Sources, times of application and nitrogen doses on corn crop in savannah condition

• Grant number: 07/05659-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2007
• End date: June 30, 2009
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Salatier Buzetti
• Grantee: Juliana Aparecida de Souza
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

The corn crop has high productivity potential, however, in Brazil it is below to desirable. To obtain high productivity and economical feasible the mineral nutrition is essential and N provide the higher effects on it. This study has the objective to evaluate sources, times of N application and N doses on productivity components and grain productivity, besides N on leaf and clorophyl content. The soil is a Latosol, located at experimental station of UNESP/FEIS in Selviria - MS. The design is a randomized block in a factorial scheme: 3x2x5, 3 N sources: entec, ammonium sulfate and urea, 2 times of application and 5 doses of N: 0, 50, 100, 150 and 200 kg/ha. It will be evaluated: fall index, N content on leaf, clorophyl content, productivity components and grain productivity. (AU)