Period before interference on cassava crop in the presence and absence of liming
Cassava is one of the main plants grown in Brazil and is generally cultivated by small producers as a subsistence crop, in different types of production systems, as it is a rustic plant with good productivity, however, the competition for nutrients with the Weeds is very harmful to the development of the crop, especially in the period that they remain vegetating together. This work aims to determine the period before interference (PAI) in the cassava culture installed in two planting systems.