Seleção de cultivares de sorgo e braquiária em consórcio para produção de grãos e palhada

Silva, Alessandro Guerra da; Neto, Adalbert Horvath; Teixeira, Itamar Rosa; Costa, Kátia Aparecida de Pinho; Braccini, Alessandro Lucca

doi:10.5433/1679-0359.2015v36n5p2951

Cited by 8 publications

(16 citation statements)

References 9 publications

(14 reference statements)

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“…Em determinadas situações, quando se deseja o pastejo ou colheitas adicionais, a soqueira é desejável. Por outro lado, quando o produtor opta por preparar a área antecipadamente para a safra seguinte ou decide deixar a palha para cobertura do solo, a rebrota deve ser eliminada (Silva et al, 2015). Nesse contexto, a dessecação poderia ser feita também com o intuito de eliminar a rebrota, otimizando as operações no campo.…”

Section: Introductionunclassified

Dessecação pré-colheita em sorgo granífero: qualidade fisiológica das sementes e efeito sobre a rebrota

Barros

Pimentel

Freitas

et al. 2019

Agraria

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AGRONOMIA (AGRONOMY) RESUMO: O uso de dessecantes em pré-colheita no sorgo pode tornar essa etapa no campo mais ágil e eficiente. Entretanto, a aplicação de herbicidas sobre a cultura oferece riscos à germinação e ao vigor das sementes. Neste contexto, objetivou-se avaliar o efeito de dessecantes sobre a antecipação da colheita, a qualidade fisiológica das sementes e controle da rebrota em sorgo granífero. O experimento foi conduzido em esquema fatorial (2 x 4) +1, sendo avaliados dois herbicidas glyphosate (Roundup original) e paraquat (Gramoxone 200) aplicados em quatro doses (0,5; 1,0; 2,0 e 4,0 L ha-1 do produto comercial) mais o tratamento controle (sem aplicação) no delineamento blocos casualizados. As características avaliadas foram: antecipação da colheita, primeira contagem de germinação, germinação, teor de água e condutividade elétrica das sementes e controle da rebrota da planta. O paraquat permite a antecipação da colheita em até 14 dias e quando aplicado nas doses de até 2,0 L ha-1 não prejudica a germinação das sementes e, por ser um herbicida de contato, não exerceu controle sobre a rebrota das plantas de sorgo. O glyphosate, por ser um herbicida sistêmico, exerce controle eficiente da rebrota do sorgo e possibilita a antecipação da colheita em até 12 dias.

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Section: Introductionunclassified

Dessecação pré-colheita em sorgo granífero: qualidade fisiológica das sementes e efeito sobre a rebrota

Barros

Pimentel

Freitas

et al. 2019

Agraria

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“…In the higher seeding density (6, 8, and 10 seeds m -2 ), those treatments did not show significant difference relative to monoculture. Thus, the B. ruziziensis growth, after the sorghum crop, when grown in row and inter-row intercropping in succession to soybeans crop, enables to increase the biomass production in intercropping the Cerrado soil, as observed in other researches (Horvath Neto, 2012;Silva et al, 2015).…”

Section: Dry Matter Production In the Intercroppingmentioning

confidence: 50%

“…This may have allowed sorghum plants to develop faster, without interference at the early development stage. Although, the research results are limited with regard to sorghum yield during off-season, the obtained values of grain yield allow to infer the technical feasibility of the B. ruziziensis and grain sorghum intercropping in succession to soybeans in the Brazilian Midwest, as evidenced by Silva et al (2015).…”

Section: Grain Sorghum Cropmentioning

confidence: 99%

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Seeding density of Brachiaria ruziziensis intercropped with grain sorghum and effects on soybean in succession

Borges¹,

Silva²,

Goulart³

et al. 2016

Afr. J. Agric. Res.

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Sorghum is an alternative crop to produce grains in the off-season in Brazilian Cerrado and the intercropping with Brachiaria species enable to produce dry matter on the soil surface for a longer time. However, there is limited information on Brachiaria ruziziensis seed density to be applied to intercropping with sorghum without causing decreases in sorghum grain yield. The objective of the study was to evaluate the seeding density of B. ruziziensis in different intercropped systems with grain sorghum grown after soybean harvest, in off-season cultivation, to produce grains and the effects of straw on the agronomic performance of the soybean crop in succession to intercropping. This study was conducted in the field during the 2014 off-season in Rio Verde, Goiás. The experimental design was complete randomized blocks in a 3×5 factorial arranged with four replications corresponded to intercropping on rows, inter-rows and broadcast sowing with the densities of 2, 4, 6, 8 and 10 viable pure seeds m -2 of B. ruziziensis. Monocultures of sorghum and these forage crop were also evaluated. The results demonstrated the absence of effects of intercropping systems and seeding density on the yield of sorghum grains and on the cultivation of soybean in succession. The intercropping was effective in producing straw on soil surface to Cerrado no-tillage system.

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“…The intercrop of sorghum with grass species is a promising system that allows the production of grains and biomass in the winter (Mateus et al, 2011;Horvathy Neto et al, 2012;Silva et al, 2013;2015). Moreover, this biomass can be used as forage (Horvathy Neto et al, 2014;Silva et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Seeding system and density for winter Urochloa ruziziensis intercropped with sorghum between soybean crops

et al. 2018

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The intercrop of grain sorghum with Urochloa ruziziensis allows the production of grains and biomass in the winter. Thus, the objective of this study was to identify the more adequate seeding system and seed density for Urochloa ruziziensis intercropped with sorghum between soybean crops to obtain high grain and biomass yields with these species and evaluate the performance of the subsequent soybean crop. The experiments were carried out in the winter of 2015 and in the 2015-2016 crop season in Rio Verde GO, and Santa Helena de Goiás GO, Brazil. The treatments consisted of three seeding systems (in-row, inter-row, and broadcast), and five seed densities (2, 4, 6, 8, and 10 viable seeds m-2) of U. ruziziensis intercropped with sorghum, using monocultures of sorghum and U. ruziziensis as controls. The seeding density of 8 viable seeds m-2 of U. ruziziensis using in-row seeding, and up to 10 viable seeds m-2 using inter-row, and broadcast seedings do not decrease sorghum grain yield. Increasing seeding density of U. ruziziensis increases its dry matter yield, and the total dry matter yield when intercropped with sorghum. The intercrop of sorghum with U. ruziziensis increases the soil plant coverage. The dry matter of the intercrop of sorghum with U. ruziziensis does not affect soybean grain yield.

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Seleção de cultivares de sorgo e braquiária em consórcio para produção de grãos e palhada

Cited by 8 publications

References 9 publications

Dessecação pré-colheita em sorgo granífero: qualidade fisiológica das sementes e efeito sobre a rebrota

Dessecação pré-colheita em sorgo granífero: qualidade fisiológica das sementes e efeito sobre a rebrota

Seeding density of Brachiaria ruziziensis intercropped with grain sorghum and effects on soybean in succession

Seeding system and density for winter Urochloa ruziziensis intercropped with sorghum between soybean crops

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