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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/12/1999 |
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Data da última atualização: |
13/12/1999 |
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Autoria: |
HUNTINGTON, T. G. |
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Título: |
The influence of tillage, inoculation and the regulation of symbiotic nitrogen fixation on the production of field beans and the mineralization of nitrogen from winter annual cover crops. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Lexington: University of Kentuchy, 1984. |
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Páginas: |
158p. |
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Idioma: |
Inglês |
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Notas: |
Ph. D. Thesis. |
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Conteúdo: |
Field experiments were established at several locations in the. Dominican Republic in 1982 and 1983. Initial experiments evaluated the no-tillage cropping system in this subtropical invironment. Subsequent experiments examined the response of beans (Phaseolus vulgaris) to inoculation with improved strains of Rhizobium phaseoli and determined the influence of tillage and phosphorus fertilization on the inoculation response. The effectiveness of indigenous strains of Rhizobium phaseoli was compared with commercial inoculant and nitrogen fertilizer by evaluating the growth response of Phaseolus vulgaris in the greenhouse. Further investigations were designed to probe the limitatios to nitrogen fixation inherent in this association. The age-nitrogenase enzyme activity profiles of different host/endophyte combinations were characterized to distinquish wether temporal regulation or fixation rate was the primary limiting factor. An analysis of nitrogen mineralization from killed winter annual cover crops and subsequent nitrogen recovery by no-till corn was made in Princeton, Kentucky in 1982. Initial experiments in the Dominican Republic have demonstrated the adaptability of the no- tillage system to various soil and climact conditions. Grain yelds of red beans were not influenced by inoculation with Rhizobium. The response to inoculation was not influenced by tillage or phosphorus. It is tentatively concluded that this cultivar of P. vulgaris forms an ineffective symbiotic association with the limitations to fixation being genetic rather than envirommental. A wide range in fixation effectiveness between indigenous strains of R. phaseoli was observed. The most effective strains were asignificantly less effective than nitrogen fertilizer in supplying plant nitrogen requirements. Variability was observed between bean types in age- activity profile and the proportion of nitrogen fixation occurring after flowering sggesting the importance of temporal regulation of nodule activity in the effectivenes of different bean types. Comparisons btween effective and ineffective strains indicated that fixation rate was the most important factor controlling effectiveness between strains. In the study of nitrogen mineralization from winter annual cover crops it was demonstrated that the majority of nitrogen released during the corn growing season became available after corn silking, suggesting the potential for enhanced synchronization through careful management. MenosField experiments were established at several locations in the. Dominican Republic in 1982 and 1983. Initial experiments evaluated the no-tillage cropping system in this subtropical invironment. Subsequent experiments examined the response of beans (Phaseolus vulgaris) to inoculation with improved strains of Rhizobium phaseoli and determined the influence of tillage and phosphorus fertilization on the inoculation response. The effectiveness of indigenous strains of Rhizobium phaseoli was compared with commercial inoculant and nitrogen fertilizer by evaluating the growth response of Phaseolus vulgaris in the greenhouse. Further investigations were designed to probe the limitatios to nitrogen fixation inherent in this association. The age-nitrogenase enzyme activity profiles of different host/endophyte combinations were characterized to distinquish wether temporal regulation or fixation rate was the primary limiting factor. An analysis of nitrogen mineralization from killed winter annual cover crops and subsequent nitrogen recovery by no-till corn was made in Princeton, Kentucky in 1982. Initial experiments in the Dominican Republic have demonstrated the adaptability of the no- tillage system to various soil and climact conditions. Grain yelds of red beans were not influenced by inoculation with Rhizobium. The response to inoculation was not influenced by tillage or phosphorus. It is tentatively concluded that this cultivar of P. vulgaris forms an ineffective symbiotic associ... Mostrar Tudo |
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Palavras-Chave: |
Cultivo de inverno; Winter crops. |
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Thesagro: |
Cultivo do Solo; Feijão; Fixação de Nitrogênio; Inoculação; Manejo do Solo; Mineralização; Phaseolus Vulgaris; Rhizobium; Simbiose. |
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Thesaurus Nal: |
inoculation methods; kidney beans; mineralization; nitrogen fixation; symbiosis; tillage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03490nam a2200337 a 4500
001 1559460
005 1999-12-13
008 1984 bl uuuu m 00u1 u #d
100 1 $aHUNTINGTON, T. G.
245 $aThe influence of tillage, inoculation and the regulation of symbiotic nitrogen fixation on the production of field beans and the mineralization of nitrogen from winter annual cover crops.
260 $aLexington: University of Kentuchy$c1984
300 $a158p.
500 $aPh. D. Thesis.
520 $aField experiments were established at several locations in the. Dominican Republic in 1982 and 1983. Initial experiments evaluated the no-tillage cropping system in this subtropical invironment. Subsequent experiments examined the response of beans (Phaseolus vulgaris) to inoculation with improved strains of Rhizobium phaseoli and determined the influence of tillage and phosphorus fertilization on the inoculation response. The effectiveness of indigenous strains of Rhizobium phaseoli was compared with commercial inoculant and nitrogen fertilizer by evaluating the growth response of Phaseolus vulgaris in the greenhouse. Further investigations were designed to probe the limitatios to nitrogen fixation inherent in this association. The age-nitrogenase enzyme activity profiles of different host/endophyte combinations were characterized to distinquish wether temporal regulation or fixation rate was the primary limiting factor. An analysis of nitrogen mineralization from killed winter annual cover crops and subsequent nitrogen recovery by no-till corn was made in Princeton, Kentucky in 1982. Initial experiments in the Dominican Republic have demonstrated the adaptability of the no- tillage system to various soil and climact conditions. Grain yelds of red beans were not influenced by inoculation with Rhizobium. The response to inoculation was not influenced by tillage or phosphorus. It is tentatively concluded that this cultivar of P. vulgaris forms an ineffective symbiotic association with the limitations to fixation being genetic rather than envirommental. A wide range in fixation effectiveness between indigenous strains of R. phaseoli was observed. The most effective strains were asignificantly less effective than nitrogen fertilizer in supplying plant nitrogen requirements. Variability was observed between bean types in age- activity profile and the proportion of nitrogen fixation occurring after flowering sggesting the importance of temporal regulation of nodule activity in the effectivenes of different bean types. Comparisons btween effective and ineffective strains indicated that fixation rate was the most important factor controlling effectiveness between strains. In the study of nitrogen mineralization from winter annual cover crops it was demonstrated that the majority of nitrogen released during the corn growing season became available after corn silking, suggesting the potential for enhanced synchronization through careful management.
650 $ainoculation methods
650 $akidney beans
650 $amineralization
650 $anitrogen fixation
650 $asymbiosis
650 $atillage
650 $aCultivo do Solo
650 $aFeijão
650 $aFixação de Nitrogênio
650 $aInoculação
650 $aManejo do Solo
650 $aMineralização
650 $aPhaseolus Vulgaris
650 $aRhizobium
650 $aSimbiose
653 $aCultivo de inverno
653 $aWinter crops
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