01951naa a2200229 a 450000100080000000500110000800800410001902400410006010000180010124501450011926000090026452012510027365000080152465300120153265300210154465300160156570000160158170000180159770000230161570000210163877300620165921185732024-02-06       2019    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1002/ps.53612DOI1 aALVARENGA, R.  aTolerance to nymphs and adults of Mahanarva spectabilis (HemipterabCercopidae) by forage plants in fertilized soils.h[electronic resource]  c2019  aBACKGROUND -Several factors may degrade pastures, in particular, inadequate nutrient application and spittlebug attacks. Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae), one of the species that occur in Brazil, is a limiting pest in forage production. This study analyzes the influence of fertilization with the macronutrients nitrogen, phosphorus and potassium (NPK) on the survival of M. spectabilis nymphs, and the effects of damage by nymphs and adults on the production, quality and regrowth capacity of the forages Brachiaria ruziziensis, Pennisetum purpureum and Digitaria sp. RESULTS-Fertilization of the forages differentially affected damage due to spittlebug herbivory. Attacks by nymphs and adults decreased chlorophyll content, plant regrowth and forage quality, and increased injury, regardless of fertilization. The availability of nutrients in the soil not only decreased fiber content, but also increased crude protein, chlorophyll content and regrowth, even when pest infested. Soil fertilization increased the capacity of forage plants to lessen, albeit not eliminate, the effects of injury by M. spectabilis. CONCLUSION-Forages in fertilized soil are more tolerant to attacks by M. spectabilis nymphs and adults.  aNpk  aPasture  aPlant resistance  aSpittlebugs1 aAUAD, A. M.1 aMORAES, J. C.1 aSILVA, S. E. B. DA1 aRODRIGUES, B. S.  tPest Management Sciencegv. 75, n. 8, p. 2242-2250, 2019.