Produtividade de massa e dessecação de forrageiras perenes para integração lavoura-pecuária

Ceccon, G.; Concenço, Germani

doi:10.1590/s0100-83582014000200009

Cited by 10 publications

(8 citation statements)

References 13 publications

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“…Piatã using glyphosate. Ceccon and Concenço (2014) also verified that U. ruziziensis is easily controlled in desiccation management. Figure 3 shows the total dry matter, leaf dry matter, stem dry matter, dead material dry matter, leaf to stem ratio, and forage height at 80 DAS at the first cut of forages.…”

Section: Resultsmentioning

confidence: 55%

SUPPRESSION OF Urochloa brizantha AND U. ruziziensis BY GLYPHOSATE UNDERDOSES

et al. 2019

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Intercropping of Urochloa species with corn is an alternative to enable the no-tillage system, besides influencing weed community. Therefore, the investigation of underdoses of the herbicide glyphosate to manage grasses in intercropping systems, avoid grain yield losses, and make feasible intercropping in agricultural areas is important. This study aimed to evaluate glyphosate underdoses in the suppression of Urochloa brizantha cv. Marandu and Urochloa ruziziensis and weed control. Two tests were conducted under field conditions in a randomized block design with four replications and eight treatments consisting of increasing glyphosate doses (0, 54, 108, 270, 378, 540, 756, and 1.080 g a.e. ha−1). All treatments received a dose of 1.200 g a.i. ha−1 of atrazine. Evaluations of phytointoxication of brachiaria plants were carried out at 7, 14, 21, and 28 days after application. Moreover, total dry matter, leaf dry matter, stem dry matter, leaf to stem ratio, and canopy height of brachiaria plants and density and dry matter production of weed community were evaluated at 80 and 125 days after sowing. Glyphosate underdoses lower than 238 and 105 g a.e. ha−1 have potential to be investigated aiming at the management of U. brizantha cv. Marandu and U. ruziziensis, respectively.

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Section: Resultsmentioning

confidence: 55%

SUPPRESSION OF Urochloa brizantha AND U. ruziziensis BY GLYPHOSATE UNDERDOSES

et al. 2019

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“…The susceptibility reaction to glyphosate may be more pronounced in some forage plants depending on the environmental conditions. Massai grass was susceptible to glyphosate herbicide in a favorable rainfall condition (Machado and Assis, 2010;Machado et al, 2012;Ceccon and Concenço, 2014), but it was tolerant to it in a water deficit condition, after the application of the herbicide; this was observed with 10 other genotypes (Machado et al, 2009).…”

Section: Resultsmentioning

confidence: 94%

“…Perennial forage plants are controlled with the use of systemic herbicides (Costa et al, 2013), such as glyphosate and sulfosate; the herbicide dose and the time required for control are variable among forage species and weeds (Carvalho et al, 2011;Silva et al, 2013, Ceccon andConcenço, 2014). The desiccation interval, which is the period between herbicide application and sowing of the new crop, ranges from 7 to 21 days, and the glyphosate dose ranges from 0.72 to 1.44 kg a.e.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Perennial Tropical Forage Plants to Glyphosate Herbicide in Integrated Crop-Livestock Farming Systems

et al. 2018

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The purpose of this study was to evaluate forage plant susceptibility in Urochloa ssp. and Megathyrsus maximus with two glyphosate herbicide doses, to increase the efficiency of integrated crop-livestock farming systems. A randomized block design was adopted, in a split-plot arrangement, with six replications. In the main plots, the following treatments were established: Urochloa ruziziensis, U. decumbens, U. brizantha cvs. Xaraés, BRS Piatã and BRS Paiaguás, Megathyrsus maximus cvs. Aruana and BRS Tamani; in the subplots, there were doses of glyphosate herbicide; 0.72 and 1.44 kg a.e. ha-1. The estimated control percentage was consisted of a grading scale from zero (fully living tiller) to 100 (fully dead tillers), assigned 7; 14; 21 and 28 days after herbicide application. The 0.72 kg a.e. ha-1 glyphosate dose was not effective for forage control, but it was possible to identify the most susceptible genotypes, such as U. ruziziensis and BRS Paiaguás. The 1.44 kg a.e. ha-1 dose was satisfactory in controlling (³80%) the grasses U. ruziziensis, U. brizantha cv. BRS Paiaguás and M. maximum cv. Aruana at 17, 18 and 18 days of desiccation intervals, respectively. In conclusion, the susceptibility of forage plants to herbicide glyphosate varies among species and cultivars. U. ruziziensis, BRS Paiaguás and Aruana grasses are desiccated with reduced herbicide doses and short desiccation intervals, and can contribute to the diversification of the forage used in integrated crop-livestock farming systems.

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“…Otherwise, this biomass may be desiccated in advanced time, since this forage species is easily desiccated compared other Brachiaria spp. for the implementation of soybean crop (Ceccon and Concenço, 2014).…”

Section: Dry Matter Production In the Intercroppingmentioning

confidence: 99%

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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Produtividade de massa e dessecação de forrageiras perenes para integração lavoura-pecuária

Cited by 10 publications

References 13 publications

SUPPRESSION OF Urochloa brizantha AND U. ruziziensis BY GLYPHOSATE UNDERDOSES

SUPPRESSION OF Urochloa brizantha AND U. ruziziensis BY GLYPHOSATE UNDERDOSES

Susceptibility of Perennial Tropical Forage Plants to Glyphosate Herbicide in Integrated Crop-Livestock Farming Systems

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

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