Predicting N Mineralization Using the Direct Steam Distillation Method in Flooded Soils

Flooded rice is a highly relevant in the State of Rio Grande do Sul (RS) where 1.07 million hectares were cropped in 2012/13 season producing 8 million tons, which represented 69% of the national production. Nitrogen recommendation for upland or flooded rice in RS is based on soil organic matter (SOM) content but, nevertheless, yield has not presented high correlation with SOM recently. Therefore, studies are in place to develope methods and plant/soil parameters more efficient to predict N availability along the crop cycle or even prior seeding time. This project aims to evaluate the ability of the Direct Steam Distillation method in predicting N mineralization in flooded soils of RS.

IPNI-2014-BRA-64