Franciane Diniz Cogo

Tamanho ótimo de parcela para experimentos com rabanetes

Optimal plot size for experiments with radish The establishment of optimum plot size, in any culture, is one of the ways to increase experimental precision and maximize the information obtained in an experiment. The aim of this study was to determine the optimum size of plots for experiments with radish for the variables mass and root diameter. A test of uniformity was conducted with the planting of radish carried out in lines spaced at 15 cm to 5 cm between plants. The basic unit was defined as a linear segment of three consecutive plants. After 30 days of planting, mass (g) and diameter (mm) of radishes were evaluated. We simulated 35 sizes of plots, estimating mean and coefficient of variation for each size of plot and, using different nonlinear models, we determined the optimum size of plot for assays with radish. It was observed that the methods of modified maximum curvature and targeted linear and quadratic response models estimated different sizes of plot; therefore, in experiments with radish culture, plots with 21 to 63 plants (0.1575 to 0.4745 m²) per plot are recommended.

Pós-graduação em ciência do solo na região amazônica: uma possível realidade

The present study aimed to verify the existence of graduate programs dealing with the theme of Soil Science and related fields, as well as the profile of professors in these programs in the Amazon region of Brazil, in order to facilitate the future development of research in Soil Science. In this region 13 Graduate Programs were found, with 39 subjects offered adhering to the theme of Soil Science, taught by 36 professors, thereby indicating that there are qualified professors for the opening of a Graduate Program in Soil Science. To achieve this objective, policies of incentives and funding designed to strengthen research groups which focus on the development of regional Soil Science will contribute to the reduction of disparities, the generation of research of regional importance, the training of human resources of high quality, and the fixation of doctors in the region.