1. Academic Unit of Development Technology, Federal University of Campina Grande, Sumé, Brazil
2. Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande, Brazil
3. Plant Production Department, Federal University of Alagoas, Rio Largo, Brazil
4. Department of Agronomic Engineering, Federal University of Sergipe, São Cristóvão, Brazil
5. Department of Biology, State University of Paraíba, Campina Grande, Brazil
6. Brazilian Agricultural Research Corporation, National Cotton Research Center, Campina Grande, Brazil