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| Content Provider | African Journals Online (AJOL) |
|---|---|
| Author | Boubié V Bado Ouola Traoré Karim Traoré Bismarck H Nacro Michel P Sedogo Adama Traoré |
| Abstract | L’azote constitue un élément essentiel dans la nutrition minérale du riz. Au Burkina Faso, le riz pluvial entre de plus en plus dans les assolements. Cependant, le rendement du riz pluvial reste largement en deçà du potentiel des variétés. Afin de contribuer à une meilleure connaissance de la nutrition minérale du riz pluvial, un dispositif expérimental en split plot a été mis en place en station de recherche de Farako-Bâ en 2013 et 2014 pour évaluer l’effet des rotations et de la fertilisation azotée sur le rendement. Les résultats montrent que les meilleurs précédents du riz pluvial sont les légumineuses niébé et arachide. Ces deux précédents permettent un gain de rendements respectivement de 104% et 92% par rapport à la monoculture du riz. La dose de 90 kg N/ha a permis d’obtenir le rendement paddy le plus élevé soit une augmentation de 395% par rapport à la dose sans apport d’azote 0 kg N/ha et le poids de 1000 grains le plus élevé. Cependant la dose agronomique la plus efficace quel que soit le précédent cultural est de 60 kg N/ha. Les rotations et les doses d’azote ont un effet sur l’augmentation des rendements du riz paddy en culture pluviale.© 2015 International Formulae Group. All rights reserved.Mots clés: Riz pluvial, rotations, azote, légumineuses, Burkina Faso. Effect of previous crops and different nitrogen levels on the productivity of upland rice on ferruginous tropical soils of the South Sudan region of Burkina FasoNitrogen is an essential element in the mineral nutrition of rice. In Burkina Faso, more and more, upland rice enters in the crop rotation. However, the yield of upland rice remains under the potential of varieties. To contribute to a better understanding of the mineral nutrition of upland rice, an experimental split plot was tested in Farako-Bâ research station in 2013 and 2014. This was to evaluate the effect of crop rotations and the effect of nitrogen fertilization on yield of upland rice. The results show that the best previous crops of upland rice are legumes, cowpea and peanut. Both previous crops allow a gain of respectively 104% and 92% of yields compared to rice monoculture. The dose of 90 kg N/ha permitted to have highest paddy yield and an increase of 395% compared to the dose without nitrogen 0 kg N/ha and the highest weight of 1000 grains. However, the most effective agronomic dose regardless of the previous crop is obtained with the dose of 60 kg N/ha. Crops rotation and nitrogen level have an effect on upland rice yield.© 2015 International Formulae Group. All rights reserved. |
| Ending Page | 2858 |
| Starting Page | 2847 |
| File Format | |
| ISSN | 19918631 |
| e-ISSN | 1997342X |
| DOI | 10.4314/ijbcs.v9i6.25 |
| Journal | International Journal of Biological and Chemical Sciences |
| Issue Number | 6 |
| Volume Number | 9 |
| Language | English French |
| Publisher Date | 2016-05-19 |
| Access Restriction | Open |
| Subject Keyword | Biology Life Sciences Chemistry Mathematics Physics General Science Riz pluvial rotations azote légumineuses Burkina Faso. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Decision Sciences Chemistry Biotechnology Molecular Biology |
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