Produtividade de cultivares e populações de cenoura em sistema orgânico de cultivo

Abstract

Carrot is the fourth most consumed vegetable in Brazil and one of the most consumed worldwide. Considering the importance of the selection of carrot genotypes, depending on the region and cropping system, we evaluated the behavior of cultivars and populations of carrot under organic cropping system, under the climatic conditions of the Submiddle São Francisco Valley, Pernambuco state, Brazil, during the period of mild temperatures (June to September 2008). The experiment was carried out in randomized blocks design and three replications evaluating 13 cultivars (Brasília, Alvorada, Karine, Brazlândia, Nantes, Suprema, Redonda de Nice, Nancy, Kuronan, Esplanada, Danvers, Tropical, Nova Kuroda) and three populations (Alvorada POP, Brasília POP and Esplanada POP). Plant height ranged from 48.0 to 64.1 cm, with an emphasis for Brasilia (64.1 cm). The total root yield ranged from 65.2 to 98.9 t ha -1 being greater for Brasília POP (98.9 t ha -1), followed by Brasília (96.3 t ha -1) and Danvers (94.7 t ha -1). The yield of roots ranged from 0.0 to 84.5 t ha -1, highlighting the genotypes Brasília POP (84.5 t ha -1), Brasilia (81.7 t ha -1) and Danvers (78.1 t ha -1). The cv. Esplanada excelled with higher fresh root weight (123.2 g root -1), followed by cv. Danvers (122.8 g root -1) and genotype Esplanada POP (119.1 g root -1) the former and the latter presenting no higher marketable yields.