Respuesta del cultivo de arroz Oriza sativa L. a cuatro niveles de termofosfato con tres niveles de notrógeno
Fecha
2016
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Facultad de Ciencias Agrarias Universidad de Guayaquil
Resumen
La presente investigación se realizó de Mayo (2016) hasta Octubre
(2016) en el recinto Jigual, cantón Santa Lucia, provincia del Guayas,
ubicada en las coordenadas S 1° 42´54.54” W 79° 59´8.53”y a17 msnm, el
objetivo fue evaluar la respuesta del cultivo de arroz a cuatro niveles de
termofosfato con tres niveles de nitrógeno para mejorar la producción en el
recinto Jigual del cantón Santa Lucia, se empleó el diseño de bloques
completamente al azar con arreglo factorial (4 x 3), se tomaron datos en las
siguientes variables: días a floración, altura de planta (cm), número
panículas, longitud de panícula (cm), número de granos por panícula, ciclo
vegetativo (días), peso de mil semillas (g), rendimientos (kg/ha), y análisis
económico.
De acuerdo a los resultados obtenidos, concluye que: Los
tratamientos que promovieron el inicio de la floración y ciclo vegetativo más
temprano con un promedio de 98 y 128 días respectivamente fueron el
tratamiento 2 (termofosfato 40 kg/ha sin nitrógeno) y el tratamiento 6
(termofosfato 40 kg/ha más nitrógeno 40 kg/ha), el tratamiento 6 de
termofosfato (40 kg/ha) más nitrógeno (40 kg/ha) promovió una mayor altura
de planta con un promedio de 107cm y un mayor rendimiento con un
promedio de 8218.75 kg/ha, el tratamiento 10 de termofosfato en dosis de 40
kg/ha más nitrógeno en dosis de 80 kg/ha produjo el mayor número de
panículas con un promedio de 33 panículas, el tratamiento 11 de
termofosfato (80 kg/ha) más nitrógeno (80 kg/ha) genero la mayor longitud
de la panícula con un promedio de 27 cm y el mayor número de granos por
panícula con un promedio de 184 granos/panículas, los tratamientos 1
(testigo), tratamiento 9 (nitrógeno 80 kg/ha sin termofosfato), tratamiento 10
(termofosfato 40 kg/ha más nitrógeno 80 kg/ha), tratamiento 11 (termofosfato
80 kg/ha más nitrógeno 80 kg/ha) y tratamiento 12 (termofosfato 120 kg/ha
más nitrógeno 80 kg/ha) presentaron el mayor peso de la mil semillas con un
promedio de 30 g.
This research was conducted May (2016) to October (2016) in the enclosure Jigual, Santa Lucia canton, Guayas province, located in the coordinates S 1 42'54.54 "W 79 ° 59'8.53" and a17 m, the objective was to evaluate the response of rice to four levels of thermophosphate with three levels of nitrogen to improve production in the Jigual enclosure canton Santa Lucia, blocks design was used completely randomized factorial (4 x 3) , data were collected on the following variables: days to flowering, plant height (cm), panicle number, panicle length (cm), number of grains per panicle, vegetative cycle (days), weight of thousand seeds (g), yields (kg / ha), and economic analysis. According to the results, it concludes that: Treatments that promoted the beginning of flowering and vegetative cycle earlier with an average of 98 and 128 days were respectively treatment 2 (thermophosphate 40 kg / ha without nitrogen) and treatment 6 (thermophosphate 40 kg / ha more nitrogen 40 kg / ha), treatment 6 thermophosphate (40 kg / ha) more nitrogen (40 kg / ha) promoted greater plant height with an average of 107cm and higher performance with averaging 8218.75 kg / ha, treatment 10 thermophosphate in doses of 40 kg / ha more nitrogen in doses of 80 kg / ha he produced the greatest number of panicles with an average of 33 panicles, treatment 11 thermophosphate (80 kg / ha) plus nitrogen (80 kg / ha) generated most panicle length with an average of 27 cm and the largest number of grains per panicle with an average of 184 grains / panicles, treatments 1 (control), treatment 9 ( nitrogen 80 kg / ha without thermophosphate), treatment-10 (thermophosphate 40 kg / ha more nitrogen 80 kg / ha) treatment 11 (thermophosphate 80 kg / ha more nitrogen 80 kg / ha) and treatment 12 (thermophosphate 120 kg / ha more 80 kg nitrogen / ha) showed the highest weight of thousand seeds with an average of 30 g. According to the results of the economic analysis projected for one hectare of rice crop, the cost of production per hectare was higher than treatment 6 (thermophosphate 40 kg / ha plus nitrogen 40 kg / ha) with 1620
This research was conducted May (2016) to October (2016) in the enclosure Jigual, Santa Lucia canton, Guayas province, located in the coordinates S 1 42'54.54 "W 79 ° 59'8.53" and a17 m, the objective was to evaluate the response of rice to four levels of thermophosphate with three levels of nitrogen to improve production in the Jigual enclosure canton Santa Lucia, blocks design was used completely randomized factorial (4 x 3) , data were collected on the following variables: days to flowering, plant height (cm), panicle number, panicle length (cm), number of grains per panicle, vegetative cycle (days), weight of thousand seeds (g), yields (kg / ha), and economic analysis. According to the results, it concludes that: Treatments that promoted the beginning of flowering and vegetative cycle earlier with an average of 98 and 128 days were respectively treatment 2 (thermophosphate 40 kg / ha without nitrogen) and treatment 6 (thermophosphate 40 kg / ha more nitrogen 40 kg / ha), treatment 6 thermophosphate (40 kg / ha) more nitrogen (40 kg / ha) promoted greater plant height with an average of 107cm and higher performance with averaging 8218.75 kg / ha, treatment 10 thermophosphate in doses of 40 kg / ha more nitrogen in doses of 80 kg / ha he produced the greatest number of panicles with an average of 33 panicles, treatment 11 thermophosphate (80 kg / ha) plus nitrogen (80 kg / ha) generated most panicle length with an average of 27 cm and the largest number of grains per panicle with an average of 184 grains / panicles, treatments 1 (control), treatment 9 ( nitrogen 80 kg / ha without thermophosphate), treatment-10 (thermophosphate 40 kg / ha more nitrogen 80 kg / ha) treatment 11 (thermophosphate 80 kg / ha more nitrogen 80 kg / ha) and treatment 12 (thermophosphate 120 kg / ha more 80 kg nitrogen / ha) showed the highest weight of thousand seeds with an average of 30 g. According to the results of the economic analysis projected for one hectare of rice crop, the cost of production per hectare was higher than treatment 6 (thermophosphate 40 kg / ha plus nitrogen 40 kg / ha) with 1620
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FERTILIZANTE EDAFICA, TERMOFOSFATO, NITROGENADO, NUTRICION, RENDIMIENTO, CULTIVO DE ARROZ