Eficiência do fosfato natural para o arroz irrigado em solo do sul do Brasil

Journal of Biotechnology and Biodiversity

View Publication Info
 
 
Field Value
 
Title Eficiência do fosfato natural para o arroz irrigado em solo do sul do Brasil
Efficiency of phosphate rock to southern Brazil lowland rice soil
 
Creator Bortolon, Leandro
Bortolon, Elisandra Solange Oliveira
Gonçalves, Gustavo Kruger
Sousa, Rogério Oliveira de
Schlindwein, Jairo Abdré
 
Subject phosohorus
reduction
uptake
fósforo
redução
absorção
 
Description Com o objetivo de avaliar a eficiência do fosfato natural na cultura do arroz irrigado, foi desenvolvido um experimento onde testou-se: a) fontes de fósforo(P) : 1- Superfosfato triplo (SFT); 2- Fosfato natural (FN); e b) Doses de P: 0, 10, 20, 40 e 80 mg kg-1. Arroz da cultivar EMBRAPA 7 "TAIM", foram cultivadas em vasos durante trinta dias. O pH na solução do solo não diferiu entre as doses na mesma fonte. O P na solução aumentou com o acréscimo das doses de P, porém na primeira coleta não diferiu entre as fontes. Na segunda coleta os teores de P foram similares nas diferentes doses para a mesma fonte, diferindo apenas no SFT na dose de 80 mg kg-1. A produção de matéria seca aumentou conforme a dose de P sendo que a dose de 80 mg kg-1 foi superior nas duas fontes. Os teores de P na solução do solo e na planta, a quantidade acumulada de P e a produção de matéria seca do arroz, aumentaram com o acréscimo das doses de P aplicadas ao solo; o fosfato natural apresentou alta eficiência agronômica a partir de doses equivalentes à 40 mg kg-1 de P.
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.
 
Publisher Universidade Federal do Tocantins - UFT
 
Date 2014-02-04
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Artigo
 
Format application/pdf
application/zip
 
Identifier https://sistemas.uft.edu.br/periodicos/index.php/JBB/article/view/730
10.20873/jbb.uft.cemaf.v5n1.bortolon
 
Source Journal of Biotechnology and Biodiversity; v. 5 n. 1 (2014): Journal of Biotechnology and Biodiversity; 43-49
2179-4804
 
Language por
 
Relation https://sistemas.uft.edu.br/periodicos/index.php/JBB/article/view/730/409
https://sistemas.uft.edu.br/periodicos/index.php/JBB/article/view/730/15468
 
Rights Copyright (c) 2014 Journal of Biotechnology and Biodiversity
 

Contact Us

The PKP Index is an initiative of the Public Knowledge Project.

For PKP Publishing Services please use the PKP|PS contact form.

For support with PKP software we encourage users to consult our wiki for documentation and search our support forums.

For any other correspondence feel free to contact us using the PKP contact form.

Find Us

Twitter

Copyright © 2015-2018 Simon Fraser University Library