In addition to the customized advice for the irrigator, the SIAR has on its web page an application on line that allows the user to make a simplified balance of mineral fertilization (N-P-K) for the most important crops of CLM, in consideration of the legal rules of application of fertilization.
Controlled Deficit Irrigation (CDI) (English, 1990; English et al, 1990) can be an efficient research tool for saving water without causing any significant losses in terms of the quality and quantity of the final crop yield. This technique enables an understanding of the drought stress which takes place in a plant at a given phenological stage as it relates to potential decreases in the ultimate yield and quality of the harvest. The aim is to find at which phenological stages the irrigation water supply can be decreased and the extent to which this can be done, by examining the consequences brought about by this course of action (Jordan, 1983).
The completion of this technique in a semi-arid climate region with a shortage of water resources, such as CLM, is of great importance. For this reason, the ITAP, sometimes in collaboration with CREA, and El Chaparrillo are being made numerous tests with the main crops of the region (Table 17).
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