Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Soja. |
Data corrente: |
26/10/1992 |
Data da última atualização: |
26/10/1992 |
Autoria: |
WIERSMA, J. V.; ORF, J. H. |
Afiliação: |
Univ. of Minnesota, Northwest Exp. Stn., Crookston, MN 56716. |
Título: |
Early maturing soybean nodulation and performance with selected Bradyrhizobium japonicum strains. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
Agronomy Journal, v.84, n.3, p.449-458, 1992. |
Idioma: |
Inglês Português |
Conteúdo: |
Seed inoculation with Bradyrhizobium japonicum (Kirchner) Jordan is a common production practice for most soybean [Glycine max (L.) Merr.] growers in northwest Minnesota; however, plants seldom are well-nodulated. Our objectives were to (i) identify strains of B. japonicum that enhance nodulation and agronomic performance of Maturity Group 00 soybean cultivars grown on soils having a range of NO3 - -N concentrations; and (ii) asses cultivar-by-strain specificity. Six cultivars and five B. Japonicum strains were evaluated in six field trials during 1988 to 1990. Nonfertilized (1988-1990) and N fertilized (1990), uninoculated controls were included. Soil NO3 - -N concentrations (0-60 cm) at planting ranged from 52 to 175 kg N ha -1. Residual soil NO3 - -N values were low and substantially less than initial values in only three environments. Nonetheless, significant increases in response to inoculation were observed for grain yield, seed weight, and grain N concentration in 17 of 18 comparisons. In 1990 trials, fertilizer N (168 kg ha -1) increased seed weight and grain N concentration significantly more than inoculation. Nodule number (r = -0.89; significant at P = 0.05) and dry weight (r = -0.97; significant at P = 0.01) were inversely correlated with soil NO3 - -N (0-60 cm) at planting. Estimated (difference method) N2 fixation (r = -0.93; significant at P = 0.05) and relative increases in grain yield (r = -0.93; significant st P = 0.05), seed weight (r = -0.97; significant at P = 0.01) and grain N concentration (r MenosSeed inoculation with Bradyrhizobium japonicum (Kirchner) Jordan is a common production practice for most soybean [Glycine max (L.) Merr.] growers in northwest Minnesota; however, plants seldom are well-nodulated. Our objectives were to (i) identify strains of B. japonicum that enhance nodulation and agronomic performance of Maturity Group 00 soybean cultivars grown on soils having a range of NO3 - -N concentrations; and (ii) asses cultivar-by-strain specificity. Six cultivars and five B. Japonicum strains were evaluated in six field trials during 1988 to 1990. Nonfertilized (1988-1990) and N fertilized (1990), uninoculated controls were included. Soil NO3 - -N concentrations (0-60 cm) at planting ranged from 52 to 175 kg N ha -1. Residual soil NO3 - -N values were low and substantially less than initial values in only three environments. Nonetheless, significant increases in response to inoculation were observed for grain yield, seed weight, and grain N concentration in 17 of 18 comparisons. In 1990 trials, fertilizer N (168 kg ha -1) increased seed weight and grain N concentration significantly more than inoculation. Nodule number (r = -0.89; significant at P = 0.05) and dry weight (r = -0.97; significant at P = 0.01) were inversely correlated with soil NO3 - -N (0-60 cm) at planting. Estimated (difference method) N2 fixation (r = -0.93; significant at P = 0.05) and relative increases in grain yield (r = -0.93; significant st P = 0.05), seed weight (r = -0.97; significant ... Mostrar Tudo |
Palavras-Chave: |
RIZOBIO; SELECAO DE ESTIRPE. |
Thesagro: |
Bactéria; Bradyrhizobium Japonicum; Leguminosa; Nitrato; Nitrogênio; Nodulação; Nódulo; Simbiose; Soja. |
Categoria do assunto: |
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Marc: |
LEADER 02237naa a2200265 a 4500 001 1458345 005 1992-10-26 008 1992 bl --- 0-- u #d 100 1 $aWIERSMA, J. V. 245 $aEarly maturing soybean nodulation and performance with selected Bradyrhizobium japonicum strains. 260 $c1992 520 $aSeed inoculation with Bradyrhizobium japonicum (Kirchner) Jordan is a common production practice for most soybean [Glycine max (L.) Merr.] growers in northwest Minnesota; however, plants seldom are well-nodulated. Our objectives were to (i) identify strains of B. japonicum that enhance nodulation and agronomic performance of Maturity Group 00 soybean cultivars grown on soils having a range of NO3 - -N concentrations; and (ii) asses cultivar-by-strain specificity. Six cultivars and five B. Japonicum strains were evaluated in six field trials during 1988 to 1990. Nonfertilized (1988-1990) and N fertilized (1990), uninoculated controls were included. Soil NO3 - -N concentrations (0-60 cm) at planting ranged from 52 to 175 kg N ha -1. Residual soil NO3 - -N values were low and substantially less than initial values in only three environments. Nonetheless, significant increases in response to inoculation were observed for grain yield, seed weight, and grain N concentration in 17 of 18 comparisons. In 1990 trials, fertilizer N (168 kg ha -1) increased seed weight and grain N concentration significantly more than inoculation. Nodule number (r = -0.89; significant at P = 0.05) and dry weight (r = -0.97; significant at P = 0.01) were inversely correlated with soil NO3 - -N (0-60 cm) at planting. Estimated (difference method) N2 fixation (r = -0.93; significant at P = 0.05) and relative increases in grain yield (r = -0.93; significant st P = 0.05), seed weight (r = -0.97; significant at P = 0.01) and grain N concentration (r 650 $aBactéria 650 $aBradyrhizobium Japonicum 650 $aLeguminosa 650 $aNitrato 650 $aNitrogênio 650 $aNodulação 650 $aNódulo 650 $aSimbiose 650 $aSoja 653 $aRIZOBIO 653 $aSELECAO DE ESTIRPE 700 1 $aORF, J. H. 773 $tAgronomy Journal$gv.84, n.3, p.449-458, 1992.
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Registro original: |
Embrapa Soja (CNPSO) |
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