Browsing by Author "Girisha, R.C."
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Item Seasonal abundance and varietal reaction of coconut perianth mite, Aceria guerreronis Keifer in Dharwad area(2009) Girisha, R.C.; Nandihalli, B.S.Studies on seasonal abundance and varietal reaction of eriophyid mite was carried out during 2004-2005 in Dharwad area. Results on seasonal abundance indicated that the mite population occurred through out the year with variation during different seasons of the year. The mite population was high during April and May 2005. It started declining with the onset of rain during first fortnight of July 2005. By February 2005, the population started increasing when atmospheric temperature also started increasing. Damaged nuts were in the category of grade 3 and most of the coconut palms possessed more than 54 per cent damaged nuts. Results on varietal reaction of eriophyid mite indicated that Gangabondam recorded least number of mite population (28.96) and also recorded least damage grade, lowest percentage of damaged nuts with highest percentage of healthy nuts.