The use of herbicides plays a vital role in controlling weeds and conserving crops; however, its usage generates both environmental economic problems. For example, pose financial issue as farmers must apply large quantities to protect crops due absorption rates less than 0.1%. Therefore, there is great need for the development new methods mitigate these issues. Here, we report first time synthesis poly(lactic-co-glycolic-acid) (PLGA) nanoherbicides loaded with atrazine an active ingredient....

There is great contemporary interest in using cleaner technologies through green chemistry and utilizing biopolymers as raw material. Pectin found on plant cell walls, it commonly extracted from fruit shells, mostly apples or citrus fruits. has applications many areas of commercial relevance; for this reason, possible to find available information about novel methods transform pectin pursuing enhanced features, with the structuring biopolymer microspheres being highly cited enhance its...

Nanoparticles are able to interact with biomolecules, creating functional nanosystems for transportation within in vivo cells, and leading the study of their potential applications field plant biotechnology. Therefore, aim this research was determine growth rooting effect functionalized (SWCNTs-COOH) non-functionalized nanoparticles iron residue inner particles (SWCNTs-Fe) blackberry (Rubus adenotrichos) vitro plants. Two types SWCNTs were used, both them characterized a solid sample through...

Trichoderma is one of the most widely used microorganisms in biological control plant pathogens. The techniques for its formulation are well known and commercially distributed both solid liquid presentations based on formulations reproductive structures. Currently, agricultural systems integrate this type fungus as an alternative sustainable production, even though traditional still has important limitations, it a high potential to be combined with new technologies development innovation...

Blackberries are fruits produced worldwide, with 25 % of their production centered in Mexico, Central and South America. Tropical highland blackberry is a fruit that can potentially enhance human health, due to high content phenolic compounds, which include anthocyanins, acids, tannins (gallotannins elagitannins) flavonoids. Therefore, the overall aim this study development callus induction protocol, establishment cell suspensions (Rubus adenotrichos Schltdl.) analysis through optical...

Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), or the fall armyworm, is a voracious, polyphagous insect that forms large populations and has high spread rate. This species considered an extremely dangerous plague; one of most destructive in American continent. One main insects, found Costa Rica damages fig crops S. frugiperda. research was aimed to develop prediction larval-stage model determine effectiveness Apanteles sp. as parasitoid. Both organisms were collected...

The worldwide outbreak of the SARS-CoV-2 virus led to a shortage hospital ventilators worldwide. During recovery, these devices were crucial for patients in Intensive Care Units (ICUs). However, countries like Costa Rica faced difficulties acquiring due high demand world. To address this issue, professionals and students from Institute Technology have developed prototype mechanical ventilator. This ventilator incorporates PIDs Fuzzy Logic algorithms features user-friendly graphic interface...

RNAi technology is a versatile, effective, safe, and eco-friendly alternative for crop protection. There plenty of evidence its use through Host-induced gene silencing (HIGS) spray-induced (SIGS) techniques to control viruses, bacteria, fungi, insects, nematodes. As SIGS, most significant challenge achieving stability avoiding premature degradation in the environment or during absorption target organism. One encapsulation liposomes, virus-like particles, polyplex nanoparticles, bio-clay,...

RNAi technology is a versatile, effective, safe, and eco-friendly alternative for crop protection. There plenty of evidence its use through host-induced gene silencing (HIGS) spray-induced (SIGS) techniques to control viruses, bacteria, fungi, insects, nematodes. For SIGS, most significant challenge achieving stability avoiding premature degradation in the environment or during absorption by target organism. One encapsulation liposomes, virus-like particles, polyplex nanoparticles, bioclay,...

Se presentan los resultados de una investigación cuyo objetivo fue evaluar el efecto tres concentraciones Ácido Indolbutírico (AIB) sobre enraizamiento in vitro la mora “vino sin espinas”. utilizó un sistema inmersión temporal automatizado para determinar sobrevivencia las plántulas durante aclimatación. empleó medio cultivo líquido MS con sales al 50%, sacarosa 3% y pH 5.7, suplementado 0.125 (T1), 0.250 (T2) 0.500 (T3=control) mg/L AIB. En cada recipiente se colocaron 200ml 15 explantes,...

Este ensayo se llevó a cabo en el CeCentro de Investigación Biotecnología, del Instituto Tecnológico Costa RiRica, CaCartago, entre los años 2006-2008. Tuvo como objetivo evaluar cultivo in vitro higo. Para establecimieiento materiaial vegetal utilizaron minieiestacas 3 cm, longitud provenieientes propapagado vegetativamente. su desinfección lavaron y sumergieieron una solución 6 g/l benomilo (50 % i.a.), sulfato gentamicina (2 i.a.) clorhidrato oxitetraciclina (6 3,5 dimetiltiocarbamato (76...

Micellar microemulsions are thermodynamically stable self-emulsifying systems that have been used to successfully improve the low oral bioavailability of several bioactive phytochemicals, such as antioxidant polyphenols. However, most studies reported micellization single-compounds or purified chemical fractions; thus, stability, phytochemical-loading efficiency, and bioactivity complex crude extracts remain largely unexplored. In this study, we evaluated effects micellar emulsification...

RESUMEN El membrillo (Cydonia oblonga) es un frutal no tradicional en Costa Rica que presenta propiedades médicas y nutricionales, sin embargo la lentitud del crecimiento enraizamiento dificulta obtener poblaciones homogéneas mediante técnicas convencionales. Es por esta razón investigación tuvo como objetivo producción de material vegetal uniforme tiempos reducidos empleando sistemas inmersión temporal (RITA ®). Se utilizó referencia medio semisólido MS, suplementado con 0,1 mg L-1 ANA; 0,3...

<p class="p1">El tomate de árbol (<em>Cyphomandra betacea</em>) es un frutal importancia comercial en países como Bolivia, Colombia, Ecuador y Perú, donde se consume fruta fresca procesada. Tradicionalmente, propagado por semillas estacas, enfrenta problemas heterogeneidad calidad material siembra. </p><p class="p1">En esta investigación desarroll<em>ó </em>un protocolo para la micropropagación <em>in vitro </em>del criollo del fenotipo...

Over the last decade, high-end fruits such as berries, have faced impact of Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) across Asia, Europe, and Americas. Yet, none countries from Central America has officially reported this pest. We carried out surveys in blackberry fields Costa Rica. placed a proprietary mixture liquid attractants into red-cup traps with lateral holes, it been widely demonstrated best to capture D. suzukii. Subsequently, we collected both adults larvae...

Abstract Sweet potato ( Ipomoea batatas ) is a crucial crop for food security and economic stability in many regions, including Costa Rica. This study aimed to assess the prevalence genetic diversity of two major viruses associated with sweet virus disease (SPVD) Rica: feathery mottle (SPFMV) chlorotic stunt (SPCSV). A total 50 leaf samples displaying typical viral symptoms were collected from potato‐growing regions. Using multiplex reverse transcription (RT)‐PCR, SPFMV was detected 82%...

The COVID-19 pandemic caused by the SARS-CoV-2 virus placed global health systems in crisis due to shortage of materials, devices, and emergency ventilation equipment for Intensive Care Units (ICU). Low-cost ventilator designs emerged as a necessary option many countries seeking ameliorate impact demands respiratory equipment. At Costa Rica Institute Technology (ITCR), prototype mechanical (TEC-Ventilator) was developed with following features: capability achieve tidal volume 250 800 mL...

El presente estudio se enfocó en investigar la presencia del virus acucharamiento de hoja tomate (TYLCV) plantas el cantón Sarchí, Costa Rica. Se recolectaron muestras con síntomas enfermedad, así como una muestra sin síntomas, y realizaron análisis moleculares microscópicos para detectar caracterizar virus. demostró TYLCV las analizadas mediante PCR, comparando otras secuencias un BLAST árbol filogenético. Además, observaron diferencias gravedad los entre expuestas al sol a sombra. En por...

Berry fruits are an important source of polyphenols with beneficial antioxidant properties for human health. However, higher bioactive phytochemical content has been reported in berry leaves, which usually discarded or underutilized. In this study, a hydroalcoholic extract relevant polyphenol obtained from strawberry leaves (Fragaria x ananassa cv. Festival), agro-industrial waste material, was incorporated two commercial topical formulations (aqueous gel and oil/water cream), three...

RNAi technology is a versatile, effective, safe, and eco-friendly alternative for crop protection. There plenty of evidence its use through Host-induced gene silencing (HIGS) spray-induced (SIGS) techniques to control viruses, bacteria, fungi, insects, nematodes. As SIGS, most significant challenge achieving stability avoiding premature degradation in the environment or during absorption target organism. One encapsulation liposomes, virus-like particles, polyplex nanoparticles, bio-clay,...