Economic importance Earias insulana is a major pest of cotton in the Eastern Mediterranean. Damage is caused by the larvae, which cause. Acontia xanthophila Walker, ; Earias chlorion Rambur; Earias frondosana Walker; Earias gossypii Frauenfeld; Earias insulana syn. The symptoms of attack are similar for all Earias spp. Cotton infestation generally starts with shoot boring in the young crop. Earias insulana enters the terminal.
|Country:||Antigua & Barbuda|
|Published (Last):||25 September 2014|
|PDF File Size:||19.3 Mb|
|ePub File Size:||19.21 Mb|
|Price:||Free* [*Free Regsitration Required]|
International Journal of Tropical Agriculture, 5 1: Nasr and Azab b also emphasize the importance of removing infested shoots and suggest that it be done when the egg-masses of Spodoptera littoralis are being collected and destroyed.
Earias insulana – Wikipedia
Journal of Insect Science, 2 1: Earias vittellaspiny bollworm: The benefits of topping are controversial, although Nasr and Azab b claimed that the removal of the topmost few centimeters of the cotton plant at the beginning of the season reduced infestation and encouraged lateral branches, increasing the yield, without affecting the quality of the fibre. Entomologia Experimentalis et Applicata, 16 4: Bulletin of Agricultural Research, 2: Bulletin of eadias Entomological Society of Egypt, No.
With severe tunnelling, the top leaves wilt and the whole apex of the plant droops, hampering further growth.
The spacing and density of cotton plants as factors affecting populations of the bollworms, Earias insulana Boisd. Indian Journal of Entomology, 7: Stam and Elmosa found that parasitoids were relatively unimportant in controlling lepidopterous pests in cotton in Syria, but inzulana the use of pesticides reduced the numbers of predators, resulting in a reduction in seed cotton yields. Control of spiny bollworm Earias insulana Boisd. Prediction of bollworms’ damage in cotton in relation to weather factors.
Noctuidae in the Punjab. Journal of Cotton Research and Development, 7 2: Go to distribution map Egyptian Academy Journal of Biological Sciences 6: TVIS Newsletter, 1 2: However, field tests carried out in the Indian Punjab in to investigate the damage to different cotton varieties caused by several bollworms, including E. Larger bolls, weeks old, may not drop, but insulna prematurely and may be so badly damaged they cannot be harvested.
The principal cotton pests and their economic thresholds in the Kilikien Plain in southern Turkey. Nolidaede eerste vangst in Nederland. Earias vitellaE. The whole apex turns blackish-brown and dies.
Archives of Insect Biochemistry and Physiology, 22 The use of pheromones for mating disruption of cotton bollworms and rice stemborer in developing countries.
There was a problem providing the content you requested
Comparative damage caused by bollworms and yield of seed-cotton during a dry and wet year in Haryana. As the buds and flowers appear they wither and are shed; they usually have a conspicuous hole where the larva has entered. Cotton infestation generally starts with shoot boring in the young crop. Extensive tunnelling results in wilting of the top leaves and the collapse of the apex of the main stem. Use of entomopathogenic nematodes against foliage pests.
Evaluation of some exotic parasites in biocontrol of cotton bollworms in Haryana.
Earias insulana (Egyptian stem borer)
Indian Journal of Agricultural Sciences, 58 4: Some farmers allow livestock to graze cotton during the vegetative stage with the same effect. The Egyptian stemborerEgyptian bollwormspiny bollworm or cotton spotted bollworm Earias insulana is a moth of the family Nolidae. Cultural Control Much of the literature investigating cultural control of bollworms erias at mixed populations such as Pectinophora gossypiella.
Other studies have found that earlier sowings help reduce bollworm infestation Bishara, ; Ilango and Uthamasamy, ; Abdalla, Fundamental and Applied Nematology, 16 5: The larvae feed on okra, cotton and hibiscus, but have also been recorded on rice, sugarcane and corn. Lunar periodicity and flight activity of nocturnal Lepidoptera iinsulana different levels. Ahmad and Ullah suggested that the rains, by lowering the temperature and enhancing relative humidity, benefited B.
Nature and Science Indian Journal of Plant Protection, 9 1: Population density and flight activity of the adult stage of the spiny bollworm, Earias insulana Boisd. Studies on the varietal resistance of okra to jassid and shoot and fruit borer. Cotton varieties that express the Bt toxin controlled inuslana pest in Egypt.
Annals of Agricultural Science, Moshtohor, 28 3: Retrieved from ” https: Being a specialist, the size of its populations is restricted by the availability of various Malvaceae, especially cotton. Shedding of fruiting bodies by bollworms in Asiatic cottons.