Onion cultivation

The aim of this work was to describe aspects related to onion cultivation through bibliographical research in books magazines articles and theses as well as the implementation of experiments in the area of soil fertility management and nutrition of the onion crop. During the 2011/2012 harvest different experiments were set up at EPAGRI - Ituporanga-SC Experimental Station (EEITU) to evaluate the response to phosphate potassium organic and organo-mineral fertilization with the aim of obtaining regional fertilization and fertilizer management recommendations. To this end two experiments were carried out with increasing doses of phosphorus (0 50 100 200 400 and 800 kg ha-1 ) in soil with different levels of P. One experiment was for potassium (0 50 100 200 400 and 800 kg ha-1 ); one of Potassium (0 50 100 200 400 and 800 kg ha-1) and an experiment with organo-mineral fertilization (0 4500 9000 18000 kg ha-1 of poultry manure mineral fertilization (NPK) 100 120 90 kg ha-1 respectively and poultry manure + mineral fertilization (NPK) in addition to organic fertilization. The results were satisfactory and will be presented in the course of the work.