Vol. 11, Special Issue 8 (2022)

Author(s):
Manjunatha R, Shashidhar Viraktamath, Manjunatha KL and N Sumithramma

Abstract:
Studies on survey and seasonal incidence of mango leafhopper was conducted at Daddikamalapur and MARS, Dharwad during first fortnight of 2013 to second fortnight of 2015. In mango orchard revealed the occurrence of all the three species of leafhoppers namely I. nitidulus, I. clypealis and A. atkinsoni and their dominance was I. nitidulus >A. atkinsoni >I. nagpurensis. Peak incidence was noticed during first fortnight of January 2014 (56.70 leafhoppers/yellow sticky trap) to second fortnight of May 2014 (80.60 leafhoppers/trap) and another peak was during second fortnight of December 2014 (85.40 leafhoppers/trap) to second fortnight of January 2015 (47.40 leafhoppers/trap). Seasonal incidence of leafindhoppers at UAS campus, Dharwad revealed that the incidence of leafhoppers was registered from first fortnight of July 2013 to second fortnight of October 2014. Whereas, first peak of leafhoppers was during second fortnight of February 2014 (36.35 leafhoppers) and second peak was in second fortnight of June 2014 (38.38 leafhoppers) in Alphonso. Similar trend was observed in remaining varieties. The incidence of mango leafhoppers was noticed on alternate host Sapota from first fortnight of April 2014 (56.02 leafhoppers/5 sweeps) to second fortnight of September 2014 (8.04 leafhoppers/5 sweeps). Peak incidence was registered during first fortnight of April 2014 to second fortnight of April 2014 (25.62 leafhoppers/ 5 sweeps). Feeding damage was not noticed on Sapota plants.