Distribución vertical del banco de semillas de Euphorbia davidii Subils, en lotes agrícolas de la zona centro de la provincia de Buenos Aires, Argentina

Euphorbia davidii Subils a summer annual weed, that is present in the center of Buenos Aires province, Argentina. Field studies were conducted to determine the seed banks and the vertical distribution of this specie in agricultural lots, in Azul and Olavarría. Two hundred forty soil samples, from 60 randomly distributed points were extracted at four soil depths: 0-5, 5-10, 10-15 and 15-20cm. Extractions were carried out twice a year, in May and September. Samples were processed and seeds separated by wet sieving. Germination and viability were assessed by triphenyltetrazolium test. Were quant...