Rice Pest Pheno - Forecasting
Portal
The adult beetle is a small, shiny, bluish black beetle with a spiny body. The females live an average of 20 days and the males for 14 days. They mate 3 or 4 days after emergence.
The eggs are laid singly near the tip of the leaf blade, generally on the ventral surface, and are partially inserted beneath the epidermis. A single female lays an average of 55 eggs. The incubation period under natural field conditions is 4-5 days. Hatched grub slits open the two epidermal layers of the leaf and mine the lamina and feed.
Three larval instars are observed and entire development takes place inside the leaf. Grown up grub pupates in the leaf mine and adults emerge.
Both grub and adult cause damage to rice plant. Grubs are leaf miners, feed on the green tissue from within the leaf that they mine and produce irregular white hollow mine patches. Adults scrape the chlorophyll of the leaf giving the characteristic appearance of white, parallel streaks along the main axis of the leaf.
Remove weeds on bunds and in the field.
If two hispa adults were found on a hill, spray the following insecticides
Quinalphos 25 EC @ 400 ml (or) Profenophos 50 EC @ 400 ml per acre.
