02020naa a2200253 a 450000100080000000500110000800800410001902400510006010000190011124501610013026000090029152011940030065000150149465000090150965000100151865000130152865000170154165000160155865300250157465300190159965300280161870000250164677300950167112126732022-06-06       2007    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1080/001036207013285372DOI1 aFAGERIA, N. K.  aDry-matter and grain yield, nutrient uptake, and phosphorus use-efficiency of lowland rice as influenced by phosphorus fertilization.h[electronic resource]  c2007  aPhosphorus (P) deficiency is one of the most yield-limiting factors in lowland acid soils of Brazil. A field experiment was conducted during two consecutive years to determine dry-matter and grain yield, nutrient uptake, and P-use efficiency of lowland rice (Oryza sativa L.) grown on an acidic Inceptisol. Phosphorus rates used in the experiment were 0, 131, 262, 393, 524, and 655 kg P ha 21 applied as broadcast through termophosphate yoorin. Dry- matter yield of shoot and grain yield were significantly ( P &lt 0.01) and quadratically increased with P fertilization. Concentrations ( content per unit dry- weight leaves) of nitrogen ( N), P, and magnesium ( Mg) were significantly increased in a quadratic fashion with the increasing P rates. However, concentrations of potassium ( K), calcium ( Ca), zinc ( Zn), copper ( Cu), and iron ( Fe) were not influenced significantly with P fertilization, and Mn concentration was significantly decreased with increasing P rates. Phosphorus use efficiencies ( agronomic, physiological, agrophysiological, recovery, and utilization) were decreased with increasing P rates. However, magnitude of decrease varied from efficiency to ? efficiency.  aphosphorus  arice  aArroz  aFósforo  aOryza Sativa  aSolo Ácido  aAgronomic efficiency  aFertilização  aPhysiologial efficiency1 aBARBOSA FILHO, M. P.  tCommunications in Soil Science and Plant Analysisgv. 38, n. 9/10, p. 1289-1297, May 2007.