Open AccessAvaliação fenoprodutiva e teores clorofilianos de rabanete sob fertilização com urina de vaca e cobertura morta
Author(s) -
Francisco De Assis Bezerra,
José Lucínio de Oliveira Freire,
Jandeilson Alves de Arruda,
Thiago Anderson Oliveira de Azevedo,
Loren Aryelly Araújo Dantas
Publication year - 2018
Publication title -
principia/revista principia
Language(s) - English
Resource type - Journals
eISSN - 2447-9187
pISSN - 1517-0306
DOI - 10.18265/1517-03062015v1n42p31-40
Subject(s) - raphanus , mulch , dry matter , agronomy , chlorophyll , horticulture , straw , randomized block design , chemistry , completely randomized design , biology
The radish (Raphanus sativus L.) is a short-cycle vegetable that has a rapid demand for nutrients to grow and produce. Because of the small number of reports on organic fertilization with this crop, this work was conducted in the Plant Production Sector of the Course of Agroecology of the Picuí Campus ,IFPB and aimed to evaluate the attributes of growth, yield and chlorophyll index of radish in response to the application of cow urine, via soil, as an alternative fertilization. The experimental design was organized in randomized blocks, with four replications, in a 6 x 2 factorial arrangement, which corresponded to six concentrations of cow urine (0.00%, 0.25%, 0.50%, 0.75%, 1 , 00% and 1,25% - v / v), applied weekly with and without mulch. The variables analyzed were plant height, number of leaves, leaf area, specific leaf area, leaf area index, Falker a, b and total chlorophyll index, longitudinal and equatorial diameters of tuberous roots, fresh tuberous root mass, Axial root length, total dry mass, percentage of commercial tuberous roots, productivity and dry matter yield. The use of mulch reduced specific leaf area, fresh matter and radish productivity, regardless of the concentration of cow urine applied. The leaf chlorophyll index of radish was higher in the plants without mulching. Longer radishes were obtained on substrates without mulching or 0.51% cow urine. Possibly, due to the production of secondary metabolites (allelochemicals) from the mulch (rice straw), the application of 0.54% cow urine without mulching provided higher radish productivity. The concentration of cow urine of 0.38% provided higher yields of dry matter.