Toxicity and Efficacy of Chlorantraniliprole on Pieris rapae (Linnaeus) (Lepidoptera: Pieridae) on Cabbage

Abstract

Toxicity of chlorantraniliprole was assayed against young (first and second instars) and older larvae (third and fourth instars) of cabbage Pieris rapae (Lepidoptera: Pieridae) on cabbage (Brassicae oleracea), and persistence of field-aged leaf residue of chlorantraniliprole was assayed with 5-old-day larvae of P. rapae on cabbage. Efficacies of chlorantraniliprole and other newer insecticides to P. rapae were tested under field conditions for two seasons in Hubei province in China. The LC 50 value of chlorantraniliprole for early and later P. rapae larvae were 7.92 and 11.34 mg/L by contact toxicity, respectively. The LC 50 value of chlorantraniliprole for early and later P. rapae larvae were 0.95 and 4.32 mg/L through ingestion, respectively. The toxicity of field-aged leaf residues of chlorantraniliprole (0-, 3-, 5-, 7-, 10-, 14-, 21-, 25-, and 28-day-old residues) declined gradually under the field conditions. Almost all larvae died on day 5 after feeding on the leaves with 0-21-day residue, and the mortalities were as high as 83.3% and 72.5% for the 21-and 25-day-old leaf residues. Chlorantraniliprole application suppressed P. rapae larvae below the economic threshold for 21-28 days. The field efficacy trials show that chlorantraniliprole at 52 mg a.i /L rate was effective against P. rapae larvae on cabbage, providing marketable cabbage with three applications per season. In addition, chlorantraniliprole was as effective as indoxacarb and spinosad and significantly more effective than emamectin benzoate.

Seed treatment for managing fall armyworm as a defoliator and cutworm on maize: plant protection, residuality, and the insect life history

“…The value of diamide seed treatments against lepidopteran and coleopteran insects has been shown for cyantraniliprole against Agrotis ipsilon and Mythimna unipuncta (Noctuidae) in maize 34,57 and chlorantraniliprole against Lissorhoptrus oryzophilus (Curculionidae) and Diatraea saccharalis (Crambidae) in rice 28,35,58 . In addition, consistent with our results, seed treatments using anthranilic diamide insecticides were efficacious against Delia platura (Diptera: Anthomyiidae) and Ostrinia nubilalis (Lepidoptera: Crambidae) in the snap bean, 59 and these compounds were selectively toxic to several other insect‐pest species 60–66 . The residual efficacy obtained here against FAW ( c .…”

“…wileyonlinelibrary.com/journal/ps efficacious against Delia platura (Diptera: Anthomyiidae) and Ostrinia nubilalis (Lepidoptera: Crambidae) in the snap bean, 59 and these compounds were selectively toxic to several other insect-pest species. [60][61][62][63][64][65][66] The residual efficacy obtained here against FAW (c. 14 days after plant emergence) was similar to the one against black cutworm, 34 and else the seed treatment was efficacious mainly in the early growth stages of rice and maize. 28,35,57,58 The route of insecticide application by the seed is generally safer for the environment and the operator, 67 but there are instances of side effects of systemic insecticides to beneficial zoophytophagous organisms.…”

Avian Diversity and its Associated Threats in Gharo Creek, District Thatta, Sindh, Pakistan

“…Muthukrishnan et al (2013) reported that spinetoram at 45 and 54 g a.i./ha significantly reduced Spodoptera litura larval population in tomato. Chlorantraniliprole 52 mg a.i /L under field conditions was reported as effective as indoxacarb and spinosad furthermore significantly effective than emamectin benzoate in managing Pieris rapae giving marketable yield with three spray application (Su et al, 2017). Our results showed that insecticides viz., chlorpyriphos, deltamethrin, flubendiamide and lambda-cyhalothrin were less effective in controlling the larval DBM and CB population in cabbage.…”

Effect of Chromium Picolinate, Alone or in Combination with Vitamin C or Formic Acid on Growth, Carcass Traits, Immune and Blood Parameters of Broilers under Heat Stress

“…Muthukrishnan et al (2013) reported that spinetoram at 45 and 54 g a.i./ha significantly reduced Spodoptera litura larval population in tomato. Chlorantraniliprole 52 mg a.i /L under field conditions was reported as effective as indoxacarb and spinosad furthermore significantly effective than emamectin benzoate in managing Pieris rapae giving marketable yield with three spray application (Su et al, 2017). Our results showed that insecticides viz., chlorpyriphos, deltamethrin, flubendiamide and lambda-cyhalothrin were less effective in controlling the larval DBM and CB population in cabbage.…”