serious pest of grains. Its identification, life cycle and damage is explained so that everyone can understand it easily.
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Language: en
Added: Apr 02, 2017
Slides: 11 pages
Slide Content
Angoumois G rain Moth S itotroga cerealella ALL PRAISE IS DUE TO ALLAH , THE LORD OF THE WORLDS, THE [ONE WHO] SUSTAINS THE HEAVENS AND EARTHS Made by: Arslan Ahmad University of Agriculture Faisalabad Sub Campus Burewala, Pakistan [email protected]
Known Facts About Pest Distribution is world-wide . Important pest of stored grains. Damage is caused by the larvae only. The larvae feeds on the grain kernels while the adult feeds on nectar, honey, water etc. Attack all types of cereal grains.
Some Cereal Grains Attacked By AGM Wheat Oat Barley Maize Sorghum
Identification Full grown larva is about 5mm long . Body color of larva is white with yellow-brown head . The adult is greyish-yellow, brown or straw-colored moth . Wing expanse of adult moth is 10-12mm . Most characteristic feature of this pest is the presence of the narrow pointed wings fringed with long hairs, prominent along the posterior margin .
Life Cycle Egg Larva Pupa Adult Breeding starts from April – October Mating takes place within 24 hours after emergence as adult and female start laying eggs . The eggs are laid singly or in batches on or near the grain . Eggs are laid within a week after mating. The female adults have longer life span than the males. There are several generations in a year. Eggs are small & white when f reshly laid, later turns reddish 150 eggs are laid (ave.) I. P. = 4 – 8 days in summer Larval Stage last about 3 weeks The larva before pupation Constructs a silken cocoon In a cavity made during feeding H. P. = 6 days (ave.) at 27.5° Ϲ Total Life Cycle 51 Days Adult emerges by pushing a side the seed-coat that c overs the exit Adults again mate after emergence
Damage Maximum damage is caused in monsoon season . The larva soon after emergence bores into the grain and feeds on it’s contents . As it grows, it extends the hole which partly gets filled with pellets of excreta . The larva usually eats 30 – 50% of the grain content , but sometimes entire grain is consumed . After infestation the grains give out an unpleasant smell and present an unhealthy appearance because each grain gets covered by scales shed by the moth. In a heap of grain, upper layer is most severely affected. Larva pupates within the grain