Efficiency of phosphate rock to southern Brazil lowland rice soil

Authors

  • Leandro Bortolon
  • Elisandra Solange Oliveira Bortolon
  • Gustavo Kruger Gonçalves
  • Rogério Oliveira de Sousa
  • Jairo André Schlindwein
  • Leandro Bortolon EMBRAPA - Centro Nacional de Pesquisa em Pesca, Aquicultura e Sistemas Agrícolas https://orcid.org/0000-0002-4460-2447
  • Elisandra Solange Oliveira Bortolon EMBRAPA - Centro Nacional de Pesquisa em Pesca, Aquicultura e Sistemas Agrícolas
  • Gustavo Kruger Gonçalves Universidade Estadual do Rio Grande do Sul https://orcid.org/0000-0001-5769-9113
  • Rogério Oliveira de Sousa Universidade Federal de Pelotas
  • Jairo Abdré Schlindwein Universidade Federal de Rondônia https://orcid.org/0000-0002-4556-5887

DOI:

https://doi.org/10.20873/jbb.uft.cemaf.v5n1.bortolon

Keywords:

phosphorus, reduction, uptake

Abstract

Phosphate rock efficiency to lowland rice was evaluated in a study that we tested: a) phosphorus sources (P): 1- triple superphosphate (TSP); 2-Phosphate rock (PR); and b) phosphorus rates: 0, 10, 20, 40 and 80 mg kg-1. Rice variety EMBRAPA 7 "TAIM", was grown in a pot for thirty days. Soil solution pH values were similar between rates for the same source; however, the PR was superior to TSP in both soil solution sampling. The P concentrations in solution increased according to P rates. P amounts in the second soil solution sampling were similar between rates of the same source, but the differences were observed at P (TST) rate of 80 mg kg-1. Shoot dry matter increased with P rate and the 80 mg kg-1 P rate was superior in both sources. However, the TSP was superior to PR and this tendency was similar with the P in plant tissue and P uptake by plants. P in soil solution, P plant content, P uptake by plants and rice growth increased according to P applied in soil; PR showed high agronomic efficiency at rates over 40 mg kg-1 de P.

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Published

2014-02-04

How to Cite

Bortolon, L., Oliveira Bortolon, E. S., Gonçalves, G. K., de Sousa, R. O., Schlindwein, J. A., Bortolon, L., … Schlindwein, J. A. (2014). Efficiency of phosphate rock to southern Brazil lowland rice soil. Journal of Biotechnology and Biodiversity, 5(1), 43–49. https://doi.org/10.20873/jbb.uft.cemaf.v5n1.bortolon

Issue

Vol. 5 No. 1 (2014): Journal of Biotechnology and Biodiversity

Section

Agrarian Sciences

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