Resumo

ESPINOSA-ESPINOSA, José L. et al. Factors that affect agricultural production under irrigation conditions: How to measure and study their effect. Tecnol. cienc. agua [online]. 2018, vol.9, n.2, pp.175-191.  Epub 24-Nov-2020. ISSN 2007-2422.  https://doi.org/10.24850/j-tyca-2018-02-07.

Several groups of factors affect the yield of agricultural crops under irrigation, including meteorological conditions, the management of crops and land, and those related to the soil’s spatial variability. The first group of factors can seriously affect crop yields and little can be done to lessen their effect. Management factors depend largely on decisions made by producers and available cultivation methods. The third group depends on the soil’s spatial variability, which has a notable negative effect on crop yield in general, but mainly in the case of producers who rent several plots that have been cultivated by other producers, which vary due to the soil’s physical conditions and the management practices used by former producers. In irrigation district “Río Mayo” in the state of Sonora, crops have been monitored for several years using remote satellite sensors, and it has been possible to measure the effects of these factors and generate recommendations to reduce the negative impacts on yields. The objective of this work is to show the results obtained and the way of making them known to the producers through available Internet viewers.

Palavras-chave : Precision agriculture; evapotranspiration; vegetation indices; remote sensing; spatial variability.