Suppression of joint predators (Pardosa pseudoannulata and Verania lineata) against Nilaparvata lugens in conditions exposed to MIPC insecticide

Abstract

MIPC is one of the insecticides widely used by farmers to control brown planthopper or BPH (Nilaparvata lugens) in Padang City, Indonesia. Excessive use of insecticides can cause BPH to become resistant, followed by the death of natural enemies. This study aimed to determine the suppression of joint predators (Pardosa pseudoannulata and Verania lineata) against Nilaparvata lugens under MIPC Insecticide Exposure Conditions. This study used a Completely Randomized Design (CRD) factorial with two factors and five replications. The first factor was the dose of MIPC insecticide (0.75 g/l, 1.5 g/l, 2.25 g/l, and without application) and the second factor was the time of application (During BPH infestation and joint predators, before BPH infestation and joint predators, after WBC infestation and before joint predator infestation). The parameter observed were predation, body weight, and mortality. The results showed no interaction between dose and time of application on joint predator predation. Increasing the MIPC dose decreased the predation. Joint predators could suppress BPH populations of 40.6-43.6 individuals (78-81%) per day, but MIPC application and the presence of joint predators together reduced their predation rates. It is better to apply MIPC insecticide before or after the presence of joint predators to avoid negative impacts on joint predators.

Does competition between Pardosa pseudoannulata and Menochilus sexmaculatus reduce the predation rate on brown planthopper?

“…Pengendalian WBC menggunakan pestisida sintetis tidak direkomendasikan karena dapat berdampak kepada emisi gas CO2 yang menyebabkan tanaman menjadi lebih rentan terhadap serangga herbivora (Tudi et al, 2021), meningkatkan resistensi hama (Syahdia dan Syahrawati, 2020) serta berdampak pula terhadap manusia (Yuantari et al, 2015) dan lingkungan (Jamin dan Erlangga, 2016;Benu et al, 2020). Untuk menghindari dampak negatif tersebut, dianjurkan untuk mendahulukan pengendalian hayati dengan menggunakan musuh alami, seperti jamur entomopatogen (Hendra et al, 2022a;Hendra et al, 2022b;Trizelia et al, 2023a;Trizelia et al, 2023b), parasitoid (Haryati et al, 2015Minarni et al, 2018;Abdilah & Susilo, 2020), dan predator (Syahrawati et al, 2015;Nasral et al, 2020;Syahrawati et al, 2021a;Syahrawati et al, 2021b;Siregar et al, 2023;Utari et al, 2023).…”

Ability of commercial Beauveria bassiana to suppress the brown planthopper attack by inducing resistance into different rice variety

“…Intensive and excessive application of insecticides has encouraged the emergence of BPH resistance (Datta and Banik 2021;Iamba and Dono 2021;Utari et al 2023). Various environmentally friendly controls have been recommended to reduce the BPH population, such as ecological engineering (Horgan et al 2016) and the use of natural enemies such as predators (Syahrawati et al 2015;Nasral et al 2020;Syahrawati et al 2021a;Syahrawati et al 2021b;Siregar et al 2023;Utari et al 2023), parasitoids (Minarni et al 2018;Abdilah and Susilo 2020), and insect pathogens, such as Beauveria bassiana (Hendra et al 2022;Kurniawati et al 2021;Mascarin and Jaronski 2016;Trizelia et al 2023).…”

Virulence of Five Isolates of The Entomopathogenic Fungus, Metarhizium anisopliae, Against Brown Planthopper (Nilaparvata lugens)

“…For this reason, it is necessary to find alternative controls that can reduce the negative impact of insecticides. Integrated Pest Control Technology (IPM) is considered an appropriate and potential technology to BPH, such as exploiting natural enemies as like as predators (Siregar et al, 2023;Utari et al, 2023;Syahrawati et al, 2021a;Syahrawati et al, 2021b;Nasral et al, 2020;Syahrawati et al, 2015), parasitoid (Haryati et al, 2015;Minarni et al, 2018;Abdilah & Susilo, 2020), and entomopathogenic fungus (Trizelia et al, 2023;Hendra et al, 2022a;Hendra et al, 2022b), including Metarhizium anisopliae.…”