Produtividade e qualidade da silagem de milho e sorgo em função da época de semeadura

Pinho, Renzo Garcia Von; Vasconcelos, Ramon Correia de; Borges, I.; Resende, Adauton Vilela de

doi:10.1590/s0006-87052007000200007

Cited by 30 publications

(25 citation statements)

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“…For Volumax, values between 31.9 and 21% DM are reported by Ribeiro et al (2007) and Von Pinho, Vasconcelos, Borges, and Resende (2007), respectively, both lower than the values observed in this study for the same material. In turn, Machado et al (2014) evaluated the chemical composition of the silages of sorghum hybrids BRS 610, BR 700 and BRS 655 at milky, pasty and dough maturity stages and reported DM content of silages ranging from 22.86 to 41.27%, with 26.75% for BRS610 and 27.17% for BRS655.…”

Section: Resultscontrasting

confidence: 78%

<b>Agronomic traits and nutritional value of forage sorghum genotypes

Lima

Pires

Moura

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (> 44 ton ha -1 ) and dry matter (> 17 ton ha -1 ), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (> 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean value of 34.83%. Genotypes 12F38019, 12F37016, 12F39005, 12F39019, 12F37007, 12F37014, 12F39014 and BRS 655 showed the best values of dry matter digestibility (64.31 to 74.20%) and crude protein content (8.33 to 10.28%). Among them, 12F139014 exhibited the lowest lignin content (3.32%), suggesting less effect of this fraction on digestibility. Genotype 12F39014 is the most suitable for cultivation, as it presented the best nutritional value and good dry matter production in the four municipalities. ) nos quatro municípios. Os genótipos 12F38019, 12F40019, 12F37005, 12F37043 e Volumax floresceram em três das quatro cidades no prazo de 75 a 90 dias. Os genótipos 12F38006, 12F40006 e 12F37016 foram superiores quanto à altura (> 2 m). Quanto ao teor de matéria seca, proteína bruta e fibra em detergente neutro variaram de 37,15 a 50,13; 5,51 a 10,28 e 43,57 a 65,69%, respectivamente. Os genótipos não diferiram quanto aos teores de fibra em detergente ácido com média de 34,83%. Os genótipos 12F38019, 12F37016, 12F39005, 12F39019, 12F37007, 12F37014, 12F39014 e BRS 655 apresentaram os melhores valores de digestibilidade da matéria seca (64,31 a 74,20%) e teor de proteína bruta (8,33 a 10,28%). Dentre eles o 12F139014 apresentou o menor valor de lignina (3,32%), sugerindo menor efeito desta fração sobre a digestibilidade. O genótipo 12F39014 é mais indicado para cultivo, pois apresentou o melhor valor nutritivo e boa produção de matéria seca nos quatro municípios.Palavras-chave: composição bromatológica, híbridos, produtividade.

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Section: Resultscontrasting

confidence: 78%

<b>Agronomic traits and nutritional value of forage sorghum genotypes

Lima

Pires

Moura

et al. 2017

Acta Sci. Anim. Sci.

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“…Pinho et al (2007), ao trabalhar com diferentes híbridos de sorgo e de milho, verificaram esta mesma variação. Da mesma forma, Ramalho (1999) constatou decréscimo médio diário de 1,0 cm na altura da planta de milho, por dia de atraso na semeadura, a partir de 15 de outubro.…”

Section: Resultsunclassified

Elementos meteorológicos sobre características morfológicas e produtivas do milho em diferentes épocas de semeadura

Caron¹,

Oliveira²,

Elli³

et al. 2017

Científica

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ResumoO presente trabalho teve por objetivo avaliar a influência dos elementos meteorológicos sobre as características morfológicas e produtivas do milho em diferentes épocas de semeadura. O delineamento experimental utilizado foi o de blocos completos casualizados, em esquema fatorial 2x6, com dois híbridos de milho (Dekalb 240 e Dow AgroSciences 2A106), e seis épocas de semeadura (15-09-2013, 30-09, 15-10, 30-10, 16-11 e 03-12-2013), com três repetições. Avaliaram-se a estatura da planta, o diâmetro de espiga, o comprimento de espiga, o número de fileiras por espiga, o número de grãos por fileira, o diâmetro do sabugo, a massa de mil grãos e a produtividade. Foi realizada a análise de variância e o teste de Tukey para os fatores épocas de semeadura e híbridos. Realizaram-se ainda a correlação de Pearson e o procedimento de seleção de variáveis Stepwise de modelagem de regressão. As características morfológicas e produtivas dos híbridos de milho são influenciadas pelos elementos meteorológicos nas diferentes épocas de semeadura. De maneira geral, tanto o híbrido D240 como o 2A106 apresentam melhores resultados em relação às variáveis analisadas, nas semeaduras realizadas em 15-09 e 30-09. Semeaduras tardias (16-11 e 03-12) afetam negativamente o desempenho dos caracteres produtivos e morfológicos dos híbridos. Entre os elementos meteorológicos estudados, a temperatura mínima apresenta a maior contribuição para os valores de produtividade. Palavras-chave adicionais: delineamento experimental; variáveis meteorológicas; Zea mays. AbstractThis study aimed to evaluate the influence of meteorological parameters on morphological and productive characteristics of corn in different sowing dates. The experimental design was a randomized complete block in a factorial 2x6, with two corn hybrids (Dekalb 240 and Dow AgroSciences 2A106), and six sowing dates (09/15/2013, 30/09, 15/10, 30/10, 16/11 e 03/12, 2013), with three replications. We evaluated the plant height, ear diameter, ear length, number of row per ear, number of kernels per row, diameter of the cob, thousand grain weight and productivity. It performed the analysis of variance and the Tukey test for the factors sowing dates and hybrids. Was held still the Pearson correlation and the stepwise variable selection procedure of regression modeling. Morphological and productive characteristics of corn hybrids are influenced by meteorological elements in different sowing dates. Overall, both the hybrid D240 as 2A106 show better results versus the variables in spreading performed in 15/09 and 30/09. Late sowing (16/11 and 03/12) adversely affect the performance of the productive and morphological characters of hybrids. Among the weather elements studied, the minimum temperature has the highest contribution to the productivity values.

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“…Crude protein values were within the appropriate conditions for corn silage with good quality, which is considered to be 75-86 g/kg DM (Von Pinho et al, 2007). A lower concentration (P<0.05) of aflatoxins was observed in silages from groups 3 and 4, possibly due to less use of organic fertilizer (Table 1) concerning groups 1 and 2, as well as the better environmental conditions (location) during the season of corn crop growing (Figure 1).…”

Section: Resultsmentioning

confidence: 99%

Production technology and quality of corn silage for feeding dairy cattle in Southern Brazil

Silva

Jobim

Poppi³

et al. 2015

R. Bras. Zootec.

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-The objective of this study was to evaluate the production practices and use of corn silage in dairy farms in Southern Brazil, and to evaluate their impact on the nutritional quality and occurrence of mycotoxins. The data were collected by application of questionnaires among the producers, and by analysis of silage samples. The variables were subjected to factorial analysis of data reduction through the principal components method, thus obtaining 84.12% of the variance associated with the location, corn hybrid, crop production management, and inoculant used, characterizing the farms into four distinct groups. In farms from Paraná, the silage production technologies were more associated with implantation and crop management processes, and investment in equipment related to ensilage/silo feed-out was less frequent. Farms of Rio Grande do Sul showed high adoption of outsourced services, self-propelled machines, bunker silos, double-sided plastic film, and inoculant to control aerobic deterioration, and the silages showed higher levels of propionic acid (7.95 g/kg DM), and lower concentrations of aflatoxins (7.7 ppb) and total mycotoxins (26.58 ppb). The farms evaluated in Southern Brazil have good production efficiency and corn silages with excellent quality, regardless of their production characteristics.

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Produtividade e qualidade da silagem de milho e sorgo em função da época de semeadura

Cited by 30 publications

References 4 publications

<b>Agronomic traits and nutritional value of forage sorghum genotypes

<b>Agronomic traits and nutritional value of forage sorghum genotypes

Elementos meteorológicos sobre características morfológicas e produtivas do milho em diferentes épocas de semeadura

Production technology and quality of corn silage for feeding dairy cattle in Southern Brazil

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