01930naa a2200253 a 450000100080000000500110000800800410001902400510006010000190011124501540013026000090028452011440029365000120143765000130144965000140146265000110147665000230148765000190151065000090152965300120153865300060155070000250155677300950158112165222022-06-02       2008    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1080/001036208019254222DOI1 aFAGERIA, N. K.  aInfluence of pH on productivity, nutrient use efficiency by dry bean, and soil phosphorus availability in a no-tillage system.h[electronic resource]  c2008  aLow pH is one of the most yield-limiting factors for crop production in Cerrado soils. The objective of this study was to determine influence of soil pH on grain yield and its components, and use of nutrients by dry bean in a no-tillage system in an Oxisol (Typic Haplorthox) of the Cerrado region of Brazil. Five field experiments were conducted for three consecutive years. The pH levels were low (5.3), medium (6.4), and high (6.8), created by applying lime at the rates of 0, 12, and 24 Mg ha21. Grain yield and its components were significantly influenced by soil pH. Adequate pH for grain yield and its components was 6.4. Maximum variation in grain yield was measured by shoot dry weight, and minimum variation was due to 100-grain weight. Nutrient utilization efficiency was in the order of magnesium (Mg) . phosphorus (P) . calcium (Ca) . potassium (K) . nitrogen (N) . copper (Cu) . manganese (Mn) . zinc (Zn) . iron (Fe). Soil extractable P increased linearly with increasing pH in the range of 5.3 to 7.3. These results show that adequate soil pH is an important soil acidity index in improving bean yield in Brazilian Oxisols.  aFeijão  aFósforo  aNutriente  aOxisol  aPhaseolus Vulgaris  aPlantio Direto  aSolo  aMehlich  aP1 aBARBOSA FILHO, M. P.  tCommunications in Soil Science and Plant Analysisgv. 39, n. 7/8, p. 1016-1025, Apr. 2008.