{"query_echo":{"q":"","filters":{"geography":["Western Pampas"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'Western Pampas' for facet 'geography' is not in the controlled vocabulary."}]},"total":{"value":1,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?geography=Western+Pampas","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"iai-000002","url":"https://climateinsightsdirectory.org/document/iai-000002","title":"Interactive effects of water table depth, rainfall variation and sowing date on maize production in the Western Pampas","publisher":{"name":"Inter-American Institute for Global Change Research","organization":"inter-american-institute-for-global-change-research"},"document_type":"research paper","language":"en","date_published":"2025-01-16","source_url":"https://iai.int/es/pub_acad/interactive-effects-of-water-table-depth-rainfall-variation-and-sowing-date-on-maize-production-in-the-western-pampas/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","analysis_type"],"summary":{"text":"The study identifies an optimum water-table depth of 1.5–2.5 m for maize production in the Western Pampas, where yields are highest and most stable regardless of rainfall or sowing date. Water-tables shallower than this range cause yield declines due to waterlogging, while deeper water-tables lead to significant yield reductions, particularly for early-sown maize during dry seasons, as these crops rely more heavily on groundwater supply.","ai_generated":true,"unit":"iai-000002#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Maize yields in the Western Pampas are highest and most stable, averaging approximately 11.6 Mg ha-1, when the water-table depth is between 1.5 and 2.5 m, regardless of whether the growing season was dry or wet or if the crop was sown early or late.","ai_generated":true,"unit":"iai-000002#insight-1","date_modified":"2026-10-23"},{"text":"Water-tables shallower than 1.5 m lead to yield declines across all evaluated conditions due to the negative effects of waterlogging, which is also reflected in the Crop Water Stress Index.","ai_generated":true,"unit":"iai-000002#insight-2","date_modified":"2026-10-23"},{"text":"Water-tables deeper than 4 m significantly reduce yields to between 25% and 50% of those found in optimum depth areas; these declines are most pronounced for early-sown maize during dry seasons, indicating a higher dependence on groundwater.","ai_generated":true,"unit":"iai-000002#insight-3","date_modified":"2026-10-23"},{"text":"Rainfall during the flowering period strongly impacts maize yields in areas with deep water-tables, whereas yields in areas with optimum water-table depth remain stable and independent of rainfall during that period.","ai_generated":true,"unit":"iai-000002#insight-4","date_modified":"2026-10-23"}],"climate_tags":[],"geography_discussed":[],"frame_perspective":[],"analysis_type":["empirical research"]}]}