01853naa a2200229 a 450000100080000000500110000800800410001902400510006010000190011124501320013026000090026252011570027165000100142865000120143865000140145065000170146465000230148165300100150465300210151470000180153577300700155312158232022-06-07       1998    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1080/019041698093655052DOI1 aFILIPPI, M. C.  aRelationship between panicle blast severity and mineral nutrient content of plant tissue in upland rice.h[electronic resource]  c1998  aPanicle blast (Pyricularia grisea) in upland rice causes significant yield losses depending upon the environmental conditions and nutritional status of the plant at the grain-filling stage. Four field experiments were conducted to evaluate the influence of mineral nutrients on panicle blast of four upland rice genotypes on an oxisol. Panicle blast severities of four genotypes were related to nutrient concentrations in panicle tissues. Nitrogen (N), phosphorus (P), and magnesium (Mg) contents in tissue were significantly (P&lt0.01) and positively correlated, whereas potassium (K) and calcium (Ca) were negatively correlated with panicle blast severity. While the relationship between tissue N concentration and disease severity was quadratic, it was linear for K concentration. The correlation between tissue contents of N and P were positive and highly significant (r=0.75 P&lt0.001). Micronutrient tissue concentrations were not significantly correlated to panicle blast severities except for zinc (Zn). The low panicle blast severities of improved cultivar Guarani were associated with high K and Zn and low N, P, and Mg tissue concentrations.  aArroz  aBrusone  aNutriente  aOryza Sativa  aPyricularia Grisea  aBlast  aMineral nutrient1 aPRABHU, A. S.  tJournal of Plant Nutritiongv. 21, n. 8, p. 1577-1587, Nov. 1998.