Stalk Borer Damage

Januari 31, 2020 Posting Komentar

Stalk borer can cause damage to all plants parts and are identifiable by three white lines running down the body. There are three main species of stalk borers which attack maize.

Knowledge Bank Neem Sprays Against African Stalk Borer In Maize

In young plants the shoot can be killed causing a dead heart.

Stalk borer damage. Maize stalk borers are common pests throughout sub-Saharan Africa. 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. Stalk borers Diatraea spp are important pests of maize Zea mays L in the Neotropical region.

Symptoms and damage The caterpillars form tunnels inside the stem causing failure to grow and loss of weight. The African maize stalk borer also attacks sorghum. Stalk borers tunnel into corn stalks above the soil or climb directly into the whorl resulting in tattered leaves.

When these tunnels are big and circular they can cause the crop to break. On older plants V4-V8 the leaves will usually discolor wilt and die if tunneling is between them and the growing point. Plant sorghum early because borers are typically more abundant in late-planted sorghum.

As their name suggest the. Borers in Ethiopia can be estimated between 20 - 50 3. HOW DOES THE CATERPILLAR GET TO THE CROP.

Giant ragweed grasses vegetables fruits flowers and more. In total 199 larvae and 54 pupae were found infesting 319 624 of 511 plants sampled. This is referred to as shotgun damage.

Injury by borers increases sorghum susceptibility to stalk rot diseases and lodging. In mature plants the tops tend to weaken or die sometimes breaking off. Symptoms of Common Stalk Borer.

As the name indicates the larva of the stalk borer bores into the stalkstem of the host plant and feeds within the plant. The worms make some channels that weaken the stem till it breaks. The hosts of the common stalk borer include.

A total of 20 maize plants damaged by the maize stalk borer were obtained from a small scale field in Manningdale Bulawayo in Zimbabwe. The maize plants were taken to the laboratory where they were sundried to reduce the moisture content. Symptoms of maize stalk borer Busseola fusca damage on leaves.

The general rule is as long as the stem of the plant is large enough to give shelter and soft enough for the larvae to burrow into then it is a possible host. The damage of the borers depends on the level of soil fertility. The severity and nature of stem borer damage depends upon the borer species the plant growth stage the number of larvae feeding on the plant and the plants reaction to the borer feeding.

Feeding by borer larvae on sorghum and maize. Every year they destroy a great deal of the maize crop. Upper part of maize plant died as a result of stalk borer damage.

The most prominent sign to look for is holes on the leaves in perfect formation. Plants that are 3 to 5 weeks old are at risk of attack by the stalkborer caterpillar. The objective of this research was to identify the Diatraea species and assess the injury they cause and their effect on yield of maize at Tabasco Mexico.

Symptoms of damage to stems and cobs. 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. Chilo partellus Swinhoe This species is most important at altitudes below 1500 meters above sea level.

It has been a known problem for over 150 years often damaging wheat or corn crops and is listed by the United States to. Damage Back to Top Sugarcane borer sometimes is a serious pest of sugarcane. A characteristic window panes B shot holes where tissue has been eaten away and D dead heart.

A key to stalk borers associated with corn in southern states is presented by Dekle 1976. The maize stalk borers normally damages the young leaves first then the stems. Nodes of the stem showing insect damage were cut and the surface swabbed using 70 ethanol.

C galleries filled with frass E cobs showing frass and F deposits and empty grains. A farmer can pick up evidence on the maize from as early as three weeks. Species analyses showed 976 were Diatraea.

Any weed control method that helps eliminate grasses will reduce the number of potential stalk borer egg-laying sites reducing the probability of stalk borer damage the next yearControl of grassy weeds is important to keep stalk borer problems from increasing year to year. In older plants the upper part of the stem usually dies as. Click to see full answer Besides how do you control a stalk borer.

The stalk borer is common in North America east of the Rocky Mountains and tends to eat its way into plant stems and feed from inside the plant. They damage more plants in poor soils than in fertile soils. This publication also includes pictures of the adults.

In northern Texas regions shredding stalks very close to the ground or plowing and disking stubble destroys overwintering larvae of the southwestern corn borer by exposing them to cold temperatures. How do you look for Stalk borer infestations. Larvae bore into the sugarcane stalks.

Feeding by stalk borer can cause severe damage to the foliage and frass can be noted on the plastic. Young plants VE-V3 may be killed by tunneling below the growing point. Control Of Stalk Borers In Maize Crops Introduction Maize stalkborers are serious insect pests in Kenya.

Fruits are directly affected and heavy leaf stripping causes fruits to.

Stalk Borer