Corn yield functions of irrigation and nitrogen in Central America

Autor: R. K. Stuter, R. F. Wells, T. M. Fullerton, D. W. James, E. R. Shipe
Rok vydání: 1981
Předmět:
Zdroj: Irrigation Science. 2:79-88
ISSN: 1432-1319
0342-7188
DOI: 10.1007/bf00270751
Popis: This paper reports the results of a three-year field study conducted in El Salvador, Central America to develop yield response functions for corn to irrigation levels and nitrogen fertilizer. Four levels of irrigation were imposed using two application methods, furrow and trickle, in combination with four nitrogen fertilizer rates. Yields generally increased with higher levels of applied water and with higher nitrogen rates up to 200 kg N/ha, with a strong interaction between these two variables. Yield was independent of irrigation method although less water was applied with the trickle system.
Databáze: OpenAIRE