02323naa a2200217 a 450000100080000000500110000800800410001902200140006002400380007410000190011224500900013126000090022152016920023065000100192265000130193265000170194565000090196270000170197170000180198877300990200619700372014-03-26       2013    bl uuuu     u00u1 u    #d  a0010-36247 a10.1080/00103624.2013.8294852DOI1 aFAGERIA, N. K.  aPhosphorus nutrition of lowland rice in tropical lowland soil.h[electronic resource]  c2013  aRice is a main food crop for about half of the world?s population, and phosphorus (P) is the main limiting nutrient in rice production in tropical lowlands. A greenhouse experiment was conducted to evaluate P requirements of lowland rice grown on a lowland soil (Inceptisol). Dry matter, grain yield, and yield-attributing characteristics were significantly (P &lt 0.01) influenced by P fertilization. Based on quadratic response, maximum shoot dry weight and grain yield were obtained with the application of 190 mg P kg−1 of soil. Maximum panicle, tiller number, and plant height were obtained with the application of 177 192, and 175 mg P kg−1 of soil, respectively. Mehlich 1?extractable P for maximum grain yield was 15.6 mg kg−1 of soil. Variability in grain yield with plant growth and yield parameters was in the order of tiller &gt shoot dry weight &gt panicle number &gt spikelet sterility &gt plant height &gt grain harvest index &gt panicle length &gt weight of 1000 grains. Phosphorus uptake in shoot and concentration and uptake in grain significantly (P &lt 0.01) increased grain yield. However, variability in grain yield was greater with concentration and uptake of P in the grain. Similarly, P harvest index was also significantly associated with grain yield. Agronomic P-use efficiency, apparent P-recovery efficiency, and P-utilization efficiency decreased quadratically with increasing P rates, whereas physiological P-use efficiency increased quadratically and agrophysiological P-use efficiency decreased linearly with increasing P rates. Agrophysiological and utilization P-use efficiencies had significant positive correlation with grain yield.  aArroz  aFósforo  aOryza sativa  aSolo1 aKNUPP, A. M.1 aMORAES, M. F.  tCommunications in Soil Science and Plant Analysis, New Yorkgv. 44, n. 20, p. 2932-2940, 2013.