Timing and Splitting of Nitrogen Side-Dress Fertilization of Early Corn Hybrids for High Grain Yield

Panison, Fernando; Sangoi, Luís; Durli, Murilo Miguel; Leolato, Lucieli Santini; Coelho, Antônio Eduardo; Kuneski, Hugo François; Liz, Vander Oliveira de

doi:10.1590/18069657rbcs20170338

Cited by 11 publications

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“…In Lages, in the state of Santa Catarina, Brazil, Sangoi et al (2007) found increases of 13.9 to 38.8 kg grains per kilogram of N for a rate of 100 kg ha -1 N applied at different times of the crop cycle. Panison et al (2019) observed variations according to cultivar, growing season, and fertilization time. These authors also concluded that fertilization efficiency may be reduced under higher N rates, high SOM content, and yield levels lower than the expected.…”

Section: Resultsmentioning

confidence: 91%

Nitrogen fertilization in off-season corn crop in different Brazilian Cerrado environments

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Pesq. agropec. bras.

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The objective of this work was to assess the grain yield and the economic response of off-season corn (Zea mays) crop subjected to different combinations of starter and topdressing nitrogen fertilization, in the Brazilian Cerrado region. The experiment was carried out in a randomized complete block design in a 3×4 factorial arrangement (0, 45, and 90 kg ha-1 N at sowing and 0, 22.5, 45, and 90 kg ha-1 N in topdressing as urea), in six environments, combining three sites and two sowing times. Grain yield was determined, and the response to total N applied as starter and topdressing was used to obtain a general model of the average trend of the technical and economic return of fertilization. The corn crop response varied according to the environment, and the observed yields were high. The application of N as a starter fertilizer increased corn yield and improved the effect of topdressing fertilization or even made it unnecessary. Fertilization with 90 kg ha-1 N as urea promotes greater yield and economic return and improves N balance in the soybean/off-season corn crop system.

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Section: Resultsmentioning

confidence: 91%

Nitrogen fertilization in off-season corn crop in different Brazilian Cerrado environments

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“…Em sistemas de consórcio simultâneo, uma alternativa de implantação, é a semeadura conjunta da braquiária e aplicação de fertilizantes, podendo ser durante a implantação da cultura granífera ou em sobressemeadura durante a adubação de cobertura (MATEUS et al, 2016;ALMEIDA et al, 2017). 742 A adubação nitrogenada em cobertura é uma prática agronômica consolidada para diversas espécies cultivadas (SPACKMAN et al, 2019), fornecendo o nutriente no tempo mais apropriado, de maior demanda da cultura estabelecida (PANISON et al, 2019). A semeadura da braquiária nesse momento, após o estabelecimento da cultura principal, visa estabelecer uma pastagem com alto valor bromatológico e de alto rendimento de biomassa (TAFFAREL et al, 2018), com uma menor interferência na produtividade da cultura principal.…”

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Tempos De Contato E Níveis De Mistura De Ureia Com Sementes De Braquiária Brizantha Cv. Marandu Para Sistemas Integrados

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Amaral²,

Pereira³

et al. 2019

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The use of high-quality seeds is a premise for the implantation of pasture for the generation of sustainable farming systems in livestock production. A usual practice is to mix brachiaria seeds with nitrogenous or phosphate fertilizers to sown and sidedressing. The objective of this study was to study the effect of contact time (0, 3, 12, 24, 48 and 72 hours) of urea mineral fertilizer with Brachiaria brizantha cv. Marandu high-quality seeds, in its physiological quality (germination and vigor). A completely randomized experimental design with additional treatment (seeds without fertilizer) was used, with three replicates, in laboratory and chamber conditions. Percentage of seedling emergence, germination of normal and abnormal seedlings and dead seeds were evaluated. Seeds were sown over the papers placed in gerboxes under controlled conditions of photoperiod and temperature (35°C for 8 hours of light and 20°C for 16 in dark conditions). It was found that after 72 hours of contact, all seeds lose its viability. The number of dead seeds presented significant (p <0.001) and negative correlation of 98.63% for the number of normal seedlings. The mix ratio between urea and seed affects the rate of seed deterioration, expressed as the lowest percentage of seedlings emerged in the sand, in relation to seeds not in contact with urea (control). It is concluded that from the reduction in viability and vigor begin after 3 hours of contact with fertilizers, so the number of unviable seeds highly increase after 48-hours contact.

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“…The data gathered in Lages and Atalanta did not confirm this hypothesis. Trials carried out by Cardoso et al (2011), Cruz et al (2008 and Panison et al (2019) in different production regions of Brazil also did not detect increments of maize grain yield with the fractioning on N side-dressing fertilization.…”

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confidence: 81%

Sowing date and maize response to the splitting of nitrogen side-dressing fertilization

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The splitting of nitrogen side-dressing fertilization with the application of a nitrogen dose at maize tasseling may increase grain yield, mainly when the crop is sown at the most favorable date to achieve high productivity. This research was carried out to evaluate the effect of sowing date on the response of maize to the splitting of nitrogen side-dressing fertilization at different growth stages. Two sowing dates were tested: preferential (10/15/2015 and 09/20/2016) and late (12/5/2015 and 12/5/2016). Six nitrogen side-dressing management treatments were evaluated at each sowing date: control without N; complete nitrogen rate applied at phenological stages V5, V10 and VT; ½ N rate at V5 + ½ N rate at V10; and ⅓ N rate at V5 + ⅓ N rate at V10 + ⅓ N rate at VT. The N rate was equivalent to 300 kg ha-1. Grain yield ranged from 8.9 to 15.3 t ha-1 in Lages and from 7.4 to 16.4 t ha-1 in Atalanta. There were no significant differences in grain yield and agronomic efficiency of nitrogen use (AE) among the treatments with the entire N side-dressing fertilization at V5 and V10 and those when the nutrient was split into two or three times, regardless of sowing date. AE was higher when the crop was sown at the preferential sowing date than in the late sowing date, regardless of N side-dressing application. The splitting of nitrogen fertilization up to the crop tasseling did not increase maize grain yield or AE.

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Timing and Splitting of Nitrogen Side-Dress Fertilization of Early Corn Hybrids for High Grain Yield

Cited by 11 publications

References 18 publications

Nitrogen fertilization in off-season corn crop in different Brazilian Cerrado environments

Nitrogen fertilization in off-season corn crop in different Brazilian Cerrado environments

Tempos De Contato E Níveis De Mistura De Ureia Com Sementes De Braquiária Brizantha Cv. Marandu Para Sistemas Integrados

Sowing date and maize response to the splitting of nitrogen side-dressing fertilization

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