Desempenho de cultivares de cenoura em sistema orgânico de cultivo em condições de temperaturas elevadas

Abstract

Yield of carrot cultivars in organic farming system at high temperatureCarrot is the fourth most consumed vegetable in Brazil and one of the most consumed one worldwide. Considering the need to adapt genotypes for organic systems, this study aimed to evaluate carrot cultivars under organic cultivation in Petrolina, Pernambuco State, Brazil, under conditions of high temperatures (summer). The experiment was carried out from December 2009 to March 2010, using a randomized block design with twelve cultivars (Alvorada, Brasília, Brazlândia, Carandaí, Danvers, Karine, Kuronan, Marly, Nantes, Shin Kuroda, Suprema and Tropical). The plant height ranged from 49 to 63 cm, cultivar Brasilia presenting the highest plants (63 cm). Total yield of roots ranged from 26.9 to 58.6 t/ ha, cultivars Brasília (58.6 t/ha) and Brazlândia (56.0 t/ha) being the most productive ones, without significant differences between them. Yield of roots ranged from 22.3 to 53.5 t/ha, the highest yield being presented by the cultivar Brasília (53.5 t/ha). Root fresh mass of the highest-yielding cultivars ranged from 66 to 77.6 g. Brasilia, Brazlândia and Kuronan cultivars, due to the best agronomical characteristics, are recommended for planting in organic farming system with high temperatures.

Effects of planting dates on growth and nutrient accumulation of carrots in the brazilian semi-arid

“…Aquino et al (2015) also found that there was no effect of the cultivars on the dry matter contents in the roots. The values found by Resende et al (2016) regarding leaves dry matter content (15.5 g plant -1 in the tops and 31.1 g plant -1 in the roots) was slightly higher than the one found in this experiment, probably due to climatic and soil conditions found in the different study areas.…”

Resposta De Parâmetros Morfológicos De Cultivares De Cenoura No Vale Do Gurgueia, Piauí / Response of Morphological Parametrs of Carrot Cultivars in the Gurgueia Valley, Piauí

“…respectivamente. Os dados decorridos neste trabalho para diâmetro de raízes estão dentro dos padrões estabelecidos pelas empresas de sementes e também com característica exigidas para comercialização que são raízes com aproximadamente 3,0 cm de diâmetro (RESENDE et al, 2016).…”

Effect of planting date on postharvest quality of roots of different carrot cultivars grown in the Brazilian semiarid region

“…The use of summer cultivars and seeds from primary umbels has been the main strategy to enable carrot cultivation in regions where this vegetable was not cultivated in the past (Resende et al, 2016).…”