mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/dark-headed-stem-borer-adult-moth-is.html
Kamis, 27 September 2007. The adult moth is straw to light brown with silver scales and several black dots at the tip of the fore wing; the hind wing is yellow-white. The scale like pale yellow eggs overlap in the egg mass. The larva has a black head and black connecting thoracic plate, hence its name. On the abdomen, three dorsal and two lateral brown strip is distinct. The pupa is yellow-brown with two distinct bumps at the front of the head. One larva generally tunnels in a single stem.
mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/rice-stem-borers-five-stem-borer.html
Kamis, 27 September 2007. Five stem borer species are important pest of rice in. They are rice striped borer Chilo supressalis. Dark-headed stem borer Chilo polychrysus. Rice stem borer Scirpophaga incertulas. Rice white stem borer Scirpophaga innotata. And pink stem borer Sesamia inferens. Stem borers are widespread in occurrence. They cause significant damage by reducing tiller number even on resistant varieties and are difficult to control with insecticide. When disturb they fly only a few meters.
mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/white-stem-borer-adult-white-stem-borer.html
Kamis, 27 September 2007. The adult white stem borer is similar to the yellow stem borer in appearance. The male and female appear the same. The egg masses are identical to those of the yellow stem borer. Plant hosts. Larvae are reported to have a wide host range (millet, rice, wild rice, Pospolum, Panicum. The egg mass, larva, and pupa of the white stem borer are similar to those of the yellow stem borer. The larvae remain dormant at the base of the plants during dry season.
mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/striped-stem-borer-striped-stem-borer_27.html
Kamis, 27 September 2007. The striped stem borer moth is straw to light brown with silvery scales and a row of black dots at the tip of the fore wing; the hind wing is yellow-white. The eggs are disc-like, pale yellow and overlaps in the egg mass. The larva has a yellow-brown head. It gets its name from three dorsal and two lateral brown stripes along its body. In temperate regions the larvae overwinter in rice straw or rice stubble. The pupa is dark brown. Many larvae may be found in one rice stem.
mankuman.blogspot.com
PEST: Oktober 2007
http://mankuman.blogspot.com/2007_10_01_archive.html
Kamis, 18 Oktober 2007. Insect pest of rice in. Plant wilt and ca. Om called hopperburn. it also transmits grassy stunt and ragged stunt virus. The rice brown planthopper has a high capacity to reproduce. Frequently, farmer misuse. He insect from spray droplets. The brown planthopper is mainly a pest of irrigated wetland rice, but it can. Also become abundant in rainfed wetland environment. It is rare in upland rice. Short winged ( brachypterous. And long-winged ( macropterous. Ur is both sexes. 16 Eggs ...
mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/yellow-stem-borer-male-and-female.html
Kamis, 27 September 2007. The male and female yellow stem borer moths differ in appearance. The male is light brown with numerous small brownish dots, five along the subterminal area and eight or nine near the tip of the fore wing. The female is straw-colored, becoming darker toward the tip, and has a very distinct black spot in the center of each fore wing. The hind wings are pale and straw-colored. The pupae are elongated and yellow-white. The larva feeds only on rice and related wild rices.
mankuman.blogspot.com
PEST: RICE BROWN PLANTHOPPER
http://mankuman.blogspot.com/2007/10/rice-brown-planthopper.html
Kamis, 18 Oktober 2007. Insect pest of rice in. Plant wilt and ca. Om called hopperburn. it also transmits grassy stunt and ragged stunt virus. The rice brown planthopper has a high capacity to reproduce. Frequently, farmer misuse. He insect from spray droplets. The brown planthopper is mainly a pest of irrigated wetland rice, but it can. Also become abundant in rainfed wetland environment. It is rare in upland rice. Short winged ( brachypterous. And long-winged ( macropterous. Ur is both sexes. 16 Eggs ...
mankuman.blogspot.com
PEST
http://mankuman.blogspot.com/2007/09/pink-stem-borer-pink-stem-borer-belongs.html
Kamis, 27 September 2007. Pink stem borer belongs to a family different from that of the other stem borer. It is related to cutworms and armyworms. The adult is robust and tan with dark brown markings. From a central point in the fore wing, a typical radiation of grey-black lines spreads toward in the wings tips, ending in a thin terminal line of dark spot. The hind wings are white. The eggs are laid between the leaf sheath and the stem and are not covered the hair. Langganan: Poskan Komentar (Atom).
mankuman.blogspot.com
PEST: September 2007
http://mankuman.blogspot.com/2007_09_01_archive.html
Kamis, 27 September 2007. Five stem borer species are important pest of rice in. They are rice striped borer Chilo supressalis. Dark-headed stem borer Chilo polychrysus. Rice stem borer Scirpophaga incertulas. Rice white stem borer Scirpophaga innotata. And pink stem borer Sesamia inferens. Stem borers are widespread in occurrence. They cause significant damage by reducing tiller number even on resistant varieties and are difficult to control with insecticide. When disturb they fly only a few meters.
