Diferentes formas de semeadura e espaçamentos influenciando a produtividade de plantas de cenoura

Abstract

Carrot (Daucus carota L.) is a vegetable from the Kashmir region of Afghanistan. Its cultivation has established itself as one of the main olerícolas of Brazil for being a root very consumed in the national market. The objective of the study was to evaluate direct seeding (seed mixed with soil, seeds in pits and seeds placed continuously in the grooves) and spacing between plants (7.5 cm and 10 cm). The factors under study were arranged in a 3 x 2 factorial design in a randomized complete block design, with six treatments and four replications. Growth (plant height and leaf number) were evaluated up to 40 days after DAE and yield emergence (fresh leaf weight, marketable root, non- marketable root, marketable and non-marketable root diameter and length). The highest height (16 cm) and greater number of leaves per plants occurred at 40 DAE. The highest fresh leaf mass (3.58 t ha-1) and marketable root length (8.91 cm) were obtained in the cultivated plants with spacing of 7.5 cm. The highest marketable root diameters were 29.83 mm in plants grown with 7.5 cm spacing and propagated with seeds mixed with soil and 29.62 mm in plants propagated with the seeds placed directly in the pits and cultivated with spacing of 10.0 cm. The highest fresh mass of marketable root was from plants grown with 7.5 cm spacing was 11.59 t ha-1 with propagation with the seeds placed in continuous form in the grooves. It was concluded that the carrot plants presented different values in response to the propagation form and the spacings between plants. In order to obtain higher yields of marketable roots, carrot cultivation should be done at a spacing of 7.5 cm and the seed placed continuously in the sowing grooves.