Estudio sobre dos formas de aplicación de cinco fuentes de fertilizante nitrogenado con dos niveles de humedad de suelo en arroz (Oryza sativa L.)
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2011
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Facultad de Ciencias Agrarias Universidad de Guayaquil
Resumen
los siguientes: 1) Determinar la mejor fuente de fertilizante nitrogenado en
arroz; 2) Determinar la mejor forma de aplicación de cinco fuentes
nitrogenadas en la variedad de arroz INIAP 18; 3) Evaluar la respuesta del
cultivo de arroz a la aplicación de nitrógeno en suelo húmedo y seco; y 4)
Medir la absorción de nitrógeno en el cultivo de arroz.
Los factores estudiados fueron cinco fuentes de fertilizante nitrogenado,
urea líquida, urea granulada, sulfato de amonio, nitrato de amonio y
fertilizante de liberación controlada;el segundo factor consistió en formas
de aplicación del fertilizante, al voleo e incorporadas y el tercer factor
aplicaciones de fertilizante nitrogenado en suelo húmedo y en suelo seco,
Se utilizó un diseño de bloque al azar con arreglo factorial 5 x 2 x 2 en
comparación con un testigo absoluto; se midieron variables agronómicas y
químicas de suelos y tejidos.
Las conclusiones que se tuvieron del presente trabajo de investigación
fueron: 1) Las fuentes de fertilizante nitrogenado tuvieron prácticamente
igual comportamiento; 2) Las formas de aplicación al voleo e
incorporados de fertilizante nitrogenados fueron similares de acuerdo a las
características agronómicas medidas; 3) No se presentó diferencias
estadísticas a las aplicaciones de nitrógeno en suelo húmedo y suelo seco;
4)Las mayores absorciones de nitrógeno por la planta se dieron con el
sulfato de amonio, en aplicaciones al voleo y con suelo húmedo, 5)El
the following: 1) Determine the best source of nitrogen fertilizer rice; 2) Determine the best mode of application of five sources nitrogen in the rice variety INIAP 18; 3) Evaluate response rice to the application of nitrogen in wet and dry soil; and 4) Measure the absorption of nitrogen in rice cultivation. The factors studied were five sources of nitrogen fertilizer, Liquid urea, granular urea, ammonium sulfate, ammonium nitrate and controlled release fertilizer, the second factor consisted forms fertilizer application, broadcast and incorporated and the third factor nitrogen fertilizer applications in moist and dry soil, Design used randomized block factorial arrangement 5 x 2 x 2 compared to an absolute control; agronomic variables were measured and chemical soil and tissues. The conclusions of this study were research They were: 1) The sources of nitrogen fertilizer had virtually like behavior; 2) Application forms and broadcast They were incorporated nitrogenous fertilizer according to similar agronomic characteristics; 3) There was presented differences statistics nitrogen applications in moist and dry soil; 4) The highest nitrogen absorption by the plant gave the ammonium sulphate and broadcast applications with moist soil, 5)
the following: 1) Determine the best source of nitrogen fertilizer rice; 2) Determine the best mode of application of five sources nitrogen in the rice variety INIAP 18; 3) Evaluate response rice to the application of nitrogen in wet and dry soil; and 4) Measure the absorption of nitrogen in rice cultivation. The factors studied were five sources of nitrogen fertilizer, Liquid urea, granular urea, ammonium sulfate, ammonium nitrate and controlled release fertilizer, the second factor consisted forms fertilizer application, broadcast and incorporated and the third factor nitrogen fertilizer applications in moist and dry soil, Design used randomized block factorial arrangement 5 x 2 x 2 compared to an absolute control; agronomic variables were measured and chemical soil and tissues. The conclusions of this study were research They were: 1) The sources of nitrogen fertilizer had virtually like behavior; 2) Application forms and broadcast They were incorporated nitrogenous fertilizer according to similar agronomic characteristics; 3) There was presented differences statistics nitrogen applications in moist and dry soil; 4) The highest nitrogen absorption by the plant gave the ammonium sulphate and broadcast applications with moist soil, 5)
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CULTIVO DE ARROZ, FERTILIZANTES NITROGENADOS, SUELOS