Loquat diseases By Allah Dad Khan Provincial Coordinator IPM KPK MINFAL

Loquat diseases By Allah Dad Khan Provincial Coordinator IPM KPK MINFAL

1. Loquat Diseases A Lecture To ToT trainees ( FFS) By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Pakistan

2. Shoot/Fruit Blight and Bark Canker ( Phoma glumerata sp.) The canker appear on bud scars, twigs or in crotches. Small circular brown spots appear around a leaf scar or superficial wound. As the canker enlarges the centres become sunken with the surrounding healthy bark. The fungus perpetuates itself on the trees in bark cankers. Control : Remove the cankers and decorticate along with 2 cm of healthy bark. Apply Bordeaux paste on the cut ends and wounds. Spray Bordeaux mixture 2:2: 250 twice at an interval of one month.

3. Collar Rot: It is caused by Phytophthora species. Some are of the view that it is caused by Diplodia natalensis . The fungus produces canker from ground level to point from where scaffolds emerge. The rot girdless the trunk during 2-3 years. Affected trees flower profusely. The foliage become yellowish green. The tree show wilting and ultimately dry up completely. Control: ( i ) Avoid flooding the orchard. (ii) Uproot the infected trees and destroy. (iii) Scrap the infected portion and cut some healthy bark also. Apply Bordeaux paint. Spray the trees with Bordeaux mixture 2:2: 250.

4. Fire Blight Symptoms Fire blight is a very serious bacterial disease that first manifests in trees as a watery substance that drips from cankers on the branches, twigs or trunk. The substance eventually darkens, leaving stains on the branches or trunk. Fire blight can shrivel and blacken fruit, and seriously damage the overall health of the tree. To help combat fire blight, prune away infected branches with sterile equipment, and burn all infected material. Chemical controls are available to help prevent future outbreaks

5. Phytophthora Root Rot Phytophthora root rot is a soil-borne disease that infects the loquat through its root system. This disease develops in the soil during long periods of excessive moisture. Loquat trees located in poorly drained areas are especially susceptible to this disease. Infected loquat trees will display symptoms that include wilting, loss of vigor, dull green or yellow foliage and dieback. Symptoms often appear on a small amount of branches and twigs before overwhelming the tree. Full infection often occurs over several years. Control phytophthora with water management. The loquat's planting area should be well-drained and the tree should never be overwatered. Prune away severely infected areas with sterile shears. Fungicidal sprays are effective on ornamental loquats when used in combination with pruning   Symptoms

6. Verticillium Wilt Verticillium wilt is a soil-borne, fungal pathogen. This fungus can live many years in the soil, even without a host. Verticillium wilt infects the loquat tree through its root system, causing chronic symptoms. These symptoms include foliage yellowing and scorching, growth stunt, heavy seeding, and weakening and dieback of branches and stems. Infected loquat trees may also experience leaf curl, defoliation and vein yellowing. Fungicidal treatments will not control, prevent or cure verticillium wilt. Remove severely infected trees and replace with verticillium wilt-resistant vegetation. Symptoms