Maestría en Nutrición vegetal

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/31989

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    Efecto de la aplicación de dos fertilizantes edáficos y tres fertilizantes foliares sobre la producción y rentabilidad del cultivo de banano (Musa AAA.) en el cantón Baba
    (2023-06) Mendoza Campelo, Carlos Alberto; León Gordón, Olguer Alfredo
    Banana (Musa spp. AAA) cultivation is important in many countries, and its nutrition is essential for optimal production and profitability. This research aimed to evaluate the effect of different soil and foliar fertilizers on the production and profitability of banana cultivation in the Baba canton. Several variables were evaluated, such as the height of the plant, the diameter of the pseudostem, the number of leaves and the weight of the bunch. The results showed that the different fertilizers and bionutrients applied had a positive impact on the banana crop of cv 'Galil 12' Gran dwarf superior (Musa spp. AAA, Cavendish subgroup). In particular, the combination of Fertcampo+Pronter Plus and Fertcampo+Bionutriente increased bunch weight and the number of hands per bunch, while the combination of Fertcampo+Bionutriente, Multifert+Natura Energy and Fertcampo+Natura Energy increased rachis weight. In addition, the interaction between edaphic and foliar fertilizers significantly affected the bunch weight and the rachis weight of the 'Galil 12' Gran enano superior cultivar, which suggests the importance of adequate fertilization to achieve a better yield. All the treatments tested, including the commercial control of the company Inversiones Dalton Valarezo, were profitable because the benefitcost ratio was greater than unity. However, the highest level of profitability was achieved with the use of Multifert + Fronter Plus and Multifert + Natura Energy Plus. In conclusion, this study shows that the proper use of soil and foliar fertilizers can significantly improve the production and profitability of banana cultivation, which may have important implications for the banana industry and for the reduction of environmental problems
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    Evaluación de giberelina y citoquinina en la inducción floral y rendimiento del cultivo de fresa (Fragaria ananassa Duch.) Variedad Albión
    (2022-08) Valle Naranjo, Gustavo Daniel; León Gordón, Olguer Alfredo
    The present work was done at Cevallos Canton, Tungurahua province and the aim was to determine the effect of gibberellin (AG3) and Cytokinin (Kinetin) on flower induction and yield of Fragaria ananassa Duch. cultivar “Albión” because not any studies have been executed in this scenario. During the experimental development in trial for the first flowering cycle the following variables were evaluated; days to flowering and number of flower per plant at the first producing cycle (3 months), also number of fruits per plant, fresh weight of fruits, equadorial and polar diameter, Total Solid Solubles (TSS), dry matter, yield per hectare and Benefic. Cost rate were. When we applied 5.0 mg.L-1 AG3 + 25 mg.L-1 kinetin, the days to flowering were reduced in 12.5%, 13.8% of fresh weight increased respect to control without hormones. When 15 mg.L-1 AG3 + 0.375 mg.L-1 Kinetin were applied flower numbers increased in 20% and number of fruits in 17,4%. The spray of 10 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin increased equadorial diameter in 1.3% and the polar diameter in 2.0 %. After application of 5.0 mg.L-1 AG3 + 0.375 mg.L1 Kinetin dry matter was higher in 1.16 % respect to control. Combined mixtures of 5.0 mg.L-1 AG3 + 0.125 mg.L-1 Kinetin, 10 mg.L-1 AG3 + 0.375 mg.L-1 Kinetin and 15,0 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin, reduced acidity in 0.48% in comparison with the control. For Total Solids Soluble no effect was observed after AG3 and Kinetin in any combination. The most profitable treatment was the application of 5.0 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin, which reach $ 0.37 per invested dollar. The mixture of AG3 and Kinetin using different doses and combinations in F. ananassa, variety Albión, let us an efficient managements of flower induction, increased yield for selecting the best combination of plant hormones to reach higher profitability, aspect of great concern to farmers of strawberry at Cevallos Canton from Tungurahua province. Keywords: GA3, Albión, biostimulant, phytohormone, phytoregulator, bloom, Fragaria, strawberry, gibberellin, kinetin.
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    Evaluación de la extracción de n, p y k en el cultivo de Brócoli Var. Avenger
    (2021-04) Escobar, Edgar Hernán; León Gordón, Olguer Alfredo
    The increase in the consumption of broccoli Brassica oleracea worldwide, for Ecuador in recent years represents a crop of great economic importance. The lack of studies in the country on the requirements demanded by the crop for correct fertilization significantly affects the productivity and quality of broccoli. The objective of this study was to identify the level of N, P and K extraction in the broccoli Brassica oleraca var. Avenger. It was developed in the parish of Mulaló, in the province of Cotopaxi. The research was developed in an open field crop, under a quantitative approach in a non-experimental type of research at a descriptive level. The methodology for the extraction levels and obtaining N, P and K extraction curves, a cultivation area of 2 ha was established, with a sowing density of 55,000 plants ha-1, for the analysis 12 elite plants were selected At 35, 56, 75 and 95 dat, they were sent to the laboratory for analysis, the extraction results of the main macronutrients demanded by the plant were N 348.6 kg ha-1, P 61.7 kg ha-1, and K 295.2 kg ha-1, and the mathematical models of each nutrient were determined with a confidence level for N of 0.95, P of 0.96 and K of 1.0. It is recommended to consider that at 75 dat the accumulated extraction level of 251.8 kg ha-1 of K and 213.2 kg ha-1 of N influences the formation and development of the pellet.