Standardized Sampling Plan for the Thrips Frankliniella schultzei (Thysanoptera: Thripidae) on Watermelon Crops.
Sampling plans are essential components of integrated pest management programs. The thrips Frankliniella schultzei (Trybom) (Thysanoptera: Thripidae) is an important pest of watermelon crops. Despite the importance of sampling plans and of F. schultzei as a pest of watermelon crops, no research has been previously conducted on this subject for this crop. The objective of this work was to create a standardized sampling plan for F. schultzei in watermelon crops. Over two consecutive years, weekly samplings were performed in commercial watermelon crops. The aim of these assessments was to select the best sampling unit and the best sampling technique for F. schultzei assessment and to determine the number of samples necessary for a standardized sampling plan for this pest. In watermelon crops in the vegetative, flowering, and fruiting stages, the ideal location for sampling F. schultzei was the most apical leaf of the branches. The best sampling technique was a direct count of F. schultzei individuals. The F. schultzei sampling plan involved the evaluation of 69 samples per plot. The execution duration of this sampling plan in 1- to 15-ha plots was <1 h and was inexpensive (<US$ 2 per sampling). This has not been reported for watermelon before.
Departamento de Entomologia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, 36570-900, Viçosa, MG, Brasil ( cleovannat@hotmail.com ; tarcsilva@gmail.com ; breno.gb@outlook.com ; nilsonufv@yahoo.com.br ; picanco@ufv.br ).|Agência de Defesa Agropecuária do Estado do Tocantins (ADAPEC/TO). Quadra 104 Sul Rua SE 1, Plano Diretor Sul, 77020014, Palmas, TO - Brazil.
Cleovan
C
Barbosa Pinto
Universidade Federal do Tocantins (UFT), Caixa Postal 66, Gurupi, Tocantins, Brasil (rsarmento@uft.edu.br; poliana_silvestre@yahoo.com.br; carloshlimma@gmail.com).
Renato
R
Almeida Sarmento
Departamento de Entomologia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, 36570-900, Viçosa, MG, Brasil (cleovannat@hotmail.com; tarcsilva@gmail.com; breno.gb@outlook.com; nilsonufv@yahoo.com.br; picanco@ufv.br).
Tarcísio
T
Visintin da Silva Galdino
Universidade Federal do Tocantins (UFT), Caixa Postal 66, Gurupi, Tocantins, Brasil (rsarmento@uft.edu.br; poliana_silvestre@yahoo.com.br; carloshlimma@gmail.com).
Poliana
P
Silvestre Pereira
Departamento de Entomologia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, 36570-900, Viçosa, MG, Brasil ( cleovannat@hotmail.com ; tarcsilva@gmail.com ; breno.gb@outlook.com ; nilsonufv@yahoo.com.br ; picanco@ufv.br ).|Agência de Defesa Agropecuária do Estado do Tocantins (ADAPEC/TO). Quadra 104 Sul Rua SE 1, Plano Diretor Sul, 77020014, Palmas, TO - Brazil.
Breno
B
Gomes Barbosa
Universidade Federal do Tocantins (UFT), Caixa Postal 66, Gurupi, Tocantins, Brasil (rsarmento@uft.edu.br; poliana_silvestre@yahoo.com.br; carloshlimma@gmail.com).
Carlos
C
Henrique Oliveira Lima
Departamento de Entomologia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, 36570-900, Viçosa, MG, Brasil (cleovannat@hotmail.com; tarcsilva@gmail.com; breno.gb@outlook.com; nilsonufv@yahoo.com.br; picanco@ufv.br).
Nilson
N
Rodrigues da Silva
Departamento de Entomologia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, 36570-900, Viçosa, MG, Brasil (cleovannat@hotmail.com; tarcsilva@gmail.com; breno.gb@outlook.com; nilsonufv@yahoo.com.br; picanco@ufv.br).
Marcelo
M
Coutinho Picanço
D000818:Animals; D001938:Brazil; D029773:Citrullus / Q000254:growth & development; D018556:Crops, Agricultural / Q000254:growth & development; D010571:Pest Control / Q000379:methods*; D011156:Population Density; D061149:Thysanoptera / Q000502:physiology*
Citrullus lanatus; negative binomial; sampling technique; sampling unit