VEDIE, Hélène (2009) Fertilisation de la courge de plein champ en AB. [Squash fertilization in organic farming in open field.] . [Submitted]
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Summary
Un essai fertilisation comparant différentes doses d'azote total apportées (0-50-100-150 unités/ha) et 2 formes d'engrais organique(tourteau de ricin et Orga 6)a été conduit en plein champ pendant l'été 2009. Les résultats montrent que l'optimum agronomique et économique de cet essai est de 100 unités/ha apportées avec le tourteau de ricin, qui s'avère plus efficient que l'autre engrais testé.
Summary translation
Since 2003, nitrogen rate experiments have been carried out by the GRAB on vegetable crops in open fied. In 2009, the trial was conducted on the butternut squah, with increasing amounts of total nitrogen : 0 – 50 – 100 – 150 kg/ha, and 2 organic fertilizers.
We found that on average, the highest rates of applied nitrogen (100 and 150 kg/ha) have caused the highest nitrate levels in the soil and higher yields (mainly due to a greater number of fruit per plant).
As in previous years, the castor cake gave good performance for crop fertilization : its nitrogen seems to mineralize more slowly but more completely than the other fertilizer (Bioca-organica 6.3.3, Phalippou Frayssinet), and gave higher yield.
| EPrint Type: | Other |
|---|---|
| Keywords: | fertilisation – azote – agriculture biologique - courge |
| Subjects: | Soil > Nutrient turnover Soil Crop husbandry > Production systems > Vegetables |
| Research affiliation: | France France > GRAB - Groupe de Recherche en Agriculture biologique |
| Deposited By: | VEDIE, Hélène |
| ID Code: | 17108 |
| Deposited On: | 25 May 2010 14:29 |
| Last Modified: | 10 Jun 2010 06:43 |
| Document Language: | French/Francais |
| Status: | Unpublished |
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