Ciencias Agropecuarias
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Item Etapas fenológicas del maíz (Zea mays L.) VAR. Tusilla bajo las condiciones climáticas del cantón Cumandá, provincia de Chimborazo(2017) Guzmán Buñay, Dennys Alexander; Gutiérrez A., AlbertoThe research work was carried out with the aim of contributing and generating data on the maize (Zea mays L) cultivation cycle, var. Tusillla to program the commercialization and the volumes of water to be applied in each phenological stage, to be divulged to the producers and for educational purposes the experimentation was carried out in the Canton Cumandá, province of Chimborazo, in the sector known as "La Victoria" in The Rosero estate located on the Bucay-Riobamba road with geographical coordinates: Latitude: S 2 ° 20 'and Longitude: W 79 ° 15' at an altitude of 312 meters above sea level. Statistical analysis was applied with means of central tendency (Means, Standard deviation), the results were as follows, for the plant height variable in the final stage of the culture the average was 285.2 cm, for the root depth variable in the Same stage presented an average of 38.9 cm, relating height and radical depth we have 1/5 of the aerial part with the radical depth. In the variable days at harvest, the time from planting to dry harvest was 141 days. This is due to the climatic conditions presented in the experiment especially in relation to the high relative humidity. In the variable coefficient of the maize crop, the values given by FAO56 were taken where the coefficient of cultivation (Kc) for the initial stage is 0.7 with a duration of 21 days, at the development stage the crop coefficient increases, up to To reach its maximum crop coefficient (Kc), which is 1.20, this occurs after 44 days, in the intermediate stage the consumptive use of the plant reaches its highest point the value of Kc 1.20 remains constant for 42 days, in the Final stage the Kc descends until reaching 0.60 with a duration of 34 days. The phenological stages of maize cultivation in the climatic conditions of Cumandá, had these durations for the initial stage 21 days, for the stage of development 44 days, for the intermediate stage or mid season the duration was 42 days and For the final stage or maturing 34 days, which allows us to know when the crop needs more or less water and fertilizers in addition can be scheduled the moment the product is ready to be marketed