Please use this identifier to cite or link to this item:
Type: Artigo
Title: Phosphorus Uptake And Use Efficiency Of Different Cotton Cultivars In Savannah Soil (acrisol)
Title Alternative: Eficiência De Absorção E Utilização De Fósforo Por Cultivares De Algodão Em Um Solo De Cerrado (latossolo Vermelho Amarelo)
Author: Marcante N.C.
Muroaka T.
Bruno I.P.
Camacho M.A.
Abstract: Low soil phosphorus (P) is a limiting factor for plant growth in the Brazilian savannah, where P diffuses slowly and has a high fixation rate in soil (as Al-P and Fe-P). In this study, we investigated the variation in P uptake by different cotton cultivars grown in savannah soil. We conducted a greenhouse experiment using a fully factorial 2 x 17 randomized design with two P treatments (low P = 20 mg kg-1 and high P = 120 mg kg-1) and 17 cotton cultivars. The plants were potted in Acrisol soil labeled with radioisotope 32P. There was genetic variation in the P use efficiency among the cotton cultivars. The P treatments significantly influenced the dry weight of shoots (DWS), P accumulation, the specific activity of 32P, and the L-value (both the standardized and L-values discounted the P present in the cottonseed). Hierarchical clustering analysis classified the cotton cultivars into distinct, internally homogeneous clusters. Our results suggest that cotton cultivars could be selected to maximize P absorption efficiency in conditions of low plant-available P. The cultivars FMT 523, FM 910 and CNPA GO 2043 were the most responsive to P fertilization, while Barbadense 01, FM 966LL, IPR Jataí, BRS Aroeira and BRS Buriti were most efficient at absorbing plant-available P. © 2016, Eduem - Editora da Universidade Estadual de Maringa. All rights reserved.
Subject: 32p Activity
Brazilian Cerrado
G. Barbadense
G. Hirsutum
Editor: Eduem - Editora da Universidade Estadual de Maringa
Rights: fechado
Identifier DOI: 10.4025/actasciagron.v38i2.26551
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
2-s2.0-84963823323.pdf1.56 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.