Nitrogen doses in forage intercropped with maize under residual effect of co-inoculation in soybean crop
Products based on Azospirillum brasilense are recommended for co-inoculation in soybean cultivation, together with Bradyrhizobium, which may have a residual effect for subsequent crops. The objective of this research was to verify the response of the forage in relation to the residual effect of inoculation and co-inoculation in soybean culture, together with the application of nitrogen doses in cover in the corn + brachiaria consortium. Dry mass of two cuts, straw production, leaf: stem ratio, spad index, N content and the recovery rates and efficiency of N use were evaluated. Co-inoculation in soybean culture provided residual effect in the first cut forage; obtaining better results for dry straw. For leaf: stem ratio, inoculation showed the best index. The efficiency of use of N by the brachiaria (Urochloa ruziziensis) increased while the recovery of applied N, agronomic efficiency and physiological efficiency decreased with the increase of applied N doses.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2020
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/10923 |
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| Summary: | Products based on Azospirillum brasilense are recommended for co-inoculation in soybean cultivation, together with Bradyrhizobium, which may have a residual effect for subsequent crops. The objective of this research was to verify the response of the forage in relation to the residual effect of inoculation and co-inoculation in soybean culture, together with the application of nitrogen doses in cover in the corn + brachiaria consortium. Dry mass of two cuts, straw production, leaf: stem ratio, spad index, N content and the recovery rates and efficiency of N use were evaluated. Co-inoculation in soybean culture provided residual effect in the first cut forage; obtaining better results for dry straw. For leaf: stem ratio, inoculation showed the best index. The efficiency of use of N by the brachiaria (Urochloa ruziziensis) increased while the recovery of applied N, agronomic efficiency and physiological efficiency decreased with the increase of applied N doses. |
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