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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Universidade Federal de Goiás
2012-03-01
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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 |
work_keys_str_mv |
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