Evaluación agronómica de tres líneas finalizadas de arroz (Oryza sativa) bajo diferentes dosis de fertilización, en la zona de Babahoyo

VIII. SUMMARY This research was conducted on the grounds of the Experimental Farm "San Pablo" of the Faculty of Agricultural Sciences at the Technical University of Babahoyo, located at Km. 7.5 of Babahoyo Montalvo way, with geographic coordinates 79º 32 'west longitude and south latitude 49' 1. The area has a humid tropical climate, with a height of 8 m.s.n.m., an average annual rainfall of 2329 mm, relative humidity of 82% and an average annual temperature of 25,5ºC. As planting material completed three lines of rice from Colombia and variety of local rice INIAP 14. The finished lines were provided by the company INTEROC CUSTER S.A. were used, and their codes are: 220, 780 and 307. The treatments were doses of N (140-120-80 kg / ha) + P (40-30-20 kg / ha) + K (90-70-50 kg / ha), interaccionadas with subtratamientos that were completed lines (220-780-307) and local variety (INIAP 14). the experimental split plot design with 3 treatments, 4 subtratamientos and 3 replications. Tukey 95% probability was used for the evaluation and comparison of treatment means,. For this test all the work and agricultural practices that were necessary for the normal development of the crop, such as soil testing, land preparation, planting, weed control, phytosanitary control, fertilization, irrigation and harvesting were conducted. To estimate correctly the effects of treatments and subtratamientos, data days to flowering and physiological maturation of grain, plant height at harvest, number of tillers and panicles / m2, panicle length, number of grains were evaluated by panicle, thousand grain weight, grain ratio - straw, crop yield and economic analysis. By the above results it was determined that the treatment applied 140-40-90 kg / ha of N-P-K on line 780 recorded longer flowering and maturing; the highest plant height was obtained in the application of 140-40-90 kg / ha of N-P-K with the line 780 and INIAP 14; in tillers and panicle / m2, the use of 80-20-50 kg / ha N-P-K using the variety INIAP 14 reported the highest averages; most panicle length was achieved with high dose (140-40-90 kg / ha of N-P-K) on line 780; grains and filled openings were presented in larger quantities using 140-40-90 kg / ha of N-P-K lines 307 and 780, respectively; Applying 140-40-90 kg / ha of N-P-K with the line 780 higher 1000 grain weight was reached; the highest ratio grain - straw was recorded using 140-40-90 kg / ha of NPK with the variety INIAP 14 and the highest performance and economic analysis was obtained with the application of 140-40-90 kg / ha of NPK with the line 220 with $ 652.42.

• 1. autor: López Mosquera, Gladys Margarita (author)
• Format: bachelorThesis
• Język: spa
• Wydane: 2016
• Hasła przedmiotowe: Arroz; Dosis de fertilización
• Dostęp online: http://dspace.utb.edu.ec/handle/49000/3258