Data/hora: 11/06/2024 13:21:18

Provedor de dados: | 52
País: | Brazil
Título: | Soil resistance to penetration and least limiting water range for soybean yield in a haplustox from Brazil
Autores: | Beutler,Amauri Nelson; Centurion,José Frederico; Silva,Alvaro Pires da.
Data: | 2005-11-01
Ano: | 2005
Palavras-chave: | Glycine max; Water content; Resistance to penetration; Bulk density.
Resumo: | The objective of this study was determine the resistance to penetration (PR), least limiting water range (LLWR) and critical bulk density (Db-crit) for soybean yield in a medium-textured oxisol (Haplustox). The treatments represented the soil compaction by passing a tractor over the site 0, 1, 2, 4, and 6 times, with 4 replications in a randomized experimental design. Samples were collected from 0.02-0.05, 0.07-0.10 and 0.15-0.18 m depths. Soybean (Glycine max cv. Embrapa 48) was sowed in December 2002. Plant height, number of pods, aerial dry matter, weight of 100 seeds, and the yield in 3.6 m² plots were recorded. Soybean yield started reduction at the PR of 0.85 MPa and Db of 1.48 Mg m-3. The LLWR was limited in highest part by water content at field capacity (0.01 MPa tension) and in lowest part by water content at PRcrit, achieved the Db-crit to yield at 1.48 Mg m-3.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800002
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132005000800002
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.48 n.6 2005
Fonte: | info:eu-repo/semantics/openAccess