EFFECT OF CROPPING SPACES ON RADISH | Spatial arrangements between rows x radish plants

English. Given the importance of culture and the need for phytotechnical knowledge about the spatial arrangement of plants. The objective of the present work was to evaluate the productive parameters of the radish culture when submitted to different spatial arrangements between plants and rows. For this, the hybrid cultivar Red Pearl was used as a test in a randomized block experimental design, arranged in a 4 x 6 factorial scheme, with four replications. The factors comprise the combination of crop spacing between “rows” and “plants”. The factor levels correspond to the distances between rows of: 8, 16, 24 and 32 cm; and plants of: 4, 6, 8, 10, 12 and 14 cm. Root yield, average root mass, longitudinal and transverse diameters and non-commercial roots were determined. The data were submitted to analysis of variance and, when significant, to linear regression analysis with the aid of Software R. The results showed that there is no interaction between the spacing factors for the analyzed parameters, and the spacing between rows and plants influences the independently evaluated attributes. Both treatment factors, when increased, provide less mass and greater root diameters. Key words: Density, Raphanus sativus, Yield.

Portuguese. Given the importance of this crop and the need for phytotechnical knowledge about the plant spatial arrangement. The objective of this study was to evaluate the productive parameters of the radish culture when submitted to different spatial arrangements between plants and rows. To achieve this aim, the hybrid cultivar Red Pearl was used as a test in a randomized block experimental design, in a 4 x 6 factorial scheme, with four replications. The factors comprise the combination of crop spacing between “rows” and “plants”. The factor levels correspond to the distances between rows: 8, 16, 24, and 32 cm; and between plants: 4, 6, 8, 10, 12, and 14 cm. Root yield, average root mass, longitudinal and transverse diameters, and non-commercial roots were determined. The data obtained were tabulated to obtain the averages, which were submitted to the Shapiro-Wilk residual normality test, at 5% significance, followed by the analysis of variance. When the residual was normal and the response variable was significant, the data was analyzed using linear regression and the appropriate polynomial model was adjusted to present the results. Statistical analyzes were carried out using the R Software. The results show that there was no interaction between the spacing factors for the analyzed parameters, and the spacing between rows and plants influenced the attributes evaluated independently. The spatial arrangements with lower plant densities provided greater root mass and diameter. The importance of new studies involving fixing the spacing between rows and varying the spacing between plants is suggested to better understand the effect of new spatial arrangements on the productive parameters of the radish crop.