| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
|
Data corrente: |
29/11/1993 |
|
Data da última atualização: |
29/11/1993 |
|
Autoria: |
DUNCAN, R. R. |
|
Afiliação: |
University of Georgia, Georgia Experiment Station, Griffin, USA. |
|
Título: |
The influence of soil pH on sorghum grain yields. |
|
Ano de publicação: |
1991 |
|
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v.22, n.15/16, p.1605-1611, 1991. |
|
Idioma: |
Inglês |
|
Notas: |
Separata. |
|
Conteúdo: |
Sorghum bicolor (L.) Moench is sensitive to acid soil stress environments. Acid soil stress tolerance is quite complex and involves additively inherited characteristics dealing with aluminum and manganese toxicities and calcium, magnesium, and phosphorus deficiencies. Genotype-by-environment interactions in unstressed environments are normally high for yield parameters and stress environments escalate the problem. Thirty parental lines and hybrids were compared in the field at mean H2O/KCI pH values of 6.6/5.9, 5.7/5.0, 5.0/4.6, and 4.4/4.1 from 1982-1988 on a Suches clay loam (Fluventic Dystrochrept). All yield data were compared against IS7173C (SC283), an internationally tolerant check. Mean yields decreased 19% as pH dropped from 6.6/5.9 to 5.0/4.6. Yieldswere reduced 67% as pH dropped from 5.0/4.6 to 4.4/4.1 which reinforced previous research indicating that soil pH must be below pH 4.9 (H2O) and have less than 5% organic matter for proper acid soil stress screening and evaluation of sorghum. Soil aluminum saturation values averaging 50% provide a maximum level of stress for sorghum. Hybrids and parental lines responded differently to stress, with the most stable producer across environments and highest-yielding hybrid being ASC599xGP140. Percent relative yield of SC283 and tolerance indices (low yield + high yield) gave parallel results and were particularly indicative of previous genotypic field responses. Hybrid combinations involving specific parental lines governed relative tolerance of each genotype. MenosSorghum bicolor (L.) Moench is sensitive to acid soil stress environments. Acid soil stress tolerance is quite complex and involves additively inherited characteristics dealing with aluminum and manganese toxicities and calcium, magnesium, and phosphorus deficiencies. Genotype-by-environment interactions in unstressed environments are normally high for yield parameters and stress environments escalate the problem. Thirty parental lines and hybrids were compared in the field at mean H2O/KCI pH values of 6.6/5.9, 5.7/5.0, 5.0/4.6, and 4.4/4.1 from 1982-1988 on a Suches clay loam (Fluventic Dystrochrept). All yield data were compared against IS7173C (SC283), an internationally tolerant check. Mean yields decreased 19% as pH dropped from 6.6/5.9 to 5.0/4.6. Yieldswere reduced 67% as pH dropped from 5.0/4.6 to 4.4/4.1 which reinforced previous research indicating that soil pH must be below pH 4.9 (H2O) and have less than 5% organic matter for proper acid soil stress screening and evaluation of sorghum. Soil aluminum saturation values averaging 50% provide a maximum level of stress for sorghum. Hybrids and parental lines responded differently to stress, with the most stable producer across environments and highest-yielding hybrid being ASC599xGP140. Percent relative yield of SC283 and tolerance indices (low yield + high yield) gave parallel results and were particularly indicative of previous genotypic field responses. Hybrid combinations involving specific parental lines governed... Mostrar Tudo |
|
Palavras-Chave: |
Influence; Influencia. |
|
Thesagro: |
Ph; Solo; Sorghum Bicolor; Sorgo Granífero. |
|
Thesaurus Nal: |
grain sorghum; soil. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02128naa a2200229 a 4500
001 1073859
005 1993-11-29
008 1991 bl --- 0-- u #d
100 1 $aDUNCAN, R. R.
245 $aThe influence of soil pH on sorghum grain yields.
260 $c1991
500 $aSeparata.
520 $aSorghum bicolor (L.) Moench is sensitive to acid soil stress environments. Acid soil stress tolerance is quite complex and involves additively inherited characteristics dealing with aluminum and manganese toxicities and calcium, magnesium, and phosphorus deficiencies. Genotype-by-environment interactions in unstressed environments are normally high for yield parameters and stress environments escalate the problem. Thirty parental lines and hybrids were compared in the field at mean H2O/KCI pH values of 6.6/5.9, 5.7/5.0, 5.0/4.6, and 4.4/4.1 from 1982-1988 on a Suches clay loam (Fluventic Dystrochrept). All yield data were compared against IS7173C (SC283), an internationally tolerant check. Mean yields decreased 19% as pH dropped from 6.6/5.9 to 5.0/4.6. Yieldswere reduced 67% as pH dropped from 5.0/4.6 to 4.4/4.1 which reinforced previous research indicating that soil pH must be below pH 4.9 (H2O) and have less than 5% organic matter for proper acid soil stress screening and evaluation of sorghum. Soil aluminum saturation values averaging 50% provide a maximum level of stress for sorghum. Hybrids and parental lines responded differently to stress, with the most stable producer across environments and highest-yielding hybrid being ASC599xGP140. Percent relative yield of SC283 and tolerance indices (low yield + high yield) gave parallel results and were particularly indicative of previous genotypic field responses. Hybrid combinations involving specific parental lines governed relative tolerance of each genotype.
650 $agrain sorghum
650 $asoil
650 $aPh
650 $aSolo
650 $aSorghum Bicolor
650 $aSorgo Granífero
653 $aInfluence
653 $aInfluencia
773 $tCommunications in Soil Science and Plant Analysis$gv.22, n.15/16, p.1605-1611, 1991.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 1 | |
| Registros recuperados : 1 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
