Antecedentes y Objetivos: Los bosques tropicales juegan un papel indispensable para enfrentar y reducir la degradación ambiental. El objetivo de este trabajo fue determinar, mediante modelos de simulación de nicho ecológico, la distribución histórica y actual de Cedrela odorata en México.Métodos: Se empleó una base de 1747 datos de presencia de C. odorata. Para la modelación se emplearon 19 variables climato-ambientales y las capas de altitud, orientación, pendiente y tipo de suelos. La modelación de nicho ecológico se realizó en el programa MaxEnt con 75% de la muestra para el entrenamiento y los modelos Logistic, Cumulative, Raw y Cloglog. La validación se realizó con 25% de la muestra y la técnica Crossvalidate.Resultados clave: El empleo de la regresión Cloglog es la que más se apega a la distribución potencial para la especie, caso contrario al emplear la modelación de tipo Raw, ya que la proyección del área potencial es muy restrictiva y compacta, seguido de la regresión Cumulative y la regresión Logistic, siendo estas un punto intermedio para la modelación de la distribución histórica de C. odorata en México.Conclusiones: La distribución histórica obtenida a partir de este modelo mostró que la especie tiene una alta probabilidad de distribuirse en la parte sur de la Península de Yucatán, norte y sur de Chiapas, y la llanura costera del Golfo en el estado de Veracruz con respecto al área actual reportada. Esto sugiere una reducción del nicho ecológico de la especie en el país.

Rice (Oryza sativa L.) is one of the most important crops globally. However, its production faces significant challenges due to climate change, reduced arable land, and increased demand. In this context, the present study conducted a systematic literature review (SLR) on technological advances in rice production in Latin America. Recognized scientific databases were consulted, and rigorous inclusion and exclusion criteria were applied to synthesize current knowledge on the subject. The results show that the main innovations include genetically improving varieties with greater resistance to biotic and abiotic stresses; implementing advanced water management techniques, such as intermittent irrigation; and applying biofertilizers and organic amendments to improve soil fertility. Additionally, precision agriculture tools, such as remote sensing and artificial intelligence-based modeling, have optimized crop monitoring and input efficiency. Brazil, Mexico, and Colombia are the main generators of rice production technologies in the region. Despite the progress made, challenges remain regarding the adoption of these innovations by producers, highlighting the need for comprehensive policies to facilitate technology transfer. This review establishes a foundation for researchers and policymakers interested in the sustainable development of rice production in Latin America.

Weevils (Coleoptera: Curculionidae) are one of the main pests in citrus production systems due to their distribution and way of feeding. The objective of this work was to morphologically identify the species of weevils associated with the cultivation of Persian lime (Citrus latifolia Tanaka) in the citrus zone of the municipality of Huimanguillo, Tabasco, Mexico. The captures of weevils were made directly in the canopy, from September 2019 to February 2021, for a total of 17 collected in three Persian lemon plantations, two with conventional management and one with organic management, each one with useful plots of two hectares (624 plants). A total of 1,039 weevils corresponding to four morphospecies were collected, of which 240 were morphologically identified as Epicaerus sp. (1), 355 as Epicaerus sp. (2), 112 as Exophthalmus opulentus and 332 as Cleistolophus subfasciatus. Los picudos (Coleoptera: Curculionidae) son una de las principales plagas en los sistemas de producción citrícola debido a su distribución y forma de alimentación. El objetivo del presente trabajo fue identificar morfológicamente las especies de picudos asociados al cultivo de limón persa (Citrus latifolia Tanaka) en la zona citrícola del municipio de Huimanguillo, Tabasco, México. Las capturas de picudos se realizaron de manera directa en la copa de los árboles, de septiembre de 2019 a febrero de 2021, para un total de 17 muestreos en tres plantaciones de limón persa, dos con manejo convencional y una con manejo orgánico, cada una con parcelas útiles de dos hectáreas (624 plantas). Se colectaron 1,039 picudos correspondientes a cuatro morfoespecies, de las cuales 240 se identificaron morfológicamente como Epicaerus sp. (1), 355 como Epicaerus sp. (2), 112 como Exophthalmus opulentus y 332 como Cleistolophus subfasciatus.

Rice (Oryza sativa L.) is an essential global crop. In Mexico, per capita consumption has increased in the last decade, but the country still depends on imports to meet domestic demand. Faced with this challenge, genetic improvement and the selection of varieties adapted to local agroclimatic conditions are key strategies to increase productivity. There-fore, the productive performance of 36 rice genotypes was evaluated under tropical rainfed conditions in Tabasco, Mexico. A randomized complete block experimental design with three replications was used, where meteorological and agronomic variables of the rice genotypes were measured. A cluster analysis was also performed to detect differences between groups of genotypes. The results indicated significant differences in plant height, number of grains per panicle and grain yield (P < 0.001). Genotypes with higher yield po-tential were identified, highlighting the Gulf genotypes FL-16 and PCT-MADR-682-2L-2-3-3SR-2P, which showed higher yield and resistance to key diseases such as Pyricularia oryzae, white leaf virus, grain spot and bacterial blast. Cluster analysis detected high phenotypic variability with seven main groups. The findings emphasize the importance of genetic diversification and selection of materials adapted to specific envi-ronmental conditions, contributing to the development of strategies to improve rice pro-duction in Mexico.

Objective: To evaluate and validate the method of compost production by aerated static piles (ASP), in comparison with a traditional method to optimize the composting process. Design/methodology/approach: The static pile system (ASP) was designed and established for compost production at the Huimanguillo Experimental Field (Tabasco, Mexico), where composts of different manures were used in a completely randomized experimental design to evaluate nutritional and quality parameters of the composts to compare with the traditional method. Results: It was found that the ASP method allows obtaining composts with higher nutritive values than those generated by the traditional method. In addition, it satisfies the required quality. Limitations of the study/implications: It is suggested to study more doses of the composts generated by ASP in different crops and stages. Findings/conclusions: The ASP method by injecting more air during the composting process, raises microbial activity, which in turn, raises compost temperatures, achieving higher fixation of nutrient compounds