What can you treat with the Chemjet Injector?

The Chemjet® Tree Injector is the cost efficient tool to inject pesticides, fungicides, compounds which boosts the plants natural defiance mechanism, fertilizers and trace elements. The true benefit of injecting the tree lies in utilizing the trees natural circulatory system for transportation of the chemical. The following is a list of diseases that have been successfully managed and treated with Chemjet® Tree Injectors. Ongoing research is being conducted around the world to further this list.

Treating Iron Chlorosis in Trees

Though iron deficiency is more likely, high soil pH also can cause manganese deficiency with similar looking chlorosis. Our Texas soils have a pH usually around 7.8 to 8.3 with high Potassium and Phosphor and this combination acts as a mineral blocker. Texas soil pH tends to be highest where precipitation is the lowest. Injecting a chelated Iron solution with the Chemjet® Tree Injectors is effective for approximately two years.

Wood-boring Insects of Trees

Many insects feed and make their homes in the bark, trunks and branches of shade trees and shrubs in Texas. Insect borers belong to several different insect groups including a variety of beetles, moths and horntail wasps. Most insect borers are attracted to weakened, damaged, dying or dead plants


Since most wood-boring insects are considered secondary invaders, the first line of defense against infestation is to keep plants healthy. Proper care of trees and shrubs discourages many borer pests and helps infested plants survive. Good sap flow from healthy, vigorously growing trees, for example, defends the plant from damage by many borer pests.

Chemical control

It is important to remember that stressed, unhealthy trees can be attacked repeatedly and will need repeated applications of insecticide. Trunk injection products (containing abamectin, acephate, dicrotophos, imidaclaprid and oxydemeton-methyl) are registered for treatment of some borers. These products are reported to work by delivering insecticides into the cambium and phloem tissues where borers feed.

Oak Wilt in Texas

Oak wilt, one of the most destructive tree diseases in the United States, is killing oak trees in central Texas at epidemic proportions. Oak wilt is an infectious disease caused by the fungus Bretiziella fagacearum, which invades and disables the water-conducting system insusceptible trees. All oaks are susceptible to oak wilt to some degree. Red oaks, particularly The Spanish Oak or Texas Red Oaks are extremely susceptible and may play a unique role in the establishment of new oak wilt infections. White oaks, including Post Oak, Bur Oak and Chinkapin oak are resistant to the fungus and rarely die from oak wilt.
Live oaks are intermediate in susceptibility to oak wilt, but are most seriously affected due to their tendency to grow from root sprouts and form vast interconnected root systems that allow movement (or spread) of the fungus between adjacent trees. The successful management of oak wilt depends on correct diagnosis and an understanding of how the pathogen spreads between different oak species.

Sudden Oak Death in California and Oregon

Sudden oak death is the common name of a disease caused by the oomycete plant pathoghen Phytophthora ramorum. The disease kills oak and other species of tree and has had devastating effects on the oak populations in California and Oregon as well as also being present in Europe. Symptoms include bleeding cankers on the tree's trunk and dieback of the foliage, in many cases eventually leading to the death of the tree.

Control of S O D

Treatment with the fungicide propionate (Potassium Phosphite) is very effective in stemming the spread of sudden oak death—a tree disease that has killed thousands of oaks and tanoaks in 14 California coastal counties — for up to 2 years. The phosphonate treatment is considered environmentally friendly. It is applied by drilling very small 11/64” holes in trees and injecting the fungicide into the tree sapwood using the Chemjet® Tree Injectors.

Control of Chestnut Blight

Chestnut canker disease, more commonly referred to as chestnut blight, spreads sporadically, most commonly moving from plant to plant on splashing rain, wind and from animals that pick up the spores as they travel. The infection invades trees through open wounds in the bark. Initial symptoms include the development of cankers, or areas of dying plant tissue, on branches and stems in a distinctive brown hue, often accompanied by orange spore strands. The disease quickly results in the death of all stems and branches. Potassium phosphite Injection using Chemjet® Tree Injectors is strongly recommended as this fungicide and energy nutrient has been shown to stimulate tree vitality and in turn enhance resistance against a wide range of tree fungal and bacterial diseases.