Phosphorus split application on irrigated cotton

Most regions where cotton is cultivated in Brazil present low soil fertility, especially concerning the available phosphorus (P). This study aimed to evaluate the phosphorus split application on irrigated cotton, for reaching a higher phosphate fertilization efficiency, in comparison to the traditio...

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Main Authors: Leonardo Angelo de Aquino, Paulo Geraldo Berger, Júlio César Lima Neves, Tricia Costa Lima, Rosiane Filomena Batista Almeida de Aquino
Format: Article
Language:English
Published: Universidade Federal de Goiás 2012-03-01
Series:Pesquisa Agropecuária Tropical
Subjects:
Online Access:https://www.revistas.ufg.br/pat/article/view/13152
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spelling doaj-264547e3ccd743d799d35e1f3381a9f12020-11-25T00:56:09ZengUniversidade Federal de Goiás Pesquisa Agropecuária Tropical1983-40632012-03-014211810.1590/S1983-40632012000100001Phosphorus split application on irrigated cottonLeonardo Angelo de Aquino0Paulo Geraldo Berger1Júlio César Lima Neves2Tricia Costa Lima3Rosiane Filomena Batista Almeida de Aquino4Universidade Federal de Viçosa, Instituto de Ciências Agrárias, Rio Paranaíba, MG, Brasil.Universidade Federal de Viçosa, Departamento de Fitotecnia, Viçosa, MG, Brasil.Universidade Federal de Viçosa, Departamento de Solos, Viçosa, MG, Brasil.Universidade Federal de Viçosa, Departamento de Fitotecnia, Viçosa, MG, Brasil.Universidade Federal de Viçosa, Instituto de Ciências Agrárias, Rio Paranaíba, MG, Brasil.Most regions where cotton is cultivated in Brazil present low soil fertility, especially concerning the available phosphorus (P). This study aimed to evaluate the phosphorus split application on irrigated cotton, for reaching a higher phosphate fertilization efficiency, in comparison to the traditional application at sowing. The experiment was conducted in Quartzarenic Neosol with 22 mg dm-3 of P (medium availability), in the north region of the Minas Gerais State, Brazil. The design used was randomized blocks, in a (4x3) + 3 factorial scheme, with three replications. Treatments consisted of P2O5 doses (0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 180 kg ha-1) and three split applications (80% and 20%; 60% and 40%; 40% and 60% of the P dose applied respectively at sowing and at 35 days after emergence (DAE)), plus the application of 0 kg ha-1, 60 kg ha-1, and 120 kg ha-1 of P2O5 at sowing. The P source was the granulated triple superphosphate, and the P content in the shoots increased according to the doses applied. Nutrient contents in the index leaf, except for P, were not influenced by P levels and split applications. The P content in the index leaf and the number of cotton bolls per plant increased with the increment of P doses, but were not affected by the phosphate fertilizer split application. The application of 40% of the P dose at sowing and the remaining amount split at 35 DAE decreased the cotton boll yield, with no significant effect for the other split applications.https://www.revistas.ufg.br/pat/article/view/13152Gossypium hirsutum L.cotton bollphosphate fertilizing
collection DOAJ
language English
format Article
sources DOAJ
author Leonardo Angelo de Aquino
Paulo Geraldo Berger
Júlio César Lima Neves
Tricia Costa Lima
Rosiane Filomena Batista Almeida de Aquino
spellingShingle Leonardo Angelo de Aquino
Paulo Geraldo Berger
Júlio César Lima Neves
Tricia Costa Lima
Rosiane Filomena Batista Almeida de Aquino
Phosphorus split application on irrigated cotton
Pesquisa Agropecuária Tropical
Gossypium hirsutum L.
cotton boll
phosphate fertilizing
author_facet Leonardo Angelo de Aquino
Paulo Geraldo Berger
Júlio César Lima Neves
Tricia Costa Lima
Rosiane Filomena Batista Almeida de Aquino
author_sort Leonardo Angelo de Aquino
title Phosphorus split application on irrigated cotton
title_short Phosphorus split application on irrigated cotton
title_full Phosphorus split application on irrigated cotton
title_fullStr Phosphorus split application on irrigated cotton
title_full_unstemmed Phosphorus split application on irrigated cotton
title_sort phosphorus split application on irrigated cotton
publisher Universidade Federal de Goiás
series Pesquisa Agropecuária Tropical
issn 1983-4063
publishDate 2012-03-01
description Most regions where cotton is cultivated in Brazil present low soil fertility, especially concerning the available phosphorus (P). This study aimed to evaluate the phosphorus split application on irrigated cotton, for reaching a higher phosphate fertilization efficiency, in comparison to the traditional application at sowing. The experiment was conducted in Quartzarenic Neosol with 22 mg dm-3 of P (medium availability), in the north region of the Minas Gerais State, Brazil. The design used was randomized blocks, in a (4x3) + 3 factorial scheme, with three replications. Treatments consisted of P2O5 doses (0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 180 kg ha-1) and three split applications (80% and 20%; 60% and 40%; 40% and 60% of the P dose applied respectively at sowing and at 35 days after emergence (DAE)), plus the application of 0 kg ha-1, 60 kg ha-1, and 120 kg ha-1 of P2O5 at sowing. The P source was the granulated triple superphosphate, and the P content in the shoots increased according to the doses applied. Nutrient contents in the index leaf, except for P, were not influenced by P levels and split applications. The P content in the index leaf and the number of cotton bolls per plant increased with the increment of P doses, but were not affected by the phosphate fertilizer split application. The application of 40% of the P dose at sowing and the remaining amount split at 35 DAE decreased the cotton boll yield, with no significant effect for the other split applications.
topic Gossypium hirsutum L.
cotton boll
phosphate fertilizing
url https://www.revistas.ufg.br/pat/article/view/13152
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AT paulogeraldoberger phosphorussplitapplicationonirrigatedcotton
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