STUDIES ON INFESTATION OF BROWN SOFT SCALE COCCUS HESPERIDIUM LINNAEUS ON DIFFERENT SPECIES OF CYMBIDIUM ORCHID UNDER AGROCLIMATIC CONDITIONS OF UTTARAKHAND
V.C.S.G. College of Horticulture, Bharsar, G.P. Pant University of Agriculture and Technology Bharsar, Pauri Garhwal, Uttarakhand – 246 123
R.M. SRIVASTAVA, A.K. TIWARI AND L.B. YADAV
Brown soft scale Coccus hesperidium was recorded infesting various species of Cymbidium orchid. Four year data,
2006-09 showed that population on Brown soft scale was positively correlated with temperature and moisture. Maximum infestation was observed in the month of May whereas minimum was in December. Cymbidium hookerionum, C. longifolium and C. mastonon species harbored negligible scale insect population and performed well in the agroclimatic condition of Uttarakhand, whereas C. eburneum species showed poor performance due to severe scale infestation.