multivariado. Os ensaios de safra e entressafra, independentemente das doses de N, foram similares para o teor de óleo nos grãos. As populações POP 12 e POP 13 são potencialmente promissoras para produção de óleo e eficientes no uso do N.

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Desempenho agronômico de híbridos de milho verde em função da adubação nitrogenada de cobertura

Cited by 4 publications

References 7 publications

Effect of irrigation and nitrogen fertilization on agronomic traits of sweet corn1

Effect of irrigation and nitrogen fertilization on agronomic traits of sweet corn1

Agronomic Performance of Irrigated Crop Rotations Under Conventional and No-Tillage Systems in the Semiarid Region of Minas Gerais, Brazil

Variabilidade genética e eficiência de uso do nitrogênio em populações de milho para teor de óleo

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