Resumo

ANDREANI JUNIOR, Roberto et al. Sementes de Cássia tora L: estudo da germinação visando o controle em áreas cultivadas. Acta Bot. Bras. [online]. 1987, vol.1, n.2, suppl.1, pp. 171-177. ISSN 0102-3306.  http://dx.doi.org/10.1590/S0102-33061987000300017.

The objective of the present research was to study the germination of Cassia tora L. seeds, which is known to be a weed mainly at soybean plantations and other general crops. This work should verify the effect of planting seeds on different depths on seedling emergence, the potential of seed storage related to natural and accelerated aging and the dormancy breaking process, in order to obtain a more rational control of this species. Seeds which were planted 4 and 6 cm deep gave best seedling emergence percentagens. After harvest the percentage seed germination of which about 42%, decreased to 40%, 39% and 30% on storage periods of 90, 180 and 270 days respectively, showing an average of 38% of germination. The best treatment dormancy breaking of there seeds was found to be mechanical scarification

Palavras-chave : Cassia tora L; seeds; germination; weed plant.