Desempenho agronômico de híbridos de milho na região sudeste de Goiás

Araújo, Lucas da Silva; Silva, Luis Gustavo Barroso; Silveira, Pedro Marques da; Rodrigues, Fabrício Ávila; Lima, Milton Luiz da Paz; Cunha, Paulo César Ribeiro da

doi:10.18227/1982-8470ragro.v10i4.3334

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…The lowest value for this variable was found in the hybrids from an F2 population MG 545 PW SALVO (Table 3). Such outcome endorses the study conducted by Araújo et al (2017), who perceived differences in the quantity of grains per row of distinct maize hybrids. These quantitative characteristics of maize ears are defined between the phenological stages V4 and V9.…”

Section: Resultssupporting

confidence: 81%

Segregation of the Rr Biotechnology and Agronomical Variables in Single-Cross, Double-Cross, and F2 Hybrids of Maize (Zea Mays L.)

Salvalaggio

Berkenbrock

Hister

et al. 2020

Int. J. Res. Granthaalayah

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The present work evaluated the segregation of the RR-biotechnology and the agronomic performance of maize hybrids originated from three seed categories: single-cross commercial hybrids, double-cross hybrids, and saved seeds (F2 population). The experiment was set up in the field, within a producing area used for market purposes, in São Miguel do Iguaçu, Paraná, Brazil. The research followed a randomized block design with four repetitions. We investigated the following treatments: saved seeds/F2 population (MG 580 PW, MG 30A37 PW, MG 600 PW, and MG 545 PW), seeds of single-cross commercial hybrids (MG 580 PW, MG 30A37 PW, AS 1777 PRO3, AG 9000 PRO3, and DKB 290 PRO3) and home-bred seeds/double-cross hybrids (DKB 290 PRO3 x MG 30A37 PW, DKB 290 PRO3 x DKB 285 PEO3, DKB 290 PRO3 x DOW 2B587 PW, and DKB 290 PRO3 x MG 600 PW). The study considered agronomical characters, as well as the segregation of the RR-biotechnology. The hybrids MG 580 PW and DKB 290 PRO3 were the most productive ones, yielding 9,244.31 and 9,151.84 kg ha-1, respectively. The groups formed by double-cross and F2-population hybrids had the highest average values of RR-biotechnology segregation (20.5% and 13%, respectively). The group of commercial hybrids proved to be superior to the others in all variables appraised, and they also did not show segregation of the RR-biotechnology. The principal component analysis made it possible to sort the three categories of seeds. In conclusion, despite the high cost, the commercial seeds stood out showing the best cost-benefit for maize crops.

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Section: Resultssupporting

confidence: 81%

Segregation of the Rr Biotechnology and Agronomical Variables in Single-Cross, Double-Cross, and F2 Hybrids of Maize (Zea Mays L.)

Salvalaggio

Berkenbrock

Hister

et al. 2020

Int. J. Res. Granthaalayah

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“…Ear length and number of grains per row showed interaction for the cover x sowing factors, specifically in the fallow, in which both characters were lower for the areas sowed with seed boot ( Figure 5). There is a direct relation between ear length and grain number in the present study, corroborating the data obtained by other authors (Vilela et al, 2012;Araújo et al, 2017). Moreover, Lima et al (2012b) emphasize that the higher number of grains per row results in higher yield for corn crop.…”

Section: /9supporting

confidence: 93%

Performance of cover and corn plants in different mechanical and biological management associations

Spliethoff

Rampim

Pott

2019

Agraria

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Countless cases of the no-tillage system in compacted layers are seen, making the adoption of management practices that improve the soil physical quality necessary. In this context, this study aimed to verify the influence of mechanical and biological management on the morphophysiological characters and yield of the corn crop and dry matter of cover crops cultivated in an Oxisol. The experiment was conducted at FAZESC, Farm School of the State University of the Central West-UNICENTRO, Guarapuava-PR, in an Oxisol with a very clayey texture. The used experimental design was of completely randomized blocks with split-split plots, with the following evaluated factors: with or without scarification in the plots, sowing with double disc or seed boot in the subplots and soil cover crops (black oat succeeded by the mixture composed by black oat, forage turnip, blue lupine, rye and common vetch; turnip succeeded by the consortium black oat + forage turnip; and fallow) in the sub-subplots. Dry matter production of soil covers, as well as morphophysiological attributes and corn crop yield were evaluated. Soil scarification did not affect corn yield, regardless of the used soil cover or furrowing system at sowing. Seeding done with seed boot limited the corn yield when associated to the soil cover with black oat and soil management with scarification. Soil cover has an effect on the stability and yield of the corn crop, with the fallow being the most productive instability. The mixture of toppings and the black oat + forage turnip had a high potential of dry matter production.

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“…Differences in GY among hybrids are due to the genotype × environment interaction and crop conditions (Araújo et al, 2016). Therefore, the genetic potential, adaptation of these high grain yield hybrids to the region and conditions of the study site are factors that affected their productive performances.…”

Section: Resultsmentioning

confidence: 99%

Agronomic performance of maize hybrids under supplemental irrigation depths

Ben

Robaina

Kirchner

et al. 2019

Rev. bras. eng. agríc. ambient.

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The choice of a maize hybrid, considering the technology level and irrigation management, contributes to the improvement of the plant productivity and water use efficiency (WUE). Thus, the objective of this study was to evaluate the effects of irrigation depths on production components, grain yield, technical efficiency, and WUE in maize hybrids. The experiment was conducted in Santiago, RS state, Brazil, in the 2015/2016 and 2016/2017 crop seasons, using a randomized block design in factorial scheme, consisting of five irrigation depths (0, 50, 75, 100 and 125% of crop evapotranspiration - ETc) and four maize hybrids in crop season I (2015/2016), and six maize hybrids in crop season II (2016/2017). The number of ears per plant, number of grains per ear, 100-grain weight, grain yield, and WUE were evaluated. The irrigation depths affected the 100-grain weight, grain yield and WUE in both crop seasons, and the number of grains per ear in crop season I. The irrigation depths increased the productive performance of the maize hybrids from 9.9 to 41% when using irrigation depths of maximum technical efficiency, which varied from 90.1 to 105.4% ETc. The AG9025, P1630 and DKB290 maize hybrids presented the best agronomic performances, with grain yields from 13,609.1 to 16,281.3 kg ha-1.

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Desempenho agronômico de híbridos de milho na região sudeste de Goiás

Cited by 14 publications

References 8 publications

Segregation of the Rr Biotechnology and Agronomical Variables in Single-Cross, Double-Cross, and F2 Hybrids of Maize (Zea Mays L.)

Segregation of the Rr Biotechnology and Agronomical Variables in Single-Cross, Double-Cross, and F2 Hybrids of Maize (Zea Mays L.)

Performance of cover and corn plants in different mechanical and biological management associations

Agronomic performance of maize hybrids under supplemental irrigation depths

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