Tropical and Subtropical Agroecosystems

Fernando Silva Araújo
State University of Piauí, Joaquim Nogueira de Oliveira Avenue, s / nº, Corrente-PI, CEP 64980-000.
Brazil

Luiz Fernando Carvalho Leite
Embrapa Mid-North, Teresina (PI), Brazil.
Brazil

Zigomar Menezes de Souza
State University of Campinas, Faculty of Agriculture Engineering, Campinas, São Paulo, Brazil, Zipcode 13083 875.
Brazil

Jose Luiz Rodrigues Torres
Federal Institute of mining triangle
Brazil

Antônio Samuel Henrique Brito Costa
Embrapa Mid-North, Teresina (PI), Brazil.
Brazil

Antônio Hosmylton Carvalho Ferreira
Embrapa Mid-North, Teresina (PI), Brazil.
Brazil