Productividad de la variedad de maíz Advanta 9789 en diferentes densidades con manejo convencional en la Joya de los Sachas.

Abstract

The objective of this research was to evaluate corn production in five planting densities by conventional management using the Advanta 9789 variety, in Joya de los Sachas canton. This experimental work was carried out in La Florida community (9,965.7 km) belonging to Joya de los Sachas parish, the temperature varies between 22 degrees Celsius and 34 degrees Celsius annually, rainfall is 3,122.7 mm annually, in this case an analysis of variance and a statistical analysis where the data were analyzed in the statistical program SAS v. 9.4 (SAS Institute Inc., Cary, NC, USA), following a linear mixed model where it considered as fixed effects the treatments (Control, T1, T2, T3, T4 and T5), Period (1-5) as well as their interaction Trat × P, while as random effects were stated the block and residual error. As results it was obtained that treatment T4 (66,625 seeds/ha) had a lower plant height (2. 5 ± 0.05 m) compared to the other sowing densities; regarding yield, the T5 treatment (72,750 seeds/ha) showed a higher yield tan the other treatments; in the ear length, in spite of the numerical variations observed between treatments, no significant differences were detected; as well as in the ear diameter, no statistical differences were detected; finally, the ear weight considered in our study showed highly significant differences when we compared the different treatments. It is concluded that with respect to the objectives set, T5 treatment (53.37 seeds/ha) was the first that showed the highest yield compared to the other treatments, the pests and diseases of corn in all treatments showed incidence of (Spodoptera frugiperda), so it is recommended to use the variety under study.