STUDY ON AGROBIODIVERSITY AND BIODIVERSITY OF PLANTHOPPERS AND ITS BIO CONTROL IN RICE FIELDS OF KOLLI HILLS–TAMILNADU, INDIA

Kumaresan; N.; Ilangao; K.; Gopinath; L. R.; Bhuvaneswari; R; Archaya. S.

Volume : VI, Issue : IV, April - 2016

STUDY ON AGROBIODIVERSITY AND BIODIVERSITY OF PLANTHOPPERS AND ITS BIO CONTROL IN RICE FIELDS OF KOLLI HILLS–TAMILNADU, INDIA

Kumaresan, N. , Ilangao, K. , Gopinath, L. R. , Bhuvaneswari, R, Archaya. S.

Abstract :

Evolution of science and technology ought variety of changes that increased the birth rate and decreased the death rate lead to rapid increase in population and increased demand in agriculture produce and product. Such increase leads to green revolution with the help of modern eeding technique. However, this triggered variety of issues like pest attack, narrow food basked, increased use of fertilizer and pesticide etc. Among the pest attack plant hoppers forms one of the dominant pests that create devastating effect especially in rice fields. In the present investigation in Kolli hills showed that decreasing agro biodiversity with increasing transformation of landscape along with cultivation pattern. Plant hoppers are found to be increasing trend with increasing transformation especially in rice fields. Plant hopper identification showed 22 species in 16 genera in Kolli Hills in the present study. Estimation plant hoppers at different altitudes of Kolli Hills showed Nilaparvata lugensas dominant in all altitudes with highest number in 250 amsl followed by Sogatella furcifera with highest number in 500 amsl. It was also identified that with increase in altitude planthoppers also in paddy fields also decreased. Among numerous traditional methods available in the study area 17 methods were found to be within top ten preferred in the area. However, Adhathoda vasica leaf along with cow dung slurry preferred by most of the people followed by Vitex negundo leaf extract with butter milk as effective pesticide against planthoppers.