Indian Journal of Plant Protection
  • Year: 2010
  • Volume: 38
  • Issue: 1

Studies on Compatibility of Certain Insecticides with Chlorothalonil Against Pod Borer, Die-back and Fruit Rot in Chilli

  • Author:
  • Ch Raja Goud1, S R Koteswara Rao2, S J Rahman3, R D Prasad4
  • Total Page Count: 6
  • Page Number: 47 to 52

1Department of Entomology, Andhra Pradesh Horticultural University, College of Horticulture, Mojerla, Andhra Pradesh, India.

2Department of Entomology, College of Agriculture, ANGRAU, Rajendranagar, Hyderabad - 500 030, Andhra Pradesh, India.

3All India Coordinated Research Project on Biological Control of Crop Pests & Weeds, Rajendranagar, Hyderabad - 500 030, India.

4Department of Pathology, Directorate of Oilseeds Research, Rajendranagar, Hyderabad - 500 030, India.

Abstract

A comprehensive study was carried on compatibility among selected entomopathogenic fungi, insecticides and fungicides in chilli from 2006–09 at Directorate of Oil Seeds Research (DOR), Hyderabad. The effect of test insecticides viz., indoxacarb (110.34 ppm), spinosad (99.83 ppm), novaluron (383.30 ppm) and cartap hydrochloride (224.32 ppm) in combination with chlorothalonil (11.85 ppm) on the mortality of H. armigera larvae at their respective LC50 values revealed that all the combinations showed slight synergistic effect. When the indoxacarb 110.34 ppm (LC50) and novaluron 383.30 ppm (LC50) combined with chlorothalonil (1500, 2000, 2500 and 3500 ppm) resulted into synergism against third instar larvae of H. armigera. Spinosad 99.83 ppm (LC50) showed synergistic effect when combined with chlorothalonil (1000, 1500, 2000, 2500 and 3000 ppm), while cartap hydrochloride 224.32 ppm was recorded synergistic when combined with chlorothalonil (1500, 2000, 2500 and 3000 ppm) against H. armigera. Similarly, when chlorothalonil 11.85 ppm (LC50) was combined with indoxacarb (75, 112.5,150, 187.5 and 225 ppm), spinosad (90, 135, 180ppm), novaluron (50, 75, 100ppm) and cartap hydrochloride (250, 375, 500, 625 and 750 ppm) antagonism existed against Colletotrichum capsici spore germination.

Keywords

Compatibility, insecticides, chlorothalonil, Helicoverpa armigera, Colletotrichum capsici