Efectos de poblaciones y fertilización en tres híbridos de maíz (zea mays l.) en la zona de Babahoyo

VIII. SUMMARRY The present investigation was established on the grounds of the farm "San Pablo", belonging to the Faculty of Agricultural Sciences. Technical University of Babahoyo, located at km 7.5 of the road Babahoyo - Montalvo, Los Rios Province; in the hybrid corns 'Gladiator 688', 'DK 7088' and 'Iniap H - 602' planted at distances of 0.8m x 0.2m and 0.90 x 0.15m between rows and between plants respectively; in the presence of fertilizer levels 180-30 - 80 - 35-20 - 16-18; 140-30 - 70-30 - 15-13 - 12; 100-10 - 50 - 10 - 10 - 11 - 12 and 92 houses - 0 - 60 - 0 - 0 - 0 - 0 kg / ha of NPKSMgZnB; in order to: a) evaluate the agronomic performance of hybrid maize seed to estrangement and fertilization program; b) Determine the spacing of planting and fertilization program; most influential grain yield; and c) Analyze economically and tested subtratamientos treatments. The treatments were constituted by the hybrid corns; subtreatments by combinations planting distances and levels of chemical fertilization. experimental design "split plot" was used in three replications. The main plots corresponded to treatments and experimental subtreatments subplots. The subplot consisted of 4 rows of 6 m in length and 0.8 spaced 0.9m, giving areas of 19.2 and 21.6 m2 respectively. The useful area of experimental subplots, was determined by the two central rows, leaving areas of 9.6m2 and 10.8m2 respectively. The variables were evaluated: male and female flowering; insertion of ear height and plant; number of ears per plant; diameter and length of ears; relationship grain - gopher; 100 gram weight and grain yield. statistical significance test of Tukey to 95% chance for comparisons of treatment means, subtratamientos and interactions was used. Analysis of results and discussion of them, it was concluded: 1 The hybrid 'DK 6788' had the highest grain yield 6.796t / ha, exceeding by 18.09 and 25.64% to hybrids 'Gladiator 688' and 'Iniap H - 602' respectively, differing significantly from each other. 2 Planting distances accompanied by levels of chemical fertilization significantly influenced the characters evaluated. 3 Subtratamientos (E) and (A) planted at 0.9 x 0.8 x 0.2m 0.15my fertilizers 180-30 - 80 - 35-20 - 16 to 18 kg / ha of NPKSMgZnB, achieved the highest grain yields of 7,501 and 7,497 t / ha respectively, without differ significantly. 4 The same subtratamientos (E) and (A) exceeded in 8443 and 85.06% at subtratamientos (H) and (D) the latter fertilized with 92 houses - 0 - 60 kg / ha of NPK respectively. 5 The hybrid 'DK 7088' fertilized with 180-30 - 80 - 35-20 - 16 to 18 kg / ha of NPK and planted 0.9 x 0.15 and 0.8 x 0.2m, obtained the highest grain yields of 8.94 and 8.377 t / ha and in turn the biggest economic profits of $ 1267.21 and $ 1099.8 per hectare, respectively. It is recommended: 1 Using hybrid maize seeds 'DK 7088' in commercial plantings because of its good agronomic performance and grain productive behavior. 2 Use the level of chemical fertilization 180-30 - 80 - 35-20 - 16 to 18 kg / ha of NPKSMgZnB and planting distance 0.9 x 0.15m between rows and between plants respectively, ie 74074 pl / ha for high grain yields and economic returns per hectare; in soils where the trial was established. 3 Investigate hybrids with higher population densities and levels of chemical fertilization as used in this investigation.

• Main Author: Velásquez Alvares, Juan Francisco (author)
• Format: bachelorThesis
• Language: spa
• Published: 2017
• Subjects: Híbridos de maíz; Efectos de poblaciones; Fertilización
• Online Access: http://dspace.utb.edu.ec/handle/49000/3301