Macías-Duarte, Rubén, Raúl Leonel Grijalva-Contreras, Fabián Robles-Contreras, Fidel Núñez-Ramírez, Víctor Alberto Cárdenas-Salazar, and Cándido Mendóza-Pérez. “SPAD Index, Nitrates, and Sorghum Yield in Response to Nitrogen Supply”. Agronomía Mesoamericana 32, no. 1 (January 1, 2021): 293–305. Accessed December 18, 2024. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/39712.