172 FAQs
Pests, Diseases & DisordersWhat is a hyperparasitoid, and why does it complicate mango natural-enemy observations?
A hyperparasitoid develops at the expense of another parasitoid rather than directly providing the same control of the plant-feeding pest. Consequently, not every small wasp emerging from pest-associated material has the same ecological role. Preserve identification information when evaluating biological control. Wasp activity alone cannot reveal whether the pest's primary parasitoids are increasing successfully or being attacked by another trophic level.
Pests, Diseases & DisordersIs fungus growing from a dead mango insect necessarily a disease of the mango tree?
Some fungi infect insects rather than the plant on which those insects were feeding. An insect cadaver with fungal growth can therefore represent a natural-enemy interaction, although later decomposers can also colonize dead insects. Photograph the insect and growth without spreading material through the nursery. Identification is needed before interpreting it as beneficial control, a plant pathogen, or a reason to apply fungicide.
Pests, Diseases & DisordersHow is disease tolerance different from disease resistance in a mango trial?
Resistance limits infection or pathogen development, while tolerance concerns maintaining performance despite a given disease burden. A tree with acceptable yield can still carry substantial infection, so yield alone does not establish resistance. Measure disease and production separately when interpreting a mango trial, and check how its authors define the terms. Neither label establishes freedom from a regulated pathogen.
Pests, Diseases & DisordersWhat does an endophytic lifestyle mean for a fungus isolated from mango?
An endophyte occupies internal plant tissues without producing visible disease at the time observed. This differs from material merely resting on the surface. Mango research has documented anthracnose-associated fungi in apparently healthy tissues, so symptom-free occupancy does not guarantee that an organism is permanently harmless. Ask how internal isolation and identification were established before interpreting an isolate as a beneficial organism or an active disease.
Pests, Diseases & DisordersDoes the name mango anthracnose identify one single Colletotrichum species everywhere?
No. Research has identified multiple Colletotrichum species associated with mango anthracnose, and the species encountered vary among surveyed regions and tissues. A common disease name is not a complete species identification. Keep the laboratory's actual result when comparing research or diagnostic records, and avoid assuming that an old broad species label establishes identical pathogen biology in every mango-growing area.
Pests, Diseases & DisordersShould swollen mango roots be interpreted as beneficial nitrogen-fixing legume nodules?
Mango is not a legume, and unexplained root swellings should not be dismissed as the familiar nitrogen-fixing nodules of beans or peas. Root-knot nematodes are one possible cause of galled roots, but appearance alone does not identify every swelling. Arrange examination of suitable root and soil samples with a diagnostic laboratory rather than treating the growths as proof of either helpful nitrogen fixation or a specific nematode.
Pests, Diseases & DisordersIs black weed-control plastic equivalent to clear plastic for solarizing an unplanted mango nursery bed?
No. Solarization depends on capturing solar heat in moist soil, and clear plastic generally transmits sunlight into the soil more effectively than opaque black material. Weed suppression by blocking light is a different process. Evaluate local conditions and the target organism before relying on solarization, and do not heat an occupied mango root zone as though it were an empty preparation bed.