Upland rice yield and soil water retention capacity as affected by cultural practices
Main Author: | |
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Publication Date: | 2014 |
Other Authors: | , |
Format: | Article |
Language: | por |
Source: | Pesquisa Agropecuária Brasileira (Online) |
Download full: | https://seer.sct.embrapa.br/index.php/pab/article/view/16462 |
Summary: | Three experiments were carried out to determine the effect of cultural practices on the soil water retention capacity and upland rice yield, using the cultivar 'IAC 47'. The treatments were: a. Subsoiling at 0.60 m depth, spaced 0.50 m; b. Soil harrowing when a hard crust was formed on its surface; c. Liming at 0.30 m depth at the rate of 2.5 t/ha; d. Mulching with rice straw at the rate of 2.5 t/ha and e. Check which was the conventional sowing after the soil tillage with one plowing and two diskings. In the second and third experiments no-tillage treatment was included. Although drought periods (veranicos) occurred, they were not long enough to reduce significantly grain yield. There was no significant difference among the treatments and the check on soil water retention and grain yield. There was tendency of increased production with the treatments of subsoiling and liming and decreased grain yield with the no-tillage treatment. The increase in production due to subsoiling and liming may be related to soil structure modifications and improvement of its chemical properties. The relatively reduced grain yields under no-tillage treatment may be attributed to restricted root development resulting from soil compactness. |
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Upland rice yield and soil water retention capacity as affected by cultural practicesInfluência de práticas culturais na capacidade de retenção de água do solo e no rendimento do arroz-de-sequeirosubsoiling; harrowing; liming; mulching; no-tillage; upland riceescarificação; calagem; cobertura morta; plantio direto; arroz sequeiroThree experiments were carried out to determine the effect of cultural practices on the soil water retention capacity and upland rice yield, using the cultivar 'IAC 47'. The treatments were: a. Subsoiling at 0.60 m depth, spaced 0.50 m; b. Soil harrowing when a hard crust was formed on its surface; c. Liming at 0.30 m depth at the rate of 2.5 t/ha; d. Mulching with rice straw at the rate of 2.5 t/ha and e. Check which was the conventional sowing after the soil tillage with one plowing and two diskings. In the second and third experiments no-tillage treatment was included. Although drought periods (veranicos) occurred, they were not long enough to reduce significantly grain yield. There was no significant difference among the treatments and the check on soil water retention and grain yield. There was tendency of increased production with the treatments of subsoiling and liming and decreased grain yield with the no-tillage treatment. The increase in production due to subsoiling and liming may be related to soil structure modifications and improvement of its chemical properties. The relatively reduced grain yields under no-tillage treatment may be attributed to restricted root development resulting from soil compactness.Foram conduzidos três experimentos com o objetivo de determinar o efeito de práticas culturais na capacidade de retenção de água do solo e no rendimento do arroz-de-sequeiro, na cultivar 'IAC 47'. Os tratamentos consistiram de: a. Subsolagem na profundidade de 0.60 m. com o espaçamento de 0,50 m; b. Escarificação do solo, sempre que se formou uma crosta dura sobre a sua superfície; c. Incorporação de calcário na profundidade de 0,30 m, na dosagem de 2.5 t/ha; d. Cobertura morta com palha-de-arroz, na quantidade de 2,5 t/ha; e e. Testemunha, que consistiu no plantio convencional, após o preparo do solo com uma aração e duas gradagens. No segundo e terceiro experimentos foi acrescentado um tratamento, que consistiu no plantio direto, após a roçagem da área e aplicação do herbicida "Paraquat CE" (0,8 l/ha de p.a.). Apesar da ocorrência de veranicos, estes não foram bastante longos a ponto de reduzirem significativamente a produção. Os tratamentos não diferiram da Testemunha com relação à retenção de água do solo e à produção, apesar de ter havido uma tendência para as maiores produções serem verificadas nos tratamentos de subsolagem e incorporação de calcário, e as menores, no tratamento de plantio direto. As maiores produções foram decorrentes, provavelmente, das alterações na estrutura do solo e da melhoria de suas características químicas, permitindo maior desenvolvimento radicular. Por outro lado, a limitação deste desenvolvimento, devido à compactação do solo, poderia ser a causa das baixas produções verificadas no tratamento de plantio direto.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraStone, Luis FernandoSantos, Alberto Baêta dosSteinmetz, Silvio2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16462Pesquisa Agropecuaria Brasileira; v.15, n.1, jan. 1980; 63-68Pesquisa Agropecuária Brasileira; v.15, n.1, jan. 1980; 63-681678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16462/10729info:eu-repo/semantics/openAccess2014-04-15T19:28:59Zoai:ojs.seer.sct.embrapa.br:article/16462Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:28:59Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Upland rice yield and soil water retention capacity as affected by cultural practices Influência de práticas culturais na capacidade de retenção de água do solo e no rendimento do arroz-de-sequeiro |
title |
Upland rice yield and soil water retention capacity as affected by cultural practices |
spellingShingle |
Upland rice yield and soil water retention capacity as affected by cultural practices Stone, Luis Fernando subsoiling; harrowing; liming; mulching; no-tillage; upland rice escarificação; calagem; cobertura morta; plantio direto; arroz sequeiro |
title_short |
Upland rice yield and soil water retention capacity as affected by cultural practices |
title_full |
Upland rice yield and soil water retention capacity as affected by cultural practices |
title_fullStr |
Upland rice yield and soil water retention capacity as affected by cultural practices |
title_full_unstemmed |
Upland rice yield and soil water retention capacity as affected by cultural practices |
title_sort |
Upland rice yield and soil water retention capacity as affected by cultural practices |
author |
Stone, Luis Fernando |
author_facet |
Stone, Luis Fernando Santos, Alberto Baêta dos Steinmetz, Silvio |
author_role |
author |
author2 |
Santos, Alberto Baêta dos Steinmetz, Silvio |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Stone, Luis Fernando Santos, Alberto Baêta dos Steinmetz, Silvio |
dc.subject.por.fl_str_mv |
subsoiling; harrowing; liming; mulching; no-tillage; upland rice escarificação; calagem; cobertura morta; plantio direto; arroz sequeiro |
topic |
subsoiling; harrowing; liming; mulching; no-tillage; upland rice escarificação; calagem; cobertura morta; plantio direto; arroz sequeiro |
description |
Three experiments were carried out to determine the effect of cultural practices on the soil water retention capacity and upland rice yield, using the cultivar 'IAC 47'. The treatments were: a. Subsoiling at 0.60 m depth, spaced 0.50 m; b. Soil harrowing when a hard crust was formed on its surface; c. Liming at 0.30 m depth at the rate of 2.5 t/ha; d. Mulching with rice straw at the rate of 2.5 t/ha and e. Check which was the conventional sowing after the soil tillage with one plowing and two diskings. In the second and third experiments no-tillage treatment was included. Although drought periods (veranicos) occurred, they were not long enough to reduce significantly grain yield. There was no significant difference among the treatments and the check on soil water retention and grain yield. There was tendency of increased production with the treatments of subsoiling and liming and decreased grain yield with the no-tillage treatment. The increase in production due to subsoiling and liming may be related to soil structure modifications and improvement of its chemical properties. The relatively reduced grain yields under no-tillage treatment may be attributed to restricted root development resulting from soil compactness. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16462 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16462 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16462/10729 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.15, n.1, jan. 1980; 63-68 Pesquisa Agropecuária Brasileira; v.15, n.1, jan. 1980; 63-68 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416657460264960 |