Abstract

ORTEGA, Oscar Alberto  and  NAJERA, Jeannette Zambrano. Effect of climate change on burley tobacco crop calendars. Rev. Fac. Nac. Agron. Medellín [online]. 2021, vol.74, n.1, pp.9441-9451. ISSN 0304-2847.  https://doi.org/10.15446/rfnam.v74n1.88867.

In Colombia, tobacco crop is an important generator of employment and income for farmers; however it faces different problems as low crop yield compared to other countries; specifically, in the north of the country, where the climatic conditions are less favorable and the productivity is lower than other areas of the country due to the low mechanization. In order to improve the tobacco yield per hectare in the municipality of Ovejas, this research aimed to determine the water requirements of burley tobacco crop under conditions of climatic variability to obtain optimal information for crop calendars. Water requirements of burley tobacco were determined using the crop water requirement equation. This calculation method was programmed in Python to automate the generation of maps, developing a tool that allowed a detailed analysis per unit area per week. Based on the results obtained, weeks 17 and 18 of the year (last week of April and first week of May, respectively) are proposed as optimal planting times, since the cycles of crops planted in this period showed precipitation surplus in the initial phase of cultivation, which is a critical phase for their development. Climate change simulation showed that crops must be continuously monitored in order to adapt to new weather conditions.

Keywords : Agricultural demand modeling; Climate change; Crop calendar; Water balance.

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