Exploration of Responses to Potassium in Western Uruguay
Several regions of Uruguay has recently shown K deficiencies and responses. This project looks to determine the different areas with K deficiency, evaluate responses in the main field crops, and provide information on K soil testing.
IPNI-2007-URY-2
24 Feb 2009
Exploration of responses to potassium in Western Uruguay - Results field trials 2007/08
Exploration of responses to potassium in Western Uruguay - Results field trials 2007/08
Three corn field experiments were established in contrasting soils in the western Uruguay agricultural region in the 2007/08 season. The objective of these studies was to explore K deficiency and yield response under different soils.
Results are summarized in the following table:
El Paraiso and Tres Aguas show no response either to K or S. Responses to K at La Macarena were similar to the ones observed at a previous site on the 2006/07 season (see 2006/07 Results), and at experiments carried out by other researchers in the area.
Photos showing K response in corn at La Macarena site:
Future research will look into the potential area with K deficiency in the region in collaboration with the Faculty of Agronomy (Universidad de la Republica, Uruguay), INIA, and local coops.