Stalk Borer

Mei 01, 2020 Posting Komentar

Symptoms of damage to stems and cobs. Common stalk borer caterpillars are distinctive and easier to identify than the adults.

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Journal of the Entomological Society of Southern Africa 48 1113-119.

Stalk borer. Stalk borers cannot be effectively controlled with insecticides. It is most commonly found inside the stalk of giant ragweed but is of some importance as a pest of tomatoes corn and other plants. However stalk borers are often key insect pests of sorghum in other areas of the world.

Stalk borer larvae are cream to light brown with a dark purple saddle on the forward half of the body. The hind wings are dull brownish-gray. Most body segments have conspicuous round.

The African maize stalk borer also attacks sorghum. Noctuidae feeding in whorl tissue. The eggs are approximately 05mm long and are a pink-brown colour in a sculpted globular shape.

Larvae have dark streaks on either side of their heads. The farmer will use an insecticide intended for control of stalk borer and broadcast it. There is a faint whitish line across the wing near the outer edge.

The front wings are typically gray-brown in color with a few clusters of small white spots and span approximately 1 to 14 inches. The colour varies from white at the time of laying to orange with a black hue at the time of hatching which occurs four to nine days after laying. Adult common stalk borer are small brown moths.

Stalk borer Busseola fusca is the most important insect pest to most cereal crops eg maize in Africa especially in KenyaIt belongs to the Noctuidae family of moths which includes the cutworms and armyworms. Corn earworm is the larva of a moth known as Helicoverpa zeaThe larvae often have green yellow or black colors. Symptoms of maize stalk borer Busseola fusca damage on leaves.

The maize stalk or stem borer is a widespread pest found throughout tropical and sub-tropical areas and is one of the major pests of maize a major crop in Afghanistan. Other seedling feeders Billbug wireworm cutworm see wireworm. Once the farmer has determined that there is in fact a bad infestation of stalk borer in his maize crop usually over 10 of plants he will need to determine a plan of action.

Stalk Borer Identification and Habitat. The adults are dark reddish-brown moths that have a wingspan of about 25 to 40mm. Larvae are about 12 inch long when they leave grass and will reach nearly 2 inches at full development before fall.

They have white antennae and 5 or 6 spots that are white in colour. The maize stalk borer feeds mainly on. Common stalk borer larva.

The stalk borer Papaipema nebris Guenée adult is a dull grayish-brown moth that commonly has several white or silver spots in two rows across the front wings. Larvae of stalk borer species resemble each other in appearance and have similar biologies. Stalk borers rootworms and armyworms are all common corn pests.

As the name indicates the larva of the stalk borer bores into the stalkstem of the host plant and feeds within the plant. The African maize stalk borer larva or in the Latin binomial classification system is known as Busseola fusca and is indigenous to Sub-Saharan Africa. Stalk borer larvae can be as long as 32mm and are slender.

A fully-grown larva is about 25 mm long with a brown head and thorax and white- to yellow-colored body Color Plate 20. The effect of different maize genotypes on the maize stalk-borer Busseola fusca Fuller Lepidoptera. There are three main species of stalk borers which attack maize.

Caterpillars have solid orange head capsules that have a single black stripe. Key aspects of stalk borer control. Cutting or mowing tall weedy areas around vegetable gardens may also help control the pest.

The common stalk borer is a slender purple and white striped caterpillar found tunneling inside the stems of a wide variety of plants. Maize stalk borers are common pests throughout sub-Saharan Africa. The eggs have a flat oval shape and measure approximately 116 mm in length and 075 mm in width.

Most farmers face economic problems while the stalk borer pest infests their maize field. As larvae grow the purple becomes dilute and faded. A characteristic window panes B shot holes where tissue has been eaten away and D dead heart.

The larva or caterpillar stage in the life causes major damage to maize and sorghum crops throughout the region and in particular South Africa. Chilo partellus Swinhoe This species is most important at altitudes below 1500 meters above sea level. The spotted stem borer also attacks sorghum bulrush millet sugarcane and rice and the African pink stem borer also attacks finger millet sugarcane and rice.

In older plants the upper part of the stem usually dies as. Life cycle and appearance of sugarcane stalk borer. Screening and breeding for resistance to Busseola fusca.

The primary method of control is by chemical application. Pest ID Key Characteristics Pest ID RelatedConfused Species. All earworm larvae have black stripes which run down the length of the larva.

Several species share the same habitat and may cause similar looking injury Other borers. In young plants the shoot can be killed causing a dead heart. C galleries filled with frass E cobs showing frass and F deposits and empty grains.

Control of Stalk borer. Egg-laying begins in the evening and. Stalk borer head Early stage stalk borer Late stage stalk borer.

The destruction of the plants may also kill the stalk borer. Upper part of maize plant died as a result of stalk borer damage. Tomato plants that die should be pulled and destroyed.

Rice Stalk Borer Moth Moth Stalking Rice