Survey on the incidence of Asian rice gall midge, Orseolia oryzae (Cecidomyiidae: Diptera) in Cauvery command area
| Autor: | VB Sanathkumar, L Vijay Kumar, Somu G, Shivaray Navi, Mamathad C |
|---|---|
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | International Journal of Chemical Studies. 8:1731-1735 |
| ISSN: | 2321-4902 2349-8528 |
| Popis: | A survey was conducted on the incidence of gall midge in paddy ecosystem in Cuavery and Kabini command area, Karnataka. In Cauvery and Kabini command area mainly Jaya, Jyothi, MTU 1001, BR 2655, Tanu, Gangavathi sona are cultivated in which about 50 % area is covered by Jaya. The crop is infested by gall midge which plays a significant role in limiting the rice production. During the survey along with gall midge other pests like yellow stem borer, hispa case worm, Leaf folder were noticed. Among the three districts surveyed Mandya districts has recorded higher gall midge infestation with per cent silver shoot of 9.03, which was followed by Chamarajanagar (8.70% SS). The lower gall midge infestation was noticed in the Mysore district with per cent silver shoot of 6.95. Due to the gall midge infestation the tiller become sterile and leads to yield loss. Early gall infestation in nursery results in the stunted growth and bushy appearance. Since gall midge being endoparasitic in nature, cultivation of resistant varieties is the most economical and feasible for its control. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|