Yield and quality of carrot cultivars related to the harvest time

Abstract

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.

Periods of coexistence of weeds with carrot grown with and without black oat straw

“…Carrot root yield may range from 20 to 100 Mg ha -1 depending on the used production system (conventional or organic), irrigation, sowing density and spacing, sowing and harvesting time, and cultivated species (Carvalho et al, 2020). However, despite this high yield potential, weed interference may reduce total root yield by up to 96% (Freitas et al, 2009), besides stimulating the deformation of developing roots, decreasing their quality and hindering mechanical harvesting (Soares et al, 2010).…”