Agronomical inoculants€™ trials:phase I: Rhizobia strains€™ selection, for perennial soybean (Neonotonia wightii

Authors

  • Maria Josefa Fernandes Sanchez Instituto de Zootecnia, Divisão de Nutrição Animal e Pastagens, Seção de Agronomia de Plantas Forrageiras, Nova Odessa, SP
  • Paulo Bardauil Alcntara Instituto de Zootecnia, Divisão de Nutrição Animal e Pastagens, Seção de Agronomia de Plantas Forrageiras, Nova Odessa, SP

Abstract

Acting as the most promising forage legume in the State of São Paulo, perennial soybean has presented some agronomical problems due, maybe, to the legume Rhizobium association. The present work had the aim to find out through massal selection, Rhizobium populations with higher competitivity and efficiency. Soil collectings in three ancient perennial soybean cultivation sites in the State of São Paulo were made. Soil samples after progressive dilutions were inoculated in Leonard pots with legume seedlings. Nodules were collected 60 days after inoculation using those pots with higher dilutions. Two hundred and seven isolates from nodules were tested on their capacity of fixing N. One strain, i,94b, gave more total N (P < 001) than the others, overcoming the recomended ones. Direct isolation x isolation after acetilen reduction; recomended strains x N controls; native isolations x recomended strains + N controls contrasts were highly significant (P < 0,01) for DMP per pot and for total N amount per pot.

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Published

2014-01-29

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Agronomical inoculants€™ trials:phase I: Rhizobia strains€™ selection, for perennial soybean (Neonotonia wightii. (2014). Bulletin of Animal Husbandry, 45(1), 199-213. http://35.198.24.243/index.php/bia/article/view/696

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