Produtividade e tolerância à queima-das-folhas de diferentes genótipos de cenoura de verão

Carvalho, A. D. F. de; Silva, Giovani O; Pereira, R. B.; Pinheiro, J. B.

doi:10.1590/s0102-053620150000300004

Cited by 3 publications

(5 citation statements)

References 14 publications

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“…Regarding the two open pollination cultivars, Carvalho et al (2015), measuring MRM at 100 DAS, found superior yield of commercial roots from BRS Planalto over Brasília, with values of 25.81 and 16.06 t ha -1 , respectively. Likewise, Carvalho et al (2017), in the evaluation in 20 environments, found an average MRM value of 34.54 t ha -1 for 'Brasília' and 35.95 t ha -1 for BRS Planalto.…”

Section: Resultsmentioning

confidence: 98%

“…There were no differences between the three cultivars for nonmarketable root mass (NRM), showing that although the hybrid HX 4098 had lower TRM than the open-pollinated cultivars, it presented MRM equivalent to BRS Planalto by the lowest NRM. As emphasized by Carvalho et al (2015) and Pereira et al (2015), the heterosis of carrot hybrids is due to the higher proportion of marketable roots, as these tend to have more uniform roots than open pollinated cultivars.…”

Section: Resultsmentioning

confidence: 99%

“…o Brix was superior for cultivar HX4098 (7.80) compared to 'Brasília' (6.93) and 'BRS Planalto ' (6.53). This fact can be attributed to the possible genetic constitution of a hybrid, which probably has germplasm in its genealogy with a high degree of breeding for root quality (Carvalho et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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Yield and quality of carrot cultivars related to the harvest time

2020

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The knowledge about harvest time in carrots is important to determine the moment when the farmer will be able to obtain higher yield and quality of roots. Thus, this work aimed to verify the moment of harvest, aiming to maximize yield and the quality of roots. From November 2018 to March 2019, three cultivars, Brasília, BRS Planalto and HX4098 were evaluated in Brasília-DF in DBC design with three replications, in a split plot scheme, in which the treatments of the subplots were the harvest times at 80, 90, 100, 110 and 120 days after sowing (DAS). The experiment was installed on November 20, 2018, in 1 m2 useful area seedbeds. Sowing was done manually, in transverse grooves, with double spacing rows 10 x 20 cm, and 5 cm spacing between plants. Cultural treatments were those adopted for the carrot culture for the Brazilian Cerrado biome. At harvest, the total mass, non-commercial and commercial roots, number of roots of each class, average diameter and length of commercial roots and °Brix were evaluated. The best harvest time to obtain maximum yield is close to 110 DAS, with a small reduction in °Brix after 90 DAS.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Yield and quality of carrot cultivars related to the harvest time

2020

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“…In carrot primary growth, which occurs in the first 45 days after sowing, root length is highly influenced by the environment (Carvalho et al 2015). In this period, paper mulching promoted the best condition for root elongation, due to the transmission and reflection of most of the solar radiation incident on the leaf and soil (You et al, 2021), while the treatment with plastic mulching had an adverse effect, caused by the absorption of much of the incident radiation from the crop and soil.…”

Section: Discussionmentioning

confidence: 99%

“…Secondary growth, which occurs from 45 days until close to harvest (±100 days for summer carrots), is marked by the expansion of the diameter (Carvalho et al 2015). When applying deficit irrigation depths, smaller root diameters were obtained, as small changes in cell turgor during the cell growth process reflect a decline in cell expansion and growth (Jones, 2010;Taiz et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Irrigation Management and Biodegradable Mulching Impact on Carrot Biometric Characteristics and Yield

et al. 2022

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This study aimed to evaluate the biometric and productive characteristics of carrot (Daucus carota L.) under different irrigation levels and soil covers. Experiments were carried out at the Federal University of Viçosa in 2019 and 2020, to evaluate the effect of five irrigation levels (20, 40, 60, 80, and 100% of the daily irrigation depth) and soil coverings (control, plastic mulching, and paper mulching), on the variables soil moisture (U), actual water consumption (AWC), root length (R) and diameter (D), leaf height (H) and temperature (T), normalized difference vegetation index (NDVI), yield (Y) and dry root biomass (DB). Irrigation management was performed with tensiometers. There was no significant interaction (P < 0.05) between the factors. Irrigation significantly influenced D, H, T, NDVI, Y, and DB, while the soil cover treatment affected R, D, H, NDVI, Y, and DB. The highest yields were found in 100% irrigation (34.89 t ha -1 ) and with paper mulching (30.55 t ha -1 ). The results can guide future adaptations to the carrot production system currently in force in Brazil. As for biometric characteristics, yield, and sustainability in the use of water for irrigation were studied.

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