Épocas de Aplicação de Nitrogênio na Cultura do Milho Num Latossolo Vermelho muito Argiloso Sob Plantio Direto

Rocha, Kassiano Felipe; Cassol, Luís César; Piva, Jonatas Thiago; Arruda, Josicléa Hüffner; Minato, Evandro Antonio; Faversani, Jéssica Carolina

doi:10.18512/1980-6477/rbms.v13n3p273-284

Cited by 3 publications

(4 citation statements)

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“…Similar results were observed by Ceretta et al (2002) and Rocha et al (2014), which showed no difference in maize yield among different N application times. This lack of difference, occurs mainly in clayey soils with a medium to high organic matter content (Ceretta et al, 2002), such as the soil in this study ( Table 1).…”

Section: Resultssupporting

confidence: 86%

“…However, in some studies, maize mass of a thousand grains variation has been observed due to soil and climatic conditions (Caires & Milla, 2016) and N rates (Soratto et al, 2010), corroborating with our findings in 2012/13 and 2013/14. In work conducted by Rocha et al (2014) in an oxisol, there was also no significant difference for this variable when splitting the N application.…”

Section: Resultsmentioning

confidence: 93%

“…This agrees with results found by Santos et al (2010a), in which pre-sowing application of N, resulted in a lower yield of maize compared to application at the V4 stage. The lower maize yield in T2 is owing to possible losses, mainly due to nitrate leaching (Rocha et al, 2014), caused by excessive rainfall during this period ( Figure 1C).…”

Section: Resultsmentioning

confidence: 99%

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Management of nitrogen fertilization in maize cultivated in succession to black oats in a temperate climate

et al. 2018

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The objective of this study was to verify early nitrogen (N) fertilization on maize cultivated in succession to black oats. We conducted three experiments, relating to the 2012/13, 2013/14, and 2014/15 growing seasons, at UFSC-Curitibanos, in a randomized complete block experimental design, with four treatments and four replicates. The treatments were N management strategies in which the amount of N applied to maize was split into pre-sowing, at sowing, and topdressing times: (T1) control with no N application; (T2) 2/3 - 1/3 - 0; (T3) 1/3 - 1/3 - 1/3; and (T4) 0 - 1/3 - 2/3. The biometrics and productive potential parameters of the crop were evaluated. Application of N, regardless of the treatment, increased the yield. In 2012/13, there were no significant differences between the ways in which the N application was split, although they produced a higher yield than the control, resulting in a mean yield of 5,008 kg ha-1. In 2013/14, T2 was similar to T3 and T4, resulting in a yield of 9,858 kg ha-1; in 2014/15, T3 and T4 were similar, with a mean yield of 12,466 kg ha-1, while T2 resulted in a lower yield of 10,487 kg ha-1. When 2/3 of the N is applied pre-sowing, it is only effective when it is associated with the occurrence of a drought period at an early developmental stage of the plants. In adequate rainfall conditions, the early application of N fertilization is only effective when combined with a further 1/3 of the amount of N at sowing, and later as a topdressing.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 93%

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Management of nitrogen fertilization in maize cultivated in succession to black oats in a temperate climate

et al. 2018

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“…Other sources result in higher N losses related to volatilization of ammonia (NH 3 + ), denitrification, soil erosion (CIVARDI et al, 2011), and immobilization by microbial biomass (ROCHA et al, 2014). The efficiency of this N source N in the end benefits the profitability of livestock enterprises (SANTINI et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen dosage and urea source on morphological composition and forage accumulation in massai grass

Silva

Carvalho

Pires

et al. 2018

SCA

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The effects of nitrogen (N) dose and urea source on forage mass (FM), percentage of dry matter of leaf blades (LBDMP), stem (SDMP), and dead material (DMDMP), and the forage accumulation rate (FAR) of Panicum maximum 'Massai' (massai grass) were evaluated. We set up an experiment with a completely randomized block design in a factorial arrangement (3×2) + 1, consisting of three doses (100, 200, and 400 kg ha -1 year -1 ), two urea sources (common and coated with Policote ® ), and a control treatment, in five consecutive climatic seasons, including the summers of 2011/2012 (summer I), autumn, winter, and spring of 2012, and the summers of 2012/2013 (summer II). We found an interaction effect between N dose, urea source, and season (p < 0.05). LBDMP linearly increased during dry periods (autumn and winter) and SDMP in autumn and DMDMP in winter linearly decreased when coated urea were used. FAR showed a linear increase with the use of both urea sources, except for common urea in autumn, and the increases in the winter were owing to a greater contribution of leaf blades to FM. The use of coated urea for N fertilization linearly increases FAR in all seasons of the year and improves the morphological composition of the forage of massai grass, mainly in dry seasons. Key words: Forage accumulation rate. Leaf blade dry matter percentage. Nitrogen fertilization. Panicum maximum. ResumoAvaliou-se a eficiência de doses de nitrogênio (N) e fontes de ureia sobre as variáveis massa de forragem (MF), porcentagens de massa seca de lâminas foliares (PMSLF), colmos (PMSC) e de material morto (PMSMM), além da taxa de acúmulo de forragem (TAF) do Panicum maximum cv. Massai (capim Massai). Para tanto, delineou-se um experimento em blocos completos casualizados, em arranjo fatorial (3x2) + 1; constando de três doses de N (100, 200 e 400 kg ha-1 ano-1), duas fontes ureia (comum e revestida com Policote ® ) e um tratamento controle, em cinco estações climáticas consecutivas, verão de 2011/2012 (verão I), outono, inverno e primavera de 2012, e verão de 2012/2013 (verão II). As variáveis analisadas apresentaram efeito de interação entre dose de N, fonte de ureia e estações do ano (p < 0,05 da PMSC no outono e da PMSMM no inverno para o uso da ureia revestida. As TAF apresentaram aumento linear com uso de ambas às fontes de ureia, exceto para ureia comum no outono, e aquelas obtidas durante o inverno ocorreram em função das maiores participações de lâminas foliares nas MF. O aumento da adubação nitrogenada com ureia revestida aumenta de forma linear positiva a taxa de acúmulo de forragem em todas as estações do ano e melhora a composição morfológica da forragem do capim Massai, principalmente em estações com déficit hídrico. Palavras-chave: Adubação nitrogenada. Panicum maximum. Porcentagem de massa seca de lâminas foliares. Taxa de acúmulo de forragem.

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Agronomic evaluation of Herbaspirillum seropedicae strain ZAE94 as an inoculant to improve maize yield in Brazil

et al. 2021

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Épocas de Aplicação de Nitrogênio na Cultura do Milho Num Latossolo Vermelho muito Argiloso Sob Plantio Direto

Cited by 3 publications

References 0 publications

Management of nitrogen fertilization in maize cultivated in succession to black oats in a temperate climate

Management of nitrogen fertilization in maize cultivated in succession to black oats in a temperate climate

Effects of nitrogen dosage and urea source on morphological composition and forage accumulation in massai grass

Agronomic evaluation of Herbaspirillum seropedicae strain ZAE94 as an inoculant to improve maize yield in Brazil

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