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dc.titlePhosphorus Uptake And Use Efficiency Of Different Cotton Cultivars In Savannah Soil (acrisol)en
dc.title.alternativeEficiência De Absorção E Utilização De Fósforo Por Cultivares De Algodão Em Um Solo De Cerrado (latossolo Vermelho Amarelo)pt_BR
dc.contributor.authorMarcante N.C.pt_BR
dc.contributor.authorMuroaka T.pt_BR
dc.contributor.authorBruno I.P.pt_BR
dc.contributor.authorCamacho M.A.pt_BR de São Paulo, Avenida Centenário, 303, Piracicaba, São Paulo, Brazilpt_BR de Agronomia do Paraná, Londrina, Paraná, Brazilpt_BR Estadual o Mato Grosso do Sul, Aquidauana, Mato Grosso do Sul, Brazilpt_BR
dc.subject32p Activityen
dc.subjectBrazilian Cerradoen
dc.subjectG. Barbadenseen
dc.subjectG. Hirsutumen
dc.description.abstractLow 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.en
dc.relation.ispartofActa Scientiarum - Agronomypt_BR
dc.publisherEduem - Editora da Universidade Estadual de Maringapt_BR
dc.identifier.citationActa Scientiarum - Agronomy. Eduem - Editora Da Universidade Estadual De Maringa, v. 38, n. 2, p. 239 - 247, 2016.pt_BR
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