Ciencias Agropecuarias

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Author: search.filters.author.Romero Larrea, Carlos AníbalSubject: search.filters.subject.AGRONOMÍA

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    Uso de fertilización foliar con sulfato de zinc en variedades de Solanum tuberosum L. para incrementar el contenido de zinc en sus tubérculos
    (2024-05) Romero Larrea, Carlos Aníbal; Dobronski Arcos, Jorge Enrique
    In Ecuador, there is a significant deficiency of zinc in the population's diet. One of the strategies to improve the bioavailability of this trace element is the potatoes biofortification. The experimental part of the study was carried out at the Querochaca Campus of the Faculty of Agricultural Sciences of the Technical University of Ambato, located in Cevallos canton. The research used a factorial design (A*B*C), made up of 3 factors: (A) Potato varieties (INIAP-Fripapa and Chaucha roja), (B) Number of applications in foliar fertilization (0, 1, 2 and 3) and Form of foliar application (Manual spray pump and motor spray pump), with a total of 16 treatments and three replicates. In the experiment, the plots of each treatment were 21.6 m2 , in which 30 potato seeds were sown. During data processing, the Statgraphics Centurión XVI statistician was used to find the Analysis of Variance and the Mean Comparison Tests, using Tukey (5%). The results of the research determined T16 (Chaucha roja potato - 3 applications of Zinc sulfate - Motor) as the best treatment, obtaining an increase of 19.4 mg Zn/kg potato bs. (112.14%) with regard to the control treatment. On the other hand, the maximum increase achieved in INIAP-Fripapa was in treatment T8 (INIAP-Fripapa- 3 applications of Zinc sulfate- Motor), with an increase of 5.7 mg Zn/kg potato bs. (30%) respecting to the control. To conclude, the fertilizations that were carried out with Zinc Sulfate during the cultivation of the two potato varieties resulted in an increase in zinc in the tubers, without negatively affecting the weight of harvested tubers/plant, or the yield of tubers/ha.
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    Rendimiento de semilla pre básica de papa (Solanum tuberosum) variedad chaucha roja, proveniente del sistema de producción aeropónico
    (2019-11) Romero Larrea, Carlos Aníbal; Gutiérrez Albán, Alberto
    Considering the importance of fertilizers in the cultivation of potatoes in the field, this research work aims to evaluate the performance of pre-basic seed potato red “chaucha” variety from the aeroponic production system, with the application of three edaphic fertilizers, to reason of different doses. The study was carried out in the Querochaca experimental teaching farm owned by the Faculty of Agricultural Sciences of the Technical University of Ambato, located in Cevallos canton, Tungurahua province, Ecuador; at an altitude of 2865 masl, geographic coordinates 01 ° 22 '02' 'of South Latitude and 78 ° 36' 20 'of West Longitude. In the research, a randomized block design with six treatments (Different proportions of edaphic fertilizers) and triplicate was used. The size of the plot of each replica and of each treatment was 21.6 m2 (5.4 m x 4 m), with five rows of seeding separated by 0.9 m of each furrow. Seed 25 seeds of potatoes in each plot of each replica, placed at 0.5 m of each seed and distributed 5 seeds for each furrow. During the processing of the data the statistical program, STATGRAPHICS Centurion XVI.I was used in the Analysis of Variance and in the Tests of Comparison of Means by Tukey (5%). The result of the investigation determined the best treatment for T4, which used the following fertilizers: 350 kg of sowing Plus at sowing, 175 kg of Engrose Plus 45 days after sowing and 175 kg of Ferti special Plus at 70 days of the sowing; producing a yield of 9.68 ± 0.47 tons of potato / ha at 137 days of cultivation. The Internal Control Index in the tubers obtained gives us values similar to those of a registered potato seed, that is, the T4 Treatment tubers are of good quality to be used as seed for cultivation. In conclusion, the performance in the cultivation of red “chaucha” potato is low in comparison with other potato varieties, but this low value is compensated by the good acceptance of the potato in the markets and the higher price in relation to the improved potatoes.