Avaliação de Genótipos de Sorgo em Primeiro Corte e Rebrota Para Produção de Silagem

Botelho, P. R. F.; Pires, Daniel Ananias de Assis; Sales, Eleuza Clarete Junqueira de; Júnior, Vicente Ribeiro Rocha; Jayme, Diogo Gonzaga; Reis, Sidnei Tavares dos

doi:10.18512/1980-6477/rbms.v9n3p287-297

Cited by 16 publications

(20 citation statements)

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“…Botelho et al (2010) found higher values of number of tillers per hectare in conditions of regrowth compared with the first cut, but the production was higher for the first cut, showing that this variable alone is not efficient to increase the forage yield. Zago (1992) explains that the percentages of leaves, stem, and panicles have a strict connection with plant height.…”

Section: Resultsmentioning

confidence: 86%

Agronomic evaluation of 32 sorghum cultivars in the Brazilian semi-arid region

et al. 2014

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-The objective of this study was to evaluate agronomic characteristics of 32 sorghum cultivars (Sorghum bicolor (L). Moench) in the Brazilian semi-arid region. The experimental design was set up in randomized blocks with three replications. Treatments were the 32 sorghum cultivars. The evaluated variables were: plant height, stem diameter, tiller density, number of green leaves per tiller, average leaf length, dry matter content, fresh matter production and dry matter production (DMP) in kg/ha, and the percentage of the components panicle, leaf blade and stem. To avoid associative effects due to the presence of positive correlation with DMP, the variables plant height, number of plants per hectare and fresh matter production were excluded for being part of the discriminatory variables of the cluster. Based on the cluster analysis and subjective cutting in 20% dissimilarity, five groups were hierarchically set up. It was not possible to find groups with higher values of panicle and DMP simultaneously; however, group number 5 met significant values for both variables, with mean values of 15,037.63 kg/ha of DMP and 11.36% of panicle, besides 13.65% of leaf. Groups 3, 4 and 5 show high potential for dry matter production, especially group 5. The presence of evident variation among cultivars allows for a selection of more productive and, thus, more suitable cultivars for silage production in semi-arid regions.

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Section: Resultsmentioning

confidence: 86%

Agronomic evaluation of 32 sorghum cultivars in the Brazilian semi-arid region

et al. 2014

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“…This crop stands out as a good forage for the Brazilian semiarid region for being typical of hot climate, with xerophytic characteristics, low demand in soil fertility, easy cultivation and fast establishment and growth, besides a good nutritional value and high forage production (Botelho et al, 2010;Gomes et al, 2006;Santos et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Cultivation of forage sorghum varieties irrigated with saline effluent from fish-farming under semiarid conditions

Guimarães

Simões

Tabosa

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to evaluate the cultivation of forage sorghum subjected to different leaching fractions with saline effluent from fish-farming under semiarid conditions. The experiment was set in a randomized block design, with four blocks, in split plots, composed of four leaching fractions (0; 5; 10 and 15%) and three forage sorghum varieties ('Volumax' , 'F305' and 'Sudão'). Irrigation was performed using saline effluent from fish farming with electrical conductivity of 2.5 dS m -1 . The analyzed variables were: plant height; stem diameter; width, length and number of leaves; fresh and dry matter yield, and relative contents of potassium and sodium in the shoots. Forage sorghum under saline effluent irrigation and leaching fraction of 15% shows a yield increase of 25%, in comparison to sorghum without the leaching fraction. The variety 'Volumax' was more sensitive to salinity than the others, since it showed lower shoot growth and low values of leaf area, fresh matter and dry matter.Cultivo de variedades de sorgo forrageiro irrigado com efluente salino da piscicultura em condições semiáridas R E S U M O O presente trabalho objetivou avaliar o cultivo de variedades de sorgo forrageiro submetido a diferentes frações de lixiviação com efluente salino da piscicultura em condições semiáridas. Foi adotado o delineamento experimental em blocos ao acaso, com quatro blocos, em parcelas subdivididas compostas por quatro frações de lixiviação (0; 5; 10 e 15%) nas parcelas e três variedades de sorgo forrageiro (Volumax, F305 e Sudão) nas subparcelas. A irrigação foi realizada com efluente salino da piscicultura (CE de 2,5 dS m -1 ). As variáveis avaliadas foram altura da planta; diâmetro do colmo; largura, comprimento e número de folhas; produtividade de massa fresca e seca, além de teores de sódio e potássio na parte aérea. Observou-se que o sorgo forrageiro irrigado com efluente salino, com fração de lixiviação de 15% apresentou um aumento percentual de até 25% na produtividade quando comparada à do sorgo sem fração de lixiviação. A variedade Volumax mostrou-se mais sensível à salinidade que as demais em virtude de apresentar o menor crescimento da parte aérea e baixos valores de área foliar e matéria fresca e seca.

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“…Existem vários tipos de panículas: compacta, aberta, semiaberta, semi-compacta, elíptica. Essa característica pode influenciar na produção de massa e grãos (BOTELHO et al, 2010).…”

Section: Discussionunclassified

“…A conservação de forragem na forma de silagem tem sido uma alternativa viável para os produtores, porém a escolha da planta precisa ser ajustada com o padrão de tecnologia da propriedade e as condições edafoclimáticas da região. Nesse contexto, a cultura do sorgo (Sorghum bicolor (L.) Moench) tem sido utilizada nas últimas décadas, no processo de ensilagem, em virtude da tolerância ao déficit hídrico, facilidade de cultivo e possibilidade de se cultivar a rebrota com um manejo adequado, elevado potencial de produção de forragem, bom padrão de fermentação e alto valor nutritivo das silagens produzidas (BOTELHO et al, 2010;ALBUQUERQUE et al, 2011;SOUSA et al, 2015).…”

Section: Introductionunclassified