TY - JOUR AU - Barahona-Amores, Luis Alberto AU - Villarreal-Núñez, José Ezequiel AU - González-Carrasco, Walker AU - Quiro-Mclntire, Evelyn Itzel PY - 2019/05/01 Y2 - 2024/03/29 TI - Absorption of nutrients in rice in an inceptisol soil under irrigation in Coclé, Panamá JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 30 IS - 2 SE - Articles DO - 10.15517/am.v30i2.33997 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/33997 SP - 407-424 AB - <p><strong>Introduction. </strong>Nutrients content in rice (<em>Oryza sativa</em>) plant during its different phenological stages is affected by nutrients content in soil, dose and fertilizers source, varieties, and implemented cropping systems. <strong>Objective. </strong>The objective of this research was to determine the extraction of macro and micro nutrients from two rice varieties in each phenological stage, in an Inceptisol soil under irrigated conditions. <strong>Materials and methods. </strong>The study was developed in Penonome, Cocle, Panama in the 2015 and 2016 agricultural cycles. The IDIAP FL 106-11 and IDIAP FL 137-11 varieties were used. Plants samples were taken every fifteen days since germination with four repetitions&nbsp;using a frame of 0.25 m X 0.25 m. A regression analysis was performed to determine the nutrients extraction per crop stage. <strong>Results. </strong>IDIAP FL 106-11 variety yielded 31.7 t.ha-1 of dry matter and the IDIAP FL 137-11 about 26.9 t.ha-1; grain yield was similar with 5.5 t.ha-1 and 5.3 t.ha-1, respectively. There were significant differences about nutrients extraction between the different phenological stages in both varieties (p&lt;0.001). IDIAP FL 106-11 extracts more N, K, Mn, Zn, and Cu than IDIAP FL 137-11, which absorbed more P, Ca, Mg, and Fe. Nutrients importance order, based on extracted quantity, was K&gt;N&gt;Ca&gt;P&gt;Mg&gt;Mn&gt;Fe&gt;Zn&gt;Cu. In a study conditions, IDIAP FL 106-11 requires greater amounts of nutrients to produce a ton of grain than IDIAP FL 137-11. <strong>Conclusion. </strong>Each variety presented nutrient different absorption implying an adjustment in the fertilization plans that are currently handled.&nbsp;</p> ER -