Zart Marcelo, de Macedo Mariana Ferracim, Simões Santos Rando Jael, Doneze Gabriela Souza, Brito Cassia Pereira, de Souza Poletto Rodrigo, Alves Viviane Sandra
Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, IFRS, Ibirubá, Rio Grande do Sul, Brazil.
Instituto Biológico de São Paulo, Campinas, São Paulo, Brazil.
J Nematol. 2021 Feb 25;53. doi: 10.21307/jofnem-2021-020. eCollection 2021.
The performance of nine isolates of and one of on the mealybug (Hemiptera: Pseudococcidae), were evaluated. The most virulent isolates were evaluated for nematode vertical and horizontal dispersal, and for efficiency at concentrations of 0 (control), 25, 50, 75, and 100 infective juveniles (IJs)/cm on adult females of the insect. A compatibility assessment was also carried out with commercial products, registered or in the process of registration, for use in the cassava culture. The isolates that caused the highest mortality rate of were NEPET11 (93.8% ± 4.1) and IBCB-n40 (84.0% ± 8.1), both isolates of , while the isolate NEPET11 was more virulent than IBCB-n40 at all concentrations evaluated. In the dispersal test, the NEPET11 isolate caused mortality in the mealybug at a depth of up to 20 cm and a horizontal displacement of 7.25 cm. In the compatibility test, the NEPET11 isolate exhibited reduced viability due to the products Poquer, Tiguer 100 EC, Actara 250 WG, and Gaucho FS. The insecticide Curyom 550 EC was the only one that reduced infectivity (reduction of 92%) and is the only product classified as moderately toxic, while all the others were classified as compatible based on E%.
评估了9株[未提及的某种生物]分离株和1株[未提及的某种生物]分离株对粉蚧（半翅目：粉蚧科）的防治效果。对毒性最强的分离株进行了线虫垂直和水平扩散评估，以及在浓度为0（对照）、25、50、75和100个感染性幼虫（IJs）/厘米时对该昆虫成年雌虫的防治效果评估。还对用于木薯种植的已注册或正在注册的商业产品进行了兼容性评估。导致[未提及的某种生物]死亡率最高的分离株是NEPET11（93.8%±4.1）和IBCB - n40（84.0%±8.1），二者均为[未提及的某种生物]的分离株，而在所有评估浓度下，分离株NEPET11的毒性均强于IBCB - n40。在扩散试验中，NEPET11分离株在粉蚧中造成的死亡深度可达20厘米，水平位移为7.25厘米。在兼容性试验中，由于Poquer、Tiguer 100 EC、Actara 250 WG和Gaucho FS等产品，NEPET11分离株的活力降低。杀虫剂Curyom 550 EC是唯一降低感染力的产品（降低了92%），且是唯一被归类为中等毒性的产品，而其他所有产品根据E%被归类为兼容产品。
