“…Some trees, such as blackberry (Antunes, 2002;Vizotto, 2008) and Brazilian guava (Andrade et al, 1993), take a relatively short time to produce fruit, which encourages their spread in orchards and gardens. Other trees, such as lychee (Bastos et al, 2006;Martins, 2005;Yamanishi, Fagundes, Machado Filho, & Sacramento, 2005) and mangaba (Anjos, Charchar, Leite, & Silva, 2009;Schmitz, Mota, & Silva Junior, 2009;Machado, Ramos, Caldas, & Vivaldi, 2004), take more time to start producing fruits and are less sought after for orchards. • Plants with thorns, such as fruit of wolf (Corrêa, Abreu, Santos, & Ribeiro, 2000), blackberry (Manica, 2000;Pereira, 2008) and cactus pear (Semedo & Barbosa, 2007;Souza, Gamarra-Rojas, Andrade, & Guerra, 2007), present major difficulties for manual harvesting.…”