SciELO - Scientific Electronic Library Online

vol.59 issue4Nitrogen 15 abundance in protein fractions of beans fertilized with (15NH4)2SO4More adequate probability distributions to represent the saturated soil hydraulic conductivity author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Scientia Agricola

On-line version ISSN 1678-992X


FERNANDES, Cristiano  and  MURAOKA, Takashi. Phosphorus absorption by of corn hybrids grown in savana soils. Sci. agric. (Piracicaba, Braz.) [online]. 2002, vol.59, n.4, pp.781-787. ISSN 1678-992X.

In the past years the savana region has been one of the main agricultural expansion areas, however their soils present high limitation for plant growth due their high acidity, low natural fertility, and low phosphorus availability. The objective of this work was to compare 30 of the main recommended maize (Zea mays L.) hybrids for the cerrado region in relation to their ability to absorb poorly-available soil phosphorus through the 32P isotopic dilution technique, using a Typic Dystrarox cultivated for 20 years and another under natural vegetation. Differences in absorption ability were observed among hybrids, seven classified as efficient, sixteen mildly efficient and seven inefficient, for the case of soil cultivated for 20 years. The plant growth and phosphorus concentration in the natural soil was lower due to its low fertility.

Keywords : Zea mays; phosphorus efficiency; soil fertility; isotopic dilution; nutritional efficiency.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License